projects/dwt2: org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/Text.d comparison

comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/Text.d @ 0:6dd524f61e62

add dwt win and basic java stuff

author	Frank Benoit <benoit@tionex.de>
date	Mon, 02 Mar 2009 14:44:16 +0100
parents
children	2e09b0e6857a

comparison

equal deleted inserted replaced

--1:000000000000
+:6dd524f61e62
+/*******************************************************************************
+* Copyright (c) 2000, 2008 IBM Corporation and others.
+* All rights reserved. This program and the accompanying materials
+* are made available under the terms of the Eclipse Public License v1.0
+* which accompanies this distribution, and is available at
+* http://www.eclipse.org/legal/epl-v10.html
+*
+* Contributors:
+*     IBM Corporation - initial API and implementation
+* Port to the D programming language:
+*     Frank Benoit <benoit@tionex.de>
+*******************************************************************************/
+module org.eclipse.swt.widgets.Text;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.events.VerifyListener;
+import org.eclipse.swt.graphics.Font;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.internal.win32.OS;
+import org.eclipse.swt.widgets.Scrollable;
+import org.eclipse.swt.widgets.TypedListener;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Control;
+import java.lang.all;
+/**
+* Instances of this class are selectable user interface
+* objects that allow the user to enter and modify text.
+* Text controls can be either single or multi-line.
+* When a text control is created with a border, the
+* operating system includes a platform specific inset
+* around the contents of the control.  When created
+* without a border, an effort is made to remove the
+* inset such that the preferred size of the control
+* is the same size as the contents.
+* <p>
+* <dl>
+* <dt><b>Styles:</b></dt>
+* <dd>CANCEL, CENTER, LEFT, MULTI, PASSWORD, SEARCH, SINGLE, RIGHT, READ_ONLY, WRAP</dd>
+* <dt><b>Events:</b></dt>
+* <dd>DefaultSelection, Modify, Verify</dd>
+* </dl>
+* <p>
+* Note: Only one of the styles MULTI and SINGLE may be specified,
+* and only one of the styles LEFT, CENTER, and RIGHT may be specified.
+* </p><p>
+* IMPORTANT: This class is <em>not</em> intended to be subclassed.
+* </p>
+*
+* @see <a href="http://www.eclipse.org/swt/snippets/#text">Text snippets</a>
+* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
+* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+*/
+public class Text : Scrollable {
+alias Scrollable.computeSize computeSize;
+alias Scrollable.dragDetect dragDetect;
+alias Scrollable.sendKeyEvent sendKeyEvent;
+alias Scrollable.setBounds setBounds;
+int tabs, oldStart, oldEnd;
+bool doubleClick, ignoreModify, ignoreVerify, ignoreCharacter;
+String message;
+/**
+* The maximum number of characters that can be entered
+* into a text widget.
+* <p>
+* Note that this value is platform dependent, based upon
+* the native widget implementation.
+* </p>
+*/
+private static int LIMIT_;
+public static int LIMIT(){
+assert( static_this_completed );
+return LIMIT_;
+}
+/**
+* The delimiter used by multi-line text widgets.  When text
+* is queried and from the widget, it will be delimited using
+* this delimiter.
+*/
+public static const String DELIMITER = "\r\n";
+/*
+* This code is intentionally commented.
+*/
+//  static final char PASSWORD;
+/*
+* These values can be different on different platforms.
+* Therefore they are not initialized in the declaration
+* to stop the compiler from inlining.
+*/
+private static /+const+/ WNDPROC EditProc;
+static const TCHAR[] EditClass = "EDIT\0";
+private static bool static_this_completed = false;
+private static void static_this() {
+if( static_this_completed ){
+return;
+}
+synchronized {
+if( static_this_completed ){
+return;
+}
+LIMIT_ = OS.IsWinNT ? 0x7FFFFFFF : 0x7FFF;
+WNDCLASS lpWndClass;
+OS.GetClassInfo (null, EditClass.ptr, &lpWndClass);
+EditProc = lpWndClass.lpfnWndProc;
+/*
+* This code is intentionally commented.
+*/
+//      int hwndText = OS.CreateWindowEx (0,
+//          EditClass,
+//          null,
+//          OS.WS_OVERLAPPED | OS.ES_PASSWORD,
+//          0, 0, 0, 0,
+//          0,
+//          0,
+//          OS.GetModuleHandle (null),
+//          null);
+//      char echo = (char) OS.SendMessage (hwndText, OS.EM_GETPASSWORDCHAR, 0, 0);
+//      OS.DestroyWindow (hwndText);
+//      PASSWORD = echo !is 0 ? echo : '*';
+static_this_completed = true;
+}
+}
+/**
+* Constructs a new instance of this class given its parent
+* and a style value describing its behavior and appearance.
+* <p>
+* The style value is either one of the style constants defined in
+* class <code>SWT</code> which is applicable to instances of this
+* class, or must be built by <em>bitwise OR</em>'ing together
+* (that is, using the <code>int</code> "|" operator) two or more
+* of those <code>SWT</code> style constants. The class description
+* lists the style constants that are applicable to the class.
+* Style bits are also inherited from superclasses.
+* </p>
+*
+* @param parent a composite control which will be the parent of the new instance (cannot be null)
+* @param style the style of control to construct
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+*    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+* </ul>
+*
+* @see SWT#SINGLE
+* @see SWT#MULTI
+* @see SWT#READ_ONLY
+* @see SWT#WRAP
+* @see Widget#checkSubclass
+* @see Widget#getStyle
+*/
+public this (Composite parent, int style) {
+static_this();
+super (parent, checkStyle (style));
+}
+override int callWindowProc (HWND hwnd, int msg, int wParam, int lParam) {
+if (handle is null) return 0;
+bool redraw = false;
+switch (msg) {
+case OS.WM_ERASEBKGND: {
+if (findImageControl () !is null) return 0;
+break;
+}
+case OS.WM_HSCROLL:
+case OS.WM_VSCROLL: {
+redraw = findImageControl () !is null && drawCount is 0 && OS.IsWindowVisible (handle);
+if (redraw) OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
+break;
+}
+case OS.WM_PAINT: {
+if (findImageControl () !is null) {
+PAINTSTRUCT ps;
+auto paintDC = OS.BeginPaint (handle, &ps);
+int width = ps.rcPaint.right - ps.rcPaint.left;
+int height = ps.rcPaint.bottom - ps.rcPaint.top;
+if (width !is 0 && height !is 0) {
+auto hDC = OS.CreateCompatibleDC (paintDC);
+POINT lpPoint1, lpPoint2;
+OS.SetWindowOrgEx (hDC, ps.rcPaint.left, ps.rcPaint.top, &lpPoint1);
+OS.SetBrushOrgEx (hDC, ps.rcPaint.left, ps.rcPaint.top, &lpPoint2);
+auto hBitmap = OS.CreateCompatibleBitmap (paintDC, width, height);
+auto hOldBitmap = OS.SelectObject (hDC, hBitmap);
+RECT rect;
+OS.SetRect (&rect, ps.rcPaint.left, ps.rcPaint.top, ps.rcPaint.right, ps.rcPaint.bottom);
+drawBackground (hDC, &rect);
+OS.CallWindowProc ( EditProc, hwnd, OS.WM_PAINT, cast(int)hDC, lParam);
+OS.SetWindowOrgEx (hDC, lpPoint1.x, lpPoint1.y, null);
+OS.SetBrushOrgEx (hDC, lpPoint2.x, lpPoint2.y, null);
+OS.BitBlt (paintDC, ps.rcPaint.left, ps.rcPaint.top, width, height, hDC, 0, 0, OS.SRCCOPY);
+OS.SelectObject (hDC, hOldBitmap);
+OS.DeleteObject (hBitmap);
+OS.DeleteObject (hDC);
+}
+OS.EndPaint (handle, &ps);
+return 0;
+}
+break;
+}
+default:
+}
+int /*long*/ code = OS.CallWindowProc (EditProc, hwnd, msg, wParam, lParam);
+switch (msg) {
+case OS.WM_HSCROLL:
+case OS.WM_VSCROLL: {
+if (redraw) {
+OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
+OS.InvalidateRect (handle, null, true);
+}
+break;
+}
+default:
+}
+return code;
+}
+override void createHandle () {
+super.createHandle ();
+OS.SendMessage (handle, OS.EM_LIMITTEXT, 0, 0);
+if ((style & SWT.READ_ONLY) !is 0) {
+if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) is 0) {
+state |= THEME_BACKGROUND;
+}
+}
+}
+/**
+* Adds the listener to the collection of listeners who will
+* be notified when the receiver's text is modified, by sending
+* it one of the messages defined in the <code>ModifyListener</code>
+* interface.
+*
+* @param listener the listener which should be notified
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see ModifyListener
+* @see #removeModifyListener
+*/
+public void addModifyListener (ModifyListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+TypedListener typedListener = new TypedListener (listener);
+addListener (SWT.Modify, typedListener);
+}
+/**
+* Adds the listener to the collection of listeners who will
+* be notified when the control is selected by the user, by sending
+* it one of the messages defined in the <code>SelectionListener</code>
+* interface.
+* <p>
+* <code>widgetSelected</code> is not called for texts.
+* <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text,
+* or when ENTER is pressed in a search text. If the receiver has the <code>SWT.SEARCH | SWT.CANCEL</code> style
+* and the user cancels the search, the event object detail field contains the value <code>SWT.CANCEL</code>.
