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changeset 35:99d8b02576c3

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Control
author Frank Benoit <benoit@tionex.de>
date Tue, 29 Jan 2008 00:16:12 +0100
parents 943a86053d88
children ceb20ad6c0f8
files dwt/accessibility/Accessible.d dwt/internal/win32/OS.d dwt/widgets/Composite.d dwt/widgets/Control.d dwt/widgets/Decorations.d dwt/widgets/Display.d dwt/widgets/Menu.d dwt/widgets/MenuItem.d dwt/widgets/Shell.d dwt/widgets/Widget.d
diffstat 10 files changed, 382 insertions(+), 342 deletions(-) [+]
line wrap: on
line diff
--- a/dwt/accessibility/Accessible.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/accessibility/Accessible.d	Tue Jan 29 00:16:12 2008 +0100
@@ -12,8 +12,12 @@
  *******************************************************************************/
 module dwt.accessibility.Accessible;
 
+import dwt.widgets.Control;
 //PORTING_TYPE
 public class Accessible {
+    public static Accessible internal_new_Accessible(Control control) ;
+    public void internal_dispose_Accessible() ;
+    public int /*long*/ internal_WM_GETOBJECT (int /*long*/ wParam, int /*long*/ lParam) ;
 }
 
 /++
--- a/dwt/internal/win32/OS.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/internal/win32/OS.d	Tue Jan 29 00:16:12 2008 +0100
@@ -4474,6 +4474,7 @@
 alias WINAPI.SetActiveWindow SetActiveWindow;
 alias WINAPI.SetBkColor SetBkColor;
 alias WINAPI.SetBkMode SetBkMode;
+alias STDWIN.SetBrushOrgEx SetBrushOrgEx;
 alias WINAPI.SetCapture SetCapture;
 alias WINAPI.SetCaretPos SetCaretPos;
 alias WINAPI.SetClipboardData SetClipboardData;
--- a/dwt/widgets/Composite.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Composite.d	Tue Jan 29 00:16:12 2008 +0100
@@ -14,15 +14,26 @@
 
 import dwt.widgets.Scrollable;
 import dwt.widgets.Control;
+import dwt.widgets.Layout;
 import dwt.graphics.Font;
+import dwt.internal.win32.OS;
 
 class Composite : Scrollable {
+    Layout layout_;
+    int font;
+    WINDOWPOS* [] lpwp;
+    Control [] tabList;
+    int layoutCount, backgroundMode;
+
 public Control [] getChildren () ;
 void updateFont (Font oldFont, Font newFont) ;
 public void layout () ;
 public void layout (bool ) ;
 public void layout (bool , bool ) ;
 public void layout (Control[]) ;
+Control [] _getTabList () ;
+void removeControl (Control control) ;
+Control [] _getChildren