+* </p>
+*
+* @param listener the listener which should be notified when the control is selected by the user
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see SelectionListener
+* @see #removeSelectionListener
+* @see SelectionEvent
+*/
+public void addSelectionListener (SelectionListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+TypedListener typedListener = new TypedListener (listener);
+addListener (SWT.Selection,typedListener);
+addListener (SWT.DefaultSelection,typedListener);
+}
+/**
+* Adds the listener to the collection of listeners who will
+* be notified when the receiver's text is verified, by sending
+* it one of the messages defined in the <code>VerifyListener</code>
+* interface.
+*
+* @param listener the listener which should be notified
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see VerifyListener
+* @see #removeVerifyListener
+*/
+public void addVerifyListener (VerifyListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+TypedListener typedListener = new TypedListener (listener);
+addListener (SWT.Verify, typedListener);
+}
+/**
+* Appends a string.
+* <p>
+* The new text is appended to the text at
+* the end of the widget.
+* </p>
+*
+* @param string the string to be appended
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void append (String string) {
+checkWidget ();
+// SWT extension: allow null string
+//if (string is null) error (SWT.ERROR_NULL_ARGUMENT);
+string = Display.withCrLf (string);
+int length = OS.GetWindowTextLength (handle);
+if (hooks (SWT.Verify) || filters (SWT.Verify)) {
+string = verifyText (string, length, length, null);
+if (string is null) return;
+}
+OS.SendMessage (handle, OS.EM_SETSEL, length, length);
+TCHAR* buffer = StrToTCHARz (getCodePage (), string);
+/*
+* Feature in Windows.  When an edit control with ES_MULTILINE
+* style that does not have the WS_VSCROLL style is full (i.e.
+* there is no space at the end to draw any more characters),
+* EM_REPLACESEL sends a WM_CHAR with a backspace character
+* to remove any further text that is added.  This is an
+* implementation detail of the edit control that is unexpected
+* and can cause endless recursion when EM_REPLACESEL is sent
+* from a WM_CHAR handler.  The fix is to ignore calling the
+* handler from WM_CHAR.
+*/
+ignoreCharacter = true;
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer);
+ignoreCharacter = false;
+OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0);
+}
+static int checkStyle (int style) {
+if ((style & SWT.SEARCH) !is 0) {
+style |= SWT.SINGLE | SWT.BORDER;
+style &= ~SWT.PASSWORD;
+}
+if (OS.COMCTL32_MAJOR < 6) style &= ~SWT.SEARCH;
+if ((style & SWT.SINGLE) !is 0 && (style & SWT.MULTI) !is 0) {
+style &= ~SWT.MULTI;
+}
+style = checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
+if ((style & SWT.SINGLE) !is 0) style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP);
+if ((style & SWT.WRAP) !is 0) {
+style |= SWT.MULTI;
+style &= ~SWT.H_SCROLL;
+}
+if ((style & SWT.MULTI) !is 0) style &= ~SWT.PASSWORD;
+if ((style & (SWT.SINGLE | SWT.MULTI)) !is 0) return style;
+if ((style & (SWT.H_SCROLL | SWT.V_SCROLL)) !is 0) return style | SWT.MULTI;
+return style | SWT.SINGLE;
+}
+/**
+* Clears the selection.
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void clearSelection () {
+checkWidget ();
+static if (OS.IsWinCE) {
+/*
+* Bug in WinCE.  Calling EM_SETSEL with -1 and 0 is equivalent
+* to calling EM_SETSEL with 0 and -1.  It causes the entire
+* text to be selected instead of clearing the selection.  The
+* fix is to set the start of the selection to the  end of the
+* current selection.
+*/
+int end;
+OS.SendMessage (handle, OS.EM_GETSEL, null, &end);
+OS.SendMessage (handle, OS.EM_SETSEL, end , end );
+} else {
+OS.SendMessage (handle, OS.EM_SETSEL, -1, 0);
+}
+}
+override public Point computeSize (int wHint, int hHint, bool changed) {
+checkWidget ();
+int height = 0, width = 0;
+if (wHint is SWT.DEFAULT || hHint is SWT.DEFAULT) {
+HFONT newFont, oldFont;
+auto hDC = OS.GetDC (handle);
+newFont = cast(HFONT) OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+if (newFont !is null) oldFont = OS.SelectObject (hDC, newFont);
+TEXTMETRIC tm;
+OS.GetTextMetrics (hDC, &tm);
+int count = (style & SWT.SINGLE) !is 0 ? 1 : OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0);
+height = count * tm.tmHeight;
+RECT rect;
+int flags = OS.DT_CALCRECT | OS.DT_EDITCONTROL | OS.DT_NOPREFIX;
+bool wrap = (style & SWT.MULTI) !is 0 && (style & SWT.WRAP) !is 0;
+if (wrap && wHint !is SWT.DEFAULT) {
+flags |= OS.DT_WORDBREAK;
+rect.right = wHint;
+}
+int length = OS.GetWindowTextLength (handle);
+if (length !is 0) {
+TCHAR[] buffer = NewTCHARs (getCodePage (), length + 1);
+OS.GetWindowText (handle, buffer.ptr, length + 1);
+OS.DrawText (hDC, buffer.ptr, length, &rect, flags);
+width = rect.right - rect.left;
+}
+//This code is intentionally commented
+//      if (OS.COMCTL32_MAJOR >= 6) {
+//          if ((style & SWT.SEARCH) !is 0) {
+//              length = message.length ();
+//              if (length !is 0) {
+//                  char [] buffer = new char [length + 1];
+//                  message.getChars (0, length, buffer, 0);
+//                  SIZE size = new SIZE ();
+//                  OS.GetTextExtentPoint32W (hDC, buffer, length, size);
+//                  width = Math.max (width, size.cx);
+//              }
+//          }
+//      }
+if (wrap && hHint is SWT.DEFAULT) {
+int newHeight = rect.bottom - rect.top;
+if (newHeight !is 0) height = newHeight;
+}
+if (newFont !is null) OS.SelectObject (hDC, oldFont);
+OS.ReleaseDC (handle, hDC);
+}
+if (width is 0) width = DEFAULT_WIDTH;
+if (height is 0) height = DEFAULT_HEIGHT;
+if (wHint !is SWT.DEFAULT) width = wHint;
+if (hHint !is SWT.DEFAULT) height = hHint;
+Rectangle trim = computeTrim (0, 0, width, height);
+return new Point (trim.width, trim.height);
+}
+override public Rectangle computeTrim (int x, int y, int width, int height) {
+checkWidget ();
+Rectangle rect = super.computeTrim (x, y, width, height);
+/*
+* The preferred height of a single-line text widget
+* has been hand-crafted to be the same height as
+* the single-line text widget in an editable combo
+* box.
+*/
+int /*long*/ margins = OS.SendMessage(handle, OS.EM_GETMARGINS, 0, 0);
+rect.x -= OS.LOWORD (margins);
+rect.width += OS.LOWORD (margins) + OS.HIWORD (margins);
+if ((style & SWT.H_SCROLL) !is 0) rect.width++;
+if ((style & SWT.BORDER) !is 0) {
+rect.x -= 1;
+rect.y -= 1;
+rect.width += 2;
+rect.height += 2;
+}
+return rect;
+}
+/**
+* Copies the selected text.
+* <p>
+* The current selection is copied to the clipboard.
+* </p>
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void copy () {
+checkWidget ();
+OS.SendMessage (handle, OS.WM_COPY, 0, 0);
+}
+override void createWidget () {
+super.createWidget ();
+message = "";
+doubleClick = true;
+setTabStops (tabs = 8);
+fixAlignment ();
+}
+/**
+* Cuts the selected text.
+* <p>
+* The current selection is first copied to the
+* clipboard and then deleted from the widget.
+* </p>
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void cut () {
+checkWidget ();
+if ((style & SWT.READ_ONLY) !is 0) return;
+OS.SendMessage (handle, OS.WM_CUT, 0, 0);
+}
+override int defaultBackground () {
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+return OS.GetSysColor ((bits & OS.ES_READONLY) !is 0 ? OS.COLOR_3DFACE : OS.COLOR_WINDOW);
+}
+override bool dragDetect (HWND hwnd, int x, int y, bool filter, bool [] detect, bool [] consume) {
+if (filter) {
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (start !is end ) {
+int /*long*/ lParam = OS.MAKELPARAM (x, y);
+int position = OS.LOWORD (OS.SendMessage (handle, OS.EM_CHARFROMPOS, 0, lParam));
+if (start <= position && position < end) {
+if (super.dragDetect (hwnd, x, y, filter, detect, consume)) {
+if (consume !is null) consume [0] = true;
+return true;
+}
+}
+}
+return false;
+}
+return super.dragDetect (hwnd, x, y, filter, detect, consume);
+}
+void fixAlignment () {
+/*
+* Feature in Windows.  When the edit control is not
+* mirrored, it uses WS_EX_RIGHT, WS_EX_RTLREADING and
+* WS_EX_LEFTSCROLLBAR to give the control a right to
+* left appearance.  This causes the control to be lead
+* aligned no matter what alignment was specified by
+* the programmer.  For example, setting ES_RIGHT and
+* WS_EX_LAYOUTRTL should cause the contents of the
+* control to be left (trail) aligned in a mirrored world.
+* When the orientation is changed by the user or
+* specified by the programmer, WS_EX_RIGHT conflicts
+* with the mirrored alignment.  The fix is to clear
+* or set WS_EX_RIGHT to achieve the correct alignment
+* according to the orientation and mirroring.
+*/
+if ((style & SWT.MIRRORED) !is 0) return;
+int bits1 = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
+int bits2 = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((style & SWT.LEFT_TO_RIGHT) !is 0) {
+/*
+* Bug in Windows 98. When the edit control is created
+* with the style ES_RIGHT it automatically sets the
+* WS_EX_LEFTSCROLLBAR bit.  The fix is to clear the
+* bit when the orientation of the control is left
+* to right.
+*/
+bits1 &= ~OS.WS_EX_LEFTSCROLLBAR;
+if ((style & SWT.RIGHT) !is 0) {
+bits1 |= OS.WS_EX_RIGHT;
+bits2 |= OS.ES_RIGHT;
+}
+if ((style & SWT.LEFT) !is 0) {
+bits1 &= ~OS.WS_EX_RIGHT;
+bits2 &= ~OS.ES_RIGHT;
+}
+} else {
+if ((style & SWT.RIGHT) !is 0) {
+bits1 &= ~OS.WS_EX_RIGHT;
+bits2 &= ~OS.ES_RIGHT;
+}
+if ((style & SWT.LEFT) !is 0) {
+bits1 |= OS.WS_EX_RIGHT;
+bits2 |= OS.ES_RIGHT;
+}
+}
+if ((style & SWT.CENTER) !is 0) {
+bits2 |= OS.ES_CENTER;
+}
+OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits1);
+OS.SetWindowLong (handle, OS.GWL_STYLE, bits2);
+}
+override public int getBorderWidth () {
+checkWidget ();
+/*
+* Feature in Windows 2000 and XP.  Despite the fact that WS_BORDER
+* is set when the edit control is created, the style bit is cleared.
+* The fix is to avoid the check for WS_BORDER and use the SWT widget
+* style bits instead.
+*/
+//  if ((style & SWT.BORDER) !is 0 && (style & SWT.FLAT) !is 0) {
+//      return OS.GetSystemMetrics (OS.SM_CXBORDER);
+//  }
+return super.getBorderWidth ();
+}
+/**
+* Returns the line number of the caret.
+* <p>
+* The line number of the caret is returned.
+* </p>
+*
+* @return the line number
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getCaretLineNumber () {
+checkWidget ();
+return OS.SendMessage (handle, OS.EM_LINEFROMCHAR, -1, 0);
+}
+/**
+* Returns a point describing the receiver's location relative
+* to its parent (or its display if its parent is null).
+* <p>
+* The location of the caret is returned.
+* </p>
+*
+* @return a point, the location of the caret
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public Point getCaretLocation () {
+checkWidget ();
+/*
+* Bug in Windows.  For some reason, Windows is unable
+* to return the pixel coordinates of the last character
+* in the widget.  The fix is to temporarily insert a
+* space, query the coordinates and delete the space.
+* The selection is always an i-beam in this case because
+* this is the only time the start of the selection can
+* be equal to the last character position in the widget.
+* If EM_POSFROMCHAR fails for any other reason, return
+* pixel coordinates (0,0).
+*/
+int position = getCaretPosition ();
+int /*long*/ caretPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, position, 0);
+if (caretPos is -1) {
+caretPos = 0;
+if (position >= OS.GetWindowTextLength (handle)) {
+int cp = getCodePage ();
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+OS.SendMessage (handle, OS.EM_SETSEL, position, position);
+/*
+* Feature in Windows.  When an edit control with ES_MULTILINE
+* style that does not have the WS_VSCROLL style is full (i.e.
+* there is no space at the end to draw any more characters),
+* EM_REPLACESEL sends a WM_CHAR with a backspace character
+* to remove any further text that is added.  This is an
+* implementation detail of the edit control that is unexpected
+* and can cause endless recursion when EM_REPLACESEL is sent
+* from a WM_CHAR handler.  The fix is to ignore calling the
+* handler from WM_CHAR.
+*/
+ignoreCharacter = ignoreModify = true;
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, StrToTCHARz (cp, " "));
+caretPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, position, 0);
+OS.SendMessage (handle, OS.EM_SETSEL, position, position + 1);
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, StrToTCHARz (cp, ""));
+ignoreCharacter = ignoreModify = false;
+OS.SendMessage (handle, OS.EM_SETSEL, start , start );
+OS.SendMessage (handle, OS.EM_SETSEL, start , end );
+}
+}
+return new Point (OS.GET_X_LPARAM (caretPos), OS.GET_Y_LPARAM (caretPos));
+}
+/**
+* Returns the character position of the caret.
+* <p>
+* Indexing is zero based.
+* </p>
+*
+* @return the position of the caret
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getCaretPosition () {
+checkWidget ();
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+/*
+* In Windows, there is no API to get the position of the caret
+* when the selection is not an i-beam.  The best that can be done
+* is to query the pixel position of the current caret and compare
+* it to the pixel position of the start and end of the selection.
+*
+* NOTE:  This does not work when the i-beam belongs to another
+* control.  In this case, guess that the i-beam is at the start
+* of the selection.
+*/
+int caret = start ;
+if (start !is end ) {
+int startLine = OS.SendMessage (handle, OS.EM_LINEFROMCHAR, start, 0);
+int endLine = OS.SendMessage (handle, OS.EM_LINEFROMCHAR, end, 0);
+if (startLine is endLine) {
+static if (!OS.IsWinCE) {
+int idThread = OS.GetWindowThreadProcessId (handle, null);
+GUITHREADINFO lpgui;
+lpgui.cbSize = GUITHREADINFO.sizeof;
+if (OS.GetGUIThreadInfo (idThread, &lpgui)) {
+if (lpgui.hwndCaret is handle || lpgui.hwndCaret is null) {
+POINT ptCurrentPos;
+if (OS.GetCaretPos (&ptCurrentPos)) {
+int endPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, end, 0);
+if (endPos is -1) {
+int startPos = OS.SendMessage (handle, OS.EM_POSFROMCHAR, start, 0);
+int startX = cast(short) (startPos & 0xFFFF);
+if (ptCurrentPos.x > startX) caret = end;
+} else {
+int endX = cast(short) (endPos & 0xFFFF);
+if (ptCurrentPos.x >= endX) caret = end;
+}
+}
+}
+}
+}
+} else {
+int caretPos = OS.SendMessage (handle, OS.EM_LINEINDEX, -1, 0);
+int caretLine = OS.SendMessage (handle, OS.EM_LINEFROMCHAR, caretPos, 0);
+if (caretLine is endLine) caret = end;
+}
+}
+if (!OS.IsUnicode && OS.IsDBLocale) caret = mbcsToWcsPos (caret);
+return caret;
+}
+/**
+* Returns the number of characters.
+*
+* @return number of characters in the widget
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getCharCount () {
+checkWidget ();
+int length = OS.GetWindowTextLength (handle);
+if (!OS.IsUnicode && OS.IsDBLocale) length = mbcsToWcsPos (length);
+return length;
+}
+/**
+* Returns the double click enabled flag.
+* <p>
+* The double click flag enables or disables the
+* default action of the text widget when the user
+* double clicks.
+* </p>
+*
+* @return whether or not double click is enabled
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public bool getDoubleClickEnabled () {
+checkWidget ();
+return doubleClick;
+}
+/**
+* Returns the echo character.
+* <p>
+* The echo character is the character that is
+* displayed when the user enters text or the
+* text is changed by the programmer.
+* </p>
+*
+* @return the echo character
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see #setEchoChar
+*/
+public char getEchoChar () {
+checkWidget ();
+wchar echo = cast(wchar) OS.SendMessage (handle, OS.EM_GETPASSWORDCHAR, 0, 0);
+if (echo !is 0 && (echo = Display.mbcsToWcs (echo, getCodePage ())) is 0) echo = '*';
+return echo;
+}
+/**
+* Returns the editable state.
+*
+* @return whether or not the receiver is editable
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public bool getEditable () {
+checkWidget ();
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+return (bits & OS.ES_READONLY) is 0;
+}
+/**
+* Returns the number of lines.
+*
+* @return the number of lines in the widget
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getLineCount () {
+checkWidget ();
+return OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0);
+}
+/**
+* Returns the line delimiter.
+*
+* @return a string that is the line delimiter
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see #DELIMITER
+*/
+public String getLineDelimiter () {
+checkWidget ();
+return DELIMITER;
+}
+/**
+* Returns the height of a line.
+*
+* @return the height of a row of text
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getLineHeight () {
+checkWidget ();
+HFONT newFont, oldFont;
+auto hDC = OS.GetDC (handle);
+newFont = cast(HFONT) OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+if (newFont !is null) oldFont = OS.SelectObject (hDC, newFont);
+TEXTMETRIC tm;
+OS.GetTextMetrics (hDC, &tm);
+if (newFont !is null) OS.SelectObject (hDC, oldFont);
+OS.ReleaseDC (handle, hDC);
+return tm.tmHeight;
+}
+/**
+* Returns the orientation of the receiver, which will be one of the
+* constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>.
+*
+* @return the orientation style
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @since 2.1.2
+*/
+public int getOrientation () {
+checkWidget();
+return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT);
+}
+/**
+* Returns the widget message. When the widget is created
+* with the style <code>SWT.SEARCH</code>, the message text
+* is displayed as a hint for the user, indicating the
+* purpose of the field.
+* <p>
+* Note: This operation is a <em>HINT</em> and is not
+* supported on platforms that do not have this concept.
+* </p>
+*
+* @return the widget message
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @since 3.3
+*/
+public String getMessage () {
+checkWidget ();
+return message;
+}
+/**
+* Returns the character position at the given point in the receiver
+* or -1 if no such position exists. The point is in the coordinate
+* system of the receiver.
+* <p>
+* Indexing is zero based.
+* </p>
+*
+* @return the position of the caret
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @since 3.3
+*/
+//TODO - Javadoc
+/*public*/ int getPosition (Point point) {
+checkWidget();
+if (point is null) error (SWT.ERROR_NULL_ARGUMENT);
+int /*long*/ lParam = OS.MAKELPARAM (point.x, point.y);
+int position = OS.LOWORD (OS.SendMessage (handle, OS.EM_CHARFROMPOS, 0, lParam));
+if (!OS.IsUnicode && OS.IsDBLocale) position = mbcsToWcsPos (position);
+return position;
+}
+/**
+* Returns a <code>Point</code> whose x coordinate is the
+* character position representing the start of the selected
+* text, and whose y coordinate is the character position
+* representing the end of the selection. An "empty" selection
+* is indicated by the x and y coordinates having the same value.
+* <p>
+* Indexing is zero based.  The range of a selection is from
+* 0..N where N is the number of characters in the widget.
+* </p>
+*
+* @return a point representing the selection start and end
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public Point getSelection () {
+checkWidget ();
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (!OS.IsUnicode && OS.IsDBLocale) {
+start = mbcsToWcsPos (start);
+end = mbcsToWcsPos (end);
+}
+return new Point (start, end);
+}
+/**
+* Returns the number of selected characters.
+*
+* @return the number of selected characters.
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getSelectionCount () {
+checkWidget ();
+Point selection = getSelection ();
+return selection.y - selection.x;
+}
+/**
+* Gets the selected text, or an empty string if there is no current selection.
+*
+* @return the selected text
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public String getSelectionText () {
+checkWidget ();
+int length = OS.GetWindowTextLength (handle);
+if (length is 0) return "";
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (start is end ) return "";
+TCHAR[] buffer = NewTCHARs (getCodePage (), length + 1);
+OS.GetWindowText (handle, buffer.ptr, length + 1);
+return TCHARsToStr( buffer[ start .. end ] );
+}
+/**
+* Returns the number of tabs.
+* <p>
+* Tab stop spacing is specified in terms of the
+* space (' ') character.  The width of a single
+* tab stop is the pixel width of the spaces.
+* </p>
+*
+* @return the number of tab characters
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getTabs () {
+checkWidget ();
+return tabs;
+}
+int getTabWidth (int tabs) {
+HFONT oldFont;
+RECT rect;
+auto hDC = OS.GetDC (handle);
+HFONT newFont = cast(HFONT) OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+if (newFont !is null) oldFont = OS.SelectObject (hDC, newFont);
+int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX;
+TCHAR[] SPACE = StrToTCHARs (getCodePage (), " ", false);
+OS.DrawText (hDC, SPACE.ptr, SPACE.length, &rect, flags);
+if (newFont !is null) OS.SelectObject (hDC, oldFont);
+OS.ReleaseDC (handle, hDC);
+return (rect.right - rect.left) * tabs;
+}
+/**
+* Returns the widget text.
+* <p>
+* The text for a text widget is the characters in the widget, or
+* an empty string if this has never been set.
+* </p>
+*
+* @return the widget text
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public String getText () {
+checkWidget ();
+int length_ = OS.GetWindowTextLength (handle);
+if (length_ is 0) return "";
+TCHAR[] buffer = NewTCHARs (getCodePage (), length_ + 1);
+OS.GetWindowText (handle, buffer.ptr, length_ + 1);
+return TCHARsToStr( buffer[0 .. length_] );
+}
+/**
+* Returns a range of text.  Returns an empty string if the
+* start of the range is greater than the end.
+* <p>
+* Indexing is zero based.  The range of
+* a selection is from 0..N-1 where N is
+* the number of characters in the widget.
+* </p>
+*
+* @param start the start of the range
+* @param end the end of the range
+* @return the range of text
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public String getText (int start, int end) {
+checkWidget ();
+if (!(start <= end && 0 <= end)) return "";
+int length = OS.GetWindowTextLength (handle);
+if (!OS.IsUnicode && OS.IsDBLocale) length = mbcsToWcsPos (length);
+start = Math.max (0, start);
+end = Math.min (end, length - 1);
+/*
+* NOTE: The current implementation uses substring ()
+* which can reference a potentially large character
+* array.
+*/
+return getText ().substring (start, end + 1);
+}
+/**
+* Returns the maximum number of characters that the receiver is capable of holding.
+* <p>
+* If this has not been changed by <code>setTextLimit()</code>,
+* it will be the constant <code>Text.LIMIT</code>.
+* </p>
+*
+* @return the text limit
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see #LIMIT
+*/
+public int getTextLimit () {
+checkWidget ();
+return OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF;
+}
+/**
+* Returns the zero-relative index of the line which is currently
+* at the top of the receiver.
+* <p>
+* This index can change when lines are scrolled or new lines are added or removed.
+* </p>
+*
+* @return the index of the top line
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getTopIndex () {
+checkWidget ();
+if ((style & SWT.SINGLE) !is 0) return 0;
+return OS.SendMessage (handle, OS.EM_GETFIRSTVISIBLELINE, 0, 0);
+}
+/**
+* Returns the top pixel.
+* <p>
+* The top pixel is the pixel position of the line
+* that is currently at the top of the widget.  On
+* some platforms, a text widget can be scrolled by
+* pixels instead of lines so that a partial line
+* is displayed at the top of the widget.
+* </p><p>
+* The top pixel changes when the widget is scrolled.
+* The top pixel does not include the widget trimming.
+* </p>
+*
+* @return the pixel position of the top line
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public int getTopPixel () {
+checkWidget ();
+/*
+* Note, EM_GETSCROLLPOS is implemented in Rich Edit 3.0
+* and greater.  The plain text widget and previous versions
+* of Rich Edit return zero.
+*/
+int [2] buffer;
+int code = OS.SendMessage (handle, OS.EM_GETSCROLLPOS, 0, buffer.ptr);
+if (code is 1) return buffer [1];
+return getTopIndex () * getLineHeight ();
+}
+/**
+* Inserts a string.
+* <p>
+* The old selection is replaced with the new text.
+* </p>
+*
+* @param string the string
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void insert (String string) {
+checkWidget ();
+// SWT extension: allow null string
+//if (string is null) error (SWT.ERROR_NULL_ARGUMENT);
+string = Display.withCrLf (string);
+if (hooks (SWT.Verify) || filters (SWT.Verify)) {
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+string = verifyText (string, start, end, null);
+if (string is null) return;
+}
+TCHAR* buffer = StrToTCHARz (getCodePage (), string );
+/*
+* Feature in Windows.  When an edit control with ES_MULTILINE
+* style that does not have the WS_VSCROLL style is full (i.e.
+* there is no space at the end to draw any more characters),
+* EM_REPLACESEL sends a WM_CHAR with a backspace character
+* to remove any further text that is added.  This is an
+* implementation detail of the edit control that is unexpected
+* and can cause endless recursion when EM_REPLACESEL is sent
+* from a WM_CHAR handler.  The fix is to ignore calling the
+* handler from WM_CHAR.
+*/
+ignoreCharacter = true;
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer);
+ignoreCharacter = false;
+}
+int mbcsToWcsPos (int mbcsPos) {
+if (mbcsPos <= 0) return 0;
+if (OS.IsUnicode) return mbcsPos;
+int cp = getCodePage ();
+int wcsTotal = 0, mbcsTotal = 0;
+CHAR [] buffer = new CHAR [128];
+String delimiter = getLineDelimiter();
+int delimiterSize = delimiter.length;
+int count = OS.SendMessageA (handle, OS.EM_GETLINECOUNT, 0, 0);
+for (int line=0; line<count; line++) {
+int wcsSize = 0;
+int linePos = OS.SendMessageA (handle, OS.EM_LINEINDEX, line, 0);
+int mbcsSize = OS.SendMessageA (handle, OS.EM_LINELENGTH, linePos, 0);
+if (mbcsSize !is 0) {
+if (mbcsSize + delimiterSize > buffer.length) {
+buffer = new CHAR [mbcsSize + delimiterSize];
+}
+//ENDIAN
+buffer [0] = cast(char) (mbcsSize & 0xFF);
+buffer [1] = cast(char) (mbcsSize >> 8);
+mbcsSize = OS.SendMessageA (handle, OS.EM_GETLINE, line, buffer.ptr);
+wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer.ptr, mbcsSize, null, 0);
+}
+if (line - 1 !is count) {
+for (int i=0; i<delimiterSize; i++) {
+buffer [mbcsSize++] = cast(CHAR) delimiter.charAt (i);
+}
+wcsSize += delimiterSize;
+}
+if ((mbcsTotal + mbcsSize) >= mbcsPos) {
+int bufferSize = mbcsPos - mbcsTotal;
+wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer.ptr, bufferSize, null, 0);
+return wcsTotal + wcsSize;
+}
+wcsTotal += wcsSize;
+mbcsTotal += mbcsSize;
+}
+return wcsTotal;
+}
+/**
+* Pastes text from clipboard.
+* <p>
+* The selected text is deleted from the widget
+* and new text inserted from the clipboard.
+* </p>
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void paste () {
+checkWidget ();
+if ((style & SWT.READ_ONLY) !is 0) return;
+OS.SendMessage (handle, OS.WM_PASTE, 0, 0);
+}
+override void releaseWidget () {
+super.releaseWidget ();
+message = null;
+}
+/**
+* Removes the listener from the collection of listeners who will
+* be notified when the receiver's text is modified.
+*
+* @param listener the listener which should no longer be notified
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see ModifyListener
+* @see #addModifyListener
+*/
+public void removeModifyListener (ModifyListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+if (eventTable is null) return;
+eventTable.unhook (SWT.Modify, listener);
+}
+/**
+* Removes the listener from the collection of listeners who will
+* be notified when the control is selected by the user.
+*
+* @param listener the listener which should no longer be notified
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see SelectionListener
+* @see #addSelectionListener
+*/
+public void removeSelectionListener (SelectionListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+if (eventTable is null) return;
+eventTable.unhook (SWT.Selection, listener);
+eventTable.unhook (SWT.DefaultSelection,listener);
+}
+/**
+* Removes the listener from the collection of listeners who will
+* be notified when the control is verified.
+*
+* @param listener the listener which should no longer be notified
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see VerifyListener
+* @see #addVerifyListener
+*/
+public void removeVerifyListener (VerifyListener listener) {
+checkWidget ();
+if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+if (eventTable is null) return;
+eventTable.unhook (SWT.Verify, listener);
+}
+/**
+* Selects all the text in the receiver.
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void selectAll () {
+checkWidget ();
+OS.SendMessage (handle, OS.EM_SETSEL, 0, -1);
+}
+override bool sendKeyEvent (int type, int msg, int wParam, int lParam, Event event) {
+if (!super.sendKeyEvent (type, msg, wParam, lParam, event)) {
+return false;
+}
+if ((style & SWT.READ_ONLY) !is 0) return true;
+if (ignoreVerify) return true;
+if (type !is SWT.KeyDown) return true;
+if (msg !is OS.WM_CHAR && msg !is OS.WM_KEYDOWN && msg !is OS.WM_IME_CHAR) {
+return true;
+}
+if (event.character is 0) return true;
+if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return true;
+char key = event.character;
+int stateMask = event.stateMask;
+/*
+* Disable all magic keys that could modify the text
+* and don't send events when Alt, Shift or Ctrl is
+* pressed.
+*/
+switch (msg) {
+case OS.WM_CHAR:
+if (key !is 0x08 && key !is 0x7F && key !is '\r' && key !is '\t' && key !is '\n') break;
+// FALL THROUGH
+case OS.WM_KEYDOWN:
+if ((stateMask & (SWT.ALT | SWT.SHIFT | SWT.CONTROL)) !is 0) return false;
+break;
+default:
+}
+/*
+* Feature in Windows.  If the left button is down in
+* the text widget, it refuses the character.  The fix
+* is to detect this case and avoid sending a verify
+* event.
+*/
+if (OS.GetKeyState (OS.VK_LBUTTON) < 0) {
+if (handle is OS.GetCapture()) return true;
+}
+/* Verify the character */
+String oldText = "";
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+switch (key) {
+case 0x08:  /* Bs */
+if (start is end ) {
+if (start is 0) return true;
+int lineStart = OS.SendMessage (handle, OS.EM_LINEINDEX, -1, 0);
+if (start is lineStart) {
+start = start - DELIMITER.length;
+} else {
+start = start - 1;
+if (!OS.IsUnicode && OS.IsDBLocale) {
+int newStart, newEnd;
+OS.SendMessage (handle, OS.EM_SETSEL, start, end);
+OS.SendMessage (handle, OS.EM_GETSEL, &newStart, &newEnd);
+if (start !is newStart) start = start - 1;
+}
+}
+start = Math.max (start, 0);
+}
+break;
+case 0x7F:  /* Del */
+if (start is end) {
+int length = OS.GetWindowTextLength (handle);
+if (start is length) return true;
+int line = OS.SendMessage (handle, OS.EM_LINEFROMCHAR, end, 0);
+int lineStart = OS.SendMessage (handle, OS.EM_LINEINDEX, line + 1, 0);
+if (end is lineStart - DELIMITER.length) {
+end = end + DELIMITER.length;
+} else {
+end = end + 1;
+if (!OS.IsUnicode && OS.IsDBLocale) {
+int newStart, newEnd;
+OS.SendMessage (handle, OS.EM_SETSEL, start, end);
+OS.SendMessage (handle, OS.EM_GETSEL, &newStart, &newEnd);
+if (end !is newEnd) end = end + 1;
+}
+}
+end = Math.min (end, length);
+}
+break;
+case '\r':  /* Return */
+if ((style & SWT.SINGLE) !is 0) return true;
+oldText = DELIMITER;
+break;
+default:    /* Tab and other characters */
+if (key !is '\t' && key < 0x20) return true;
+oldText = [key];
+break;
+}
+String newText = verifyText (oldText, start, end, event);
+if (newText is null) return false;
+if (newText is oldText) return true;
+newText = Display.withCrLf (newText);
+TCHAR* buffer = StrToTCHARz (getCodePage (), newText);
+OS.SendMessage (handle, OS.EM_SETSEL, start, end);
+/*
+* Feature in Windows.  When an edit control with ES_MULTILINE
+* style that does not have the WS_VSCROLL style is full (i.e.
+* there is no space at the end to draw any more characters),
+* EM_REPLACESEL sends a WM_CHAR with a backspace character
+* to remove any further text that is added.  This is an
+* implementation detail of the edit control that is unexpected
+* and can cause endless recursion when EM_REPLACESEL is sent
+* from a WM_CHAR handler.  The fix is to ignore calling the
+* handler from WM_CHAR.
+*/
+ignoreCharacter = true;
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer);
+ignoreCharacter = false;
+return false;
+}
+override void setBounds (int x, int y, int width, int height, int flags) {
+/*
+* Feature in Windows.  When the caret is moved,
+* the text widget scrolls to show the new location.
+* This means that the text widget may be scrolled
+* to the right in order to show the caret when the
+* widget is not large enough to show both the caret
+* location and all the text.  Unfortunately, when
+* the text widget is resized such that all the text
+* and the caret could be visible, Windows does not
+* scroll the widget back.  The fix is to resize the
+* text widget, set the selection to the start of the
+* text and then restore the selection.  This will
+* cause the text widget compute the correct scroll
+* position.
+*/
+if ((flags & OS.SWP_NOSIZE) is 0 && width !is 0) {
+RECT rect;
+OS.GetWindowRect (handle, &rect);
+int /*long*/ margins = OS.SendMessage (handle, OS.EM_GETMARGINS, 0, 0);
+int marginWidth = OS.LOWORD (margins) + OS.HIWORD (margins);
+if (rect.right - rect.left <= marginWidth) {
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (start !is 0 || end !is 0) {
+SetWindowPos (handle, null, x, y, width, height, flags);
+OS.SendMessage (handle, OS.EM_SETSEL, 0, 0);
+OS.SendMessage (handle, OS.EM_SETSEL, start, end);
+return;
+}
+}
+}
+super.setBounds (x, y, width, height, flags);
+}
+override void setDefaultFont () {
+super.setDefaultFont ();
+setMargins ();
+}
+/**
+* Sets the double click enabled flag.
+* <p>
+* The double click flag enables or disables the
+* default action of the text widget when the user
+* double clicks.
+* </p><p>
+* Note: This operation is a hint and is not supported on
+* platforms that do not have this concept.
+* </p>
+*
+* @param doubleClick the new double click flag
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setDoubleClickEnabled (bool doubleClick) {
+checkWidget ();
+this.doubleClick = doubleClick;
+}
+/**
+* Sets the echo character.
+* <p>
+* The echo character is the character that is
+* displayed when the user enters text or the
+* text is changed by the programmer. Setting
+* the echo character to '\0' clears the echo
+* character and redraws the original text.
+* If for any reason the echo character is invalid,
+* or if the platform does not allow modification
+* of the echo character, the default echo character
+* for the platform is used.
+* </p>
+*
+* @param echo the new echo character
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setEchoChar (char echo) {
+checkWidget ();
+if ((style & SWT.MULTI) !is 0) return;
+if (echo !is 0) {
+if ((echo = cast(char) Display.wcsToMbcs (echo, getCodePage ())) is 0) echo = '*';
+}
+OS.SendMessage (handle, OS.EM_SETPASSWORDCHAR, echo, 0);
+/*
+* Bug in Windows.  When the password character is changed,
+* Windows does not redraw to show the new password character.
+* The fix is to force a redraw when the character is set.
+*/
+OS.InvalidateRect (handle, null, true);
+}
+/**
+* Sets the editable state.
+*
+* @param editable the new editable state
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setEditable (bool editable) {
+checkWidget ();
+style &= ~SWT.READ_ONLY;
+if (!editable) style |= SWT.READ_ONLY;
+OS.SendMessage (handle, OS.EM_SETREADONLY, editable ? 0 : 1, 0);
+}
+override public void setFont (Font font) {
+checkWidget ();
+super.setFont (font);
+setTabStops (tabs);
+setMargins ();
+}
+void setMargins () {
+/*
+* Bug in Windows.  When EM_SETCUEBANNER is used to set the
+* banner text, the control does not take into account the
+* margins, causing the first character to be clipped.  The
+* fix is to set the margins to zero.
+*/
+if (OS.COMCTL32_MAJOR >= 6) {
+if ((style & SWT.SEARCH) !is 0) {
+OS.SendMessage (handle, OS.EM_SETMARGINS, OS.EC_LEFTMARGIN | OS.EC_RIGHTMARGIN, 0);
+}
+}
+}
+/**
+* Sets the widget message. When the widget is created
+* with the style <code>SWT.SEARCH</code>, the message text
+* is displayed as a hint for the user, indicating the
+* purpose of the field.
+* <p>
+* Note: This operation is a <em>HINT</em> and is not
+* supported on platforms that do not have this concept.
+* </p>
+*
+* @param message the new message
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @since 3.3
+*/
+public void setMessage (String message) {
+checkWidget ();
+// SWT extension: allow null string
+//if (message is null) error (SWT.ERROR_NULL_ARGUMENT);
+this.message = message;
+if (OS.COMCTL32_MAJOR >= 6) {
+if ((style & SWT.SEARCH) !is 0) {
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((bits & OS.ES_MULTILINE) is 0) {
+OS.SendMessage (handle, OS.EM_SETCUEBANNER, 0, StrToTCHARz( 0, message ));
+}
+}
+}
+}
+/**
+* Sets the orientation of the receiver, which must be one
+* of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>.
+* <p>
+* Note: This operation is a hint and is not supported on
+* platforms that do not have this concept.
+* </p>
+*
+* @param orientation new orientation style
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @since 2.1.2
+*/
+public void setOrientation (int orientation) {
+checkWidget();
+static if (OS.IsWinCE) return;
+if (OS.WIN32_VERSION < OS.VERSION (4, 10)) return;
+int flags = SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT;
+if ((orientation & flags) is 0 || (orientation & flags) is flags) return;
+style &= ~flags;
+style |= orientation & flags;
+int bits = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
+if ((style & SWT.RIGHT_TO_LEFT) !is 0) {
+bits |= OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR;
+} else {
+bits &= ~(OS.WS_EX_RTLREADING | OS.WS_EX_LEFTSCROLLBAR);
+}
+OS.SetWindowLong (handle, OS.GWL_EXSTYLE, bits);
+fixAlignment ();
+}
+/**
+* Sets the selection.
+* <p>
+* Indexing is zero based.  The range of
+* a selection is from 0..N where N is
+* the number of characters in the widget.
+* </p><p>
+* Text selections are specified in terms of
+* caret positions.  In a text widget that
+* contains N characters, there are N+1 caret
+* positions, ranging from 0..N.  This differs
+* from other functions that address character
+* position such as getText () that use the
+* regular array indexing rules.
+* </p>
+*
+* @param start new caret position
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setSelection (int start) {
+checkWidget ();
+if (!OS.IsUnicode && OS.IsDBLocale) start = wcsToMbcsPos (start);
+OS.SendMessage (handle, OS.EM_SETSEL, start, start);
+OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0);
+}
+/**
+* Sets the selection to the range specified
+* by the given start and end indices.
+* <p>
+* Indexing is zero based.  The range of
+* a selection is from 0..N where N is
+* the number of characters in the widget.
+* </p><p>
+* Text selections are specified in terms of
+* caret positions.  In a text widget that
+* contains N characters, there are N+1 caret
+* positions, ranging from 0..N.  This differs
+* from other functions that address character
+* position such as getText () that use the
+* usual array indexing rules.
+* </p>
+*
+* @param start the start of the range
+* @param end the end of the range
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setSelection (int start, int end) {
+checkWidget ();
+if (!OS.IsUnicode && OS.IsDBLocale) {
+start = wcsToMbcsPos (start);
+end = wcsToMbcsPos (end);
+}
+OS.SendMessage (handle, OS.EM_SETSEL, start, end);
+OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0);
+}
+override public void setRedraw (bool redraw) {
+checkWidget ();
+super.setRedraw (redraw);
+/*
+* Feature in Windows.  When WM_SETREDRAW is used to turn
+* redraw off, the edit control is not scrolled to show the
+* i-beam.  The fix is to detect that the i-beam has moved
+* while redraw is turned off and force it to be visible
+* when redraw is restored.
+*/
+if (drawCount !is 0) return;
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (!redraw) {
+oldStart = start;  oldEnd = end;
+} else {
+if (oldStart is start && oldEnd is end) return;
+OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0);
+}
+}
+/**
+* Sets the selection to the range specified
+* by the given point, where the x coordinate
+* represents the start index and the y coordinate
+* represents the end index.
+* <p>
+* Indexing is zero based.  The range of
+* a selection is from 0..N where N is
+* the number of characters in the widget.
+* </p><p>
+* Text selections are specified in terms of
+* caret positions.  In a text widget that
+* contains N characters, there are N+1 caret
+* positions, ranging from 0..N.  This differs
+* from other functions that address character
+* position such as getText () that use the
+* usual array indexing rules.
+* </p>
+*
+* @param selection the point
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_NULL_ARGUMENT - if the point is null</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setSelection (Point selection) {
+checkWidget ();
+if (selection is null) error (SWT.ERROR_NULL_ARGUMENT);
+setSelection (selection.x, selection.y);
+}
+/**
+* Sets the number of tabs.
+* <p>
+* Tab stop spacing is specified in terms of the
+* space (' ') character.  The width of a single
+* tab stop is the pixel width of the spaces.
+* </p>
+*
+* @param tabs the number of tabs
+*
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setTabs (int tabs) {
+checkWidget ();
+if (tabs < 0) return;
+setTabStops (this.tabs = tabs);
+}
+void setTabStops (int tabs) {
+/*
+* Feature in Windows.  Windows expects the tab spacing in
+* dialog units so we must convert from space widths.  Due
+* to round off error, the tab spacing may not be the exact
+* number of space widths, depending on the font.
+*/
+int width = (getTabWidth (tabs) * 4) / OS.LOWORD (OS.GetDialogBaseUnits ());
+OS.SendMessage (handle, OS.EM_SETTABSTOPS, 1, &width);
+}
+/**
+* Sets the contents of the receiver to the given string. If the receiver has style
+* SINGLE and the argument contains multiple lines of text, the result of this
+* operation is undefined and may vary from platform to platform.
+*
+* @param string the new text
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setText (String string) {
+checkWidget ();
+// SWT extension: allow null string
+//if (string is null) error (SWT.ERROR_NULL_ARGUMENT);
+string = Display.withCrLf (string);
+if (hooks (SWT.Verify) || filters (SWT.Verify)) {
+int length = OS.GetWindowTextLength (handle);
+string = verifyText (string, 0, length, null);
+if (string is null) return;
+}
+int limit = OS.SendMessage (handle, OS.EM_GETLIMITTEXT, 0, 0) & 0x7FFFFFFF;
+if (string.length > limit) string = string.substring (0, limit);
+TCHAR* buffer = StrToTCHARz (getCodePage (), string);
+OS.SetWindowText (handle, buffer);
+/*
+* Bug in Windows.  When the widget is multi line
+* text widget, it does not send a WM_COMMAND with
+* control code EN_CHANGE from SetWindowText () to
+* notify the application that the text has changed.
+* The fix is to send the event.
+*/
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((bits & OS.ES_MULTILINE) !is 0) {
+sendEvent (SWT.Modify);
+// widget could be disposed at this point
+}
+}
+/**
+* Sets the maximum number of characters that the receiver
+* is capable of holding to be the argument.
+* <p>
+* Instead of trying to set the text limit to zero, consider
+* creating a read-only text widget.
+* </p><p>
+* To reset this value to the default, use <code>setTextLimit(Text.LIMIT)</code>.
+* Specifying a limit value larger than <code>Text.LIMIT</code> sets the
+* receiver's limit to <code>Text.LIMIT</code>.
+* </p>
+*
+* @param limit new text limit
+*
+* @exception IllegalArgumentException <ul>
+*    <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li>
+* </ul>
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*
+* @see #LIMIT
+*/
+public void setTextLimit (int limit) {
+checkWidget ();
+if (limit is 0) error (SWT.ERROR_CANNOT_BE_ZERO);
+OS.SendMessage (handle, OS.EM_SETLIMITTEXT, limit, 0);
+}
+/**
+* Sets the zero-relative index of the line which is currently
+* at the top of the receiver. This index can change when lines
+* are scrolled or new lines are added and removed.
+*
+* @param index the index of the top item
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void setTopIndex (int index) {
+checkWidget ();
+if ((style & SWT.SINGLE) !is 0) return;
+int count = OS.SendMessage (handle, OS.EM_GETLINECOUNT, 0, 0);
+index = Math.min (Math.max (index, 0), count - 1);
+int topIndex = OS.SendMessage (handle, OS.EM_GETFIRSTVISIBLELINE, 0, 0);
+OS.SendMessage (handle, OS.EM_LINESCROLL, 0, index - topIndex);
+}
+/**
+* Shows the selection.
+* <p>
+* If the selection is already showing
+* in the receiver, this method simply returns.  Otherwise,
+* lines are scrolled until the selection is visible.
+* </p>
+*
+* @exception SWTException <ul>
+*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+*    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+* </ul>
+*/
+public void showSelection () {
+checkWidget ();
+OS.SendMessage (handle, OS.EM_SCROLLCARET, 0, 0);
+}
+String verifyText (String string, int start, int end, Event keyEvent) {
+if (ignoreVerify) return string;
+Event event = new Event ();
+event.text = string;
+event.start = start;
+event.end = end;
+if (keyEvent !is null) {
+event.character = keyEvent.character;
+event.keyCode = keyEvent.keyCode;
+event.stateMask = keyEvent.stateMask;
+}
+if (!OS.IsUnicode && OS.IsDBLocale) {
+event.start = mbcsToWcsPos (start);
+event.end = mbcsToWcsPos (end);
+}
+/*
+* It is possible (but unlikely), that application
+* code could have disposed the widget in the verify
+* event.  If this happens, answer null to cancel
+* the operation.
+*/
+sendEvent (SWT.Verify, event);
+if (!event.doit || isDisposed ()) return null;
+return event.text;
+}
+int wcsToMbcsPos (int wcsPos) {
+if (wcsPos <= 0) return 0;
+if (OS.IsUnicode) return wcsPos;
+int cp = getCodePage ();
+int wcsTotal = 0, mbcsTotal = 0;
+CHAR [] buffer = new CHAR [128];
+String delimiter = getLineDelimiter ();
+int delimiterSize = delimiter.length;
+int count = OS.SendMessageA (handle, OS.EM_GETLINECOUNT, 0, 0);
+for (int line=0; line<count; line++) {
+int wcsSize = 0;
+int linePos = OS.SendMessageA (handle, OS.EM_LINEINDEX, line, 0);
+int mbcsSize = OS.SendMessageA (handle, OS.EM_LINELENGTH, linePos, 0);
+if (mbcsSize !is 0) {
+if (mbcsSize + delimiterSize > buffer.length) {
+buffer = new CHAR [mbcsSize + delimiterSize];
+}
+//ENDIAN
+buffer [0] = cast(char) (mbcsSize & 0xFF);
+buffer [1] = cast(char) (mbcsSize >> 8);
+mbcsSize = OS.SendMessageA (handle, OS.EM_GETLINE, line, buffer.ptr);
+wcsSize = OS.MultiByteToWideChar (cp, OS.MB_PRECOMPOSED, buffer.ptr, mbcsSize, null, 0);
+}
+if (line - 1 !is count) {
+for (int i=0; i<delimiterSize; i++) {
+buffer [mbcsSize++] = cast(byte) delimiter.charAt (i);
+}
+wcsSize += delimiterSize;
+}
+if ((wcsTotal + wcsSize) >= wcsPos) {
+wcsSize = 0;
+int index = 0;
+while (index < mbcsSize) {
+if ((wcsTotal + wcsSize) is wcsPos) {
+return mbcsTotal + index;
+}
+if (OS.IsDBCSLeadByte (buffer [index++])) index++;
+wcsSize++;
+}
+return mbcsTotal + mbcsSize;
+}
+wcsTotal += wcsSize;
+mbcsTotal += mbcsSize;
+}
+return mbcsTotal;
+}
+override int widgetStyle () {
+int bits = super.widgetStyle () | OS.ES_AUTOHSCROLL;
+if ((style & SWT.PASSWORD) !is 0) bits |= OS.ES_PASSWORD;
+if ((style & SWT.CENTER) !is 0) bits |= OS.ES_CENTER;
+if ((style & SWT.RIGHT) !is 0) bits |= OS.ES_RIGHT;
+if ((style & SWT.READ_ONLY) !is 0) bits |= OS.ES_READONLY;
+if ((style & SWT.SINGLE) !is 0) {
+/*
+* Feature in Windows.  When a text control is read-only,
+* uses COLOR_3DFACE for the background .  If the text
+* controls single-line and is within a tab folder or
+* some other themed control, using WM_ERASEBKGND and
+* WM_CTRCOLOR to draw the theme background results in
+* pixel corruption.  The fix is to use an ES_MULTILINE
+* text control instead.
+*/
+if ((style & SWT.READ_ONLY) !is 0) {
+if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) is 0) {
+if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
+bits |= OS.ES_MULTILINE;
+}
+}
+}
+return bits;
+}
+bits |= OS.ES_MULTILINE | OS.ES_NOHIDESEL | OS.ES_AUTOVSCROLL;
+if ((style & SWT.WRAP) !is 0) bits &= ~(OS.WS_HSCROLL | OS.ES_AUTOHSCROLL);
+return bits;
+}
+override String windowClass () {
+return TCHARsToStr(EditClass);
+}
+override int windowProc () {
+return cast(int)EditProc;
+}
+override int windowProc (HWND hwnd, int msg, int wParam, int lParam) {
+if (msg is OS.EM_UNDO) {
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((bits & OS.ES_MULTILINE) is 0) {
+LRESULT result = wmClipboard (OS.EM_UNDO, wParam, lParam);
+if (result !is null) return result.value;
+return callWindowProc (hwnd, OS.EM_UNDO, wParam, lParam);
+}
+}
+if (msg is Display.SWT_RESTORECARET) {
+callWindowProc (hwnd, OS.WM_KILLFOCUS, 0, 0);
+callWindowProc (hwnd, OS.WM_SETFOCUS, 0, 0);
+return 1;
+}
+return super.windowProc (hwnd, msg, wParam, lParam);
+}
+override LRESULT WM_CHAR (int wParam, int lParam) {
+if (ignoreCharacter) return null;
+LRESULT result = super.WM_CHAR (wParam, lParam);
+if (result !is null) return result;
+/*
+* Bug in Windows.  When the user types CTRL and BS
+* in an edit control, a DEL character is generated.
+* Rather than deleting the text, the DEL character
+* is inserted into the control.  The fix is to detect
+* this case and not call the window proc.
+*/
+switch (wParam) {
+case SWT.DEL:
+if (OS.GetKeyState (OS.VK_CONTROL) < 0) {
+return LRESULT.ZERO;
+}
+default:
+}
+/*
+* Feature in Windows.  For some reason, when the
+* widget is a single line text widget, when the
+* user presses tab, return or escape, Windows beeps.
+* The fix is to look for these keys and not call
+* the window proc.
+*/
+if ((style & SWT.SINGLE) !is 0) {
+switch (wParam) {
+case SWT.CR:
+postEvent (SWT.DefaultSelection);
+// FALL THROUGH
+case SWT.TAB:
+case SWT.ESC: return LRESULT.ZERO;
+default:
+}
+}
+return result;
+}
+override LRESULT WM_CLEAR (int wParam, int lParam) {
+LRESULT result = super.WM_CLEAR (wParam, lParam);
+if (result !is null) return result;
+return wmClipboard (OS.WM_CLEAR, wParam, lParam);
+}
+override LRESULT WM_CUT (int wParam, int lParam) {
+LRESULT result = super.WM_CUT (wParam, lParam);
+if (result !is null) return result;
+return wmClipboard (OS.WM_CUT, wParam, lParam);
+}
+override LRESULT WM_ERASEBKGND (int wParam, int lParam) {
+LRESULT result = super.WM_ERASEBKGND (wParam, lParam);
+if ((style & SWT.READ_ONLY) !is 0) {
+if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) is 0) {
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((bits & OS.ES_MULTILINE) !is 0) {
+Control control = findBackgroundControl ();
+if (control is null && background is -1) {
+if ((state & THEME_BACKGROUND) !is 0) {
+if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
+control = findThemeControl ();
+if (control !is null) {
+RECT rect;
+OS.GetClientRect (handle, &rect);
+fillThemeBackground (cast(HANDLE)wParam, control, &rect);
+return LRESULT.ONE;
+}
+}
+}
+}
+}
+}
+}
+return result;
+}
+override LRESULT WM_GETDLGCODE (int wParam, int lParam) {
+LRESULT result = super.WM_GETDLGCODE (wParam, lParam);
+if (result !is null) return result;
+/*
+* Bug in WinCE PPC.  For some reason, sending WM_GETDLGCODE
+* to a multi-line edit control causes it to ignore return and
+* tab keys.  The fix is to return the value which is normally
+* returned by the text window proc on other versions of Windows.
+*/
+if (OS.IsPPC) {
+if ((style & SWT.MULTI) !is 0 && (style & SWT.READ_ONLY) is 0 && lParam is 0) {
+return new LRESULT (OS.DLGC_HASSETSEL | OS.DLGC_WANTALLKEYS | OS.DLGC_WANTCHARS);
+}
+}
+/*
+* Feature in Windows.  Despite the fact that the
+* edit control is read only, it still returns a
+* dialog code indicating that it wants all keys.
+* The fix is to detect this case and clear the bits.
+*
+* NOTE: A read only edit control processes arrow keys
+* so DLGC_WANTARROWS should not be cleared.
+*/
+if ((style & SWT.READ_ONLY) !is 0) {
+int /*long*/ code = callWindowProc (handle, OS.WM_GETDLGCODE, wParam, lParam);
+code &= ~(OS.DLGC_WANTALLKEYS | OS.DLGC_WANTTAB);
+return new LRESULT (code);
+}
+return null;
+}
+override LRESULT WM_IME_CHAR (int wParam, int lParam) {
+/* Process a DBCS character */
+Display display = this.display;
+display.lastKey = 0;
+display.lastAscii = wParam;
+display.lastVirtual = display.lastNull = display.lastDead = false;
+if (!sendKeyEvent (SWT.KeyDown, OS.WM_IME_CHAR, wParam, lParam)) {
+return LRESULT.ZERO;
+}
+/*
+* Feature in Windows.  The Windows text widget uses
+* two 2 WM_CHAR's to process a DBCS key instead of
+* using WM_IME_CHAR.  The fix is to allow the text
+* widget to get the WM_CHAR's but ignore sending
+* them to the application.
+*/
+ignoreCharacter = true;
+int /*long*/ result = callWindowProc (handle, OS.WM_IME_CHAR, wParam, lParam);
+MSG msg;
+int flags = OS.PM_REMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE;
+while (OS.PeekMessage (&msg, handle, OS.WM_CHAR, OS.WM_CHAR, flags)) {
+OS.TranslateMessage (&msg);
+OS.DispatchMessage (&msg);
+}
+ignoreCharacter = false;
+sendKeyEvent (SWT.KeyUp, OS.WM_IME_CHAR, wParam, lParam);
+// widget could be disposed at this point
+display.lastKey = display.lastAscii = 0;
+return new LRESULT (result);
+}
+override LRESULT WM_LBUTTONDBLCLK (int wParam, int lParam) {
+/*
+* Prevent Windows from processing WM_LBUTTONDBLCLK
+* when double clicking behavior is disabled by not
+* calling the window proc.
+*/
+LRESULT result = null;
+sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
+if (!sendMouseEvent (SWT.MouseDoubleClick, 1, handle, OS.WM_LBUTTONDBLCLK, wParam, lParam)) {
+result = LRESULT.ZERO;
+}
+if (!display.captureChanged && !isDisposed ()) {
+if (OS.GetCapture () !is handle) OS.SetCapture (handle);
+}
+if (!doubleClick) return LRESULT.ZERO;
+/*
+* Bug in Windows.  When the last line of text in the
+* widget is double clicked and the line is empty, Windows
+* hides the i-beam then moves it to the first line in
+* the widget but does not scroll to show the user.
+* If the user types without clicking the mouse, invalid
+* characters are displayed at the end of each line of
+* text in the widget.  The fix is to detect this case
+* and avoid calling the window proc.
+*/
+int start, end;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (start  is end ) {
+int length = OS.GetWindowTextLength (handle);
+if (length is start) {
+int code = OS.SendMessage (handle, OS.EM_LINELENGTH, length, 0);
+if (code is 0) return LRESULT.ZERO;
+}
+}
+return result;
+}
+override LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
+static if( OS.IsWinCE )
+if (OS.IsPPC) {
+LRESULT result = null;
+Display display = this.display;
+display.captureChanged = false;
+bool dispatch = sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
+/*
+* Note: On WinCE PPC, only attempt to recognize the gesture for
+* a context menu when the control contains a valid menu or there
+* are listeners for the MenuDetect event.
+*
+* Note: On WinCE PPC, the gesture that brings up a popup menu
+* on the text widget must keep the current text selection.  As a
+* result, the window proc is only called if the menu is not shown.
+*/
+bool hasMenu = menu !is null && !menu.isDisposed ();
+if (hasMenu || hooks (SWT.MenuDetect)) {
+int x = OS.GET_X_LPARAM (lParam);
+int y = OS.GET_Y_LPARAM (lParam);
+SHRGINFO shrg;
+shrg.cbSize = SHRGINFO.sizeof;
+shrg.hwndClient = handle;
+shrg.ptDown.x = x;
+shrg.ptDown.y = y;
+shrg.dwFlags = OS.SHRG_RETURNCMD;
+int type = OS.SHRecognizeGesture (&shrg);
+if (type is OS.GN_CONTEXTMENU) {
+showMenu (x, y);
+return LRESULT.ONE;
+}
+}
+if (dispatch) {
+result = new LRESULT (callWindowProc (handle, OS.WM_LBUTTONDOWN, wParam, lParam));
+} else {
+result = LRESULT.ZERO;
+}
+if (!display.captureChanged && !isDisposed ()) {
+if (OS.GetCapture () !is handle) OS.SetCapture (handle);
+}
+return result;
+}
+return super.WM_LBUTTONDOWN (wParam, lParam);
+}
+override LRESULT WM_PASTE (int wParam, int lParam) {
+LRESULT result = super.WM_PASTE (wParam, lParam);
+if (result !is null) return result;
+return wmClipboard (OS.WM_PASTE, wParam, lParam);
+}
+override LRESULT WM_UNDO (int wParam, int lParam) {
+LRESULT result = super.WM_UNDO (wParam, lParam);
+if (result !is null) return result;
+return wmClipboard (OS.WM_UNDO, wParam, lParam);
+}
+LRESULT wmClipboard (int msg, int /*long*/ wParam, int /*long*/ lParam) {
+if ((style & SWT.READ_ONLY) !is 0) return null;
+if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return null;
+bool call = false;
+int start, end;
+String newText = null;
+switch (msg) {
+case OS.WM_CLEAR:
+case OS.WM_CUT:
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+if (start !is end ) {
+newText = "";
+call = true;
+}
+break;
+case OS.WM_PASTE:
+OS.SendMessage (handle, OS.EM_GETSEL, start, end);
+newText = getClipboardText ();
+break;
+case OS.EM_UNDO:
+case OS.WM_UNDO:
+if (OS.SendMessage (handle, OS.EM_CANUNDO, 0, 0) !is 0) {
+ignoreModify = ignoreCharacter = true;
+OS.SendMessage (handle, OS.EM_GETSEL, &start, &end);
+callWindowProc (handle, msg, wParam, lParam);
+int length = OS.GetWindowTextLength (handle);
+int newStart, newEnd;
+OS.SendMessage (handle, OS.EM_GETSEL, &newStart, &newEnd);
+if (length !is 0 && newStart !is newEnd) {
+TCHAR[] buffer = NewTCHARs (getCodePage (), length + 1);
+OS.GetWindowText (handle, buffer.ptr, length + 1);
+newText = TCHARsToStr( buffer[ newStart .. newEnd ] );
+} else {
+newText = "";
+}
+callWindowProc (handle, msg, wParam, lParam);
+ignoreModify = ignoreCharacter = false;
+}
+break;
+default:
+}
+if (newText !is null) {
+String oldText = newText;
+newText = verifyText (newText, start, end, null);
+if (newText is null) return LRESULT.ZERO;
+if (newText !=/*eq*/oldText) {
+if (call) {
+callWindowProc (handle, msg, wParam, lParam);
+}
+newText = Display.withCrLf (newText);
+TCHAR* buffer = StrToTCHARz(getCodePage (), newText);
+/*
+* Feature in Windows.  When an edit control with ES_MULTILINE
+* style that does not have the WS_VSCROLL style is full (i.e.
+* there is no space at the end to draw any more characters),
+* EM_REPLACESEL sends a WM_CHAR with a backspace character
+* to remove any further text that is added.  This is an
+* implementation detail of the edit control that is unexpected
+* and can cause endless recursion when EM_REPLACESEL is sent
+* from a WM_CHAR handler.  The fix is to ignore calling the
+* handler from WM_CHAR.
+*/
+ignoreCharacter = true;
+OS.SendMessage (handle, OS.EM_REPLACESEL, 0, buffer);
+ignoreCharacter = false;
+return LRESULT.ZERO;
+}
+}
+if (msg is OS.WM_UNDO) {
+ignoreVerify = ignoreCharacter = true;
+callWindowProc (handle, OS.WM_UNDO, wParam, lParam);
+ignoreVerify = ignoreCharacter = false;
+return LRESULT.ONE;
+}
+return null;
+}
+override LRESULT wmColorChild (int wParam, int lParam) {
+if ((style & SWT.READ_ONLY) !is 0) {
+if ((style & (SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL)) is 0) {
+int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+if ((bits & OS.ES_MULTILINE) !is 0) {
+Control control = findBackgroundControl ();
+if (control is null && background is -1) {
+if ((state & THEME_BACKGROUND) !is 0) {
+if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
+control = findThemeControl ();
+if (control !is null) {
+OS.SetTextColor (cast(HANDLE) wParam, getForegroundPixel ());
+OS.SetBkColor (cast(HANDLE) wParam, getBackgroundPixel ());
+OS.SetBkMode (cast(HANDLE) wParam, OS.TRANSPARENT);
+return new LRESULT ( cast(int) OS.GetStockObject (OS.NULL_BRUSH));
+}
+}
+}
+}
+}
+}
+}
+return super.wmColorChild (wParam, lParam);
+}
+override LRESULT wmCommandChild (int wParam, int lParam) {
+int code = OS.HIWORD (wParam);
+switch (code) {
+case OS.EN_CHANGE:
+if (findImageControl () !is null) {
+OS.InvalidateRect (handle, null, true);
+}
+if (ignoreModify) break;
+/*
+* It is possible (but unlikely), that application
+* code could have disposed the widget in the modify
+* event.  If this happens, end the processing of the
+* Windows message by returning zero as the result of
+* the window proc.
+*/
+sendEvent (SWT.Modify);
+if (isDisposed ()) return LRESULT.ZERO;
+break;
+case OS.EN_ALIGN_LTR_EC:
+style &= ~SWT.RIGHT_TO_LEFT;
+style |= SWT.LEFT_TO_RIGHT;
+fixAlignment ();
+break;
+case OS.EN_ALIGN_RTL_EC:
+style &= ~SWT.LEFT_TO_RIGHT;
+style |= SWT.RIGHT_TO_LEFT;
+fixAlignment ();
+break;
+default:
+}
+return super.wmCommandChild (wParam, lParam);
+}
+}

Mercurial > projects > dwt2

comparison org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/widgets/Text.d @ 0:6dd524f61e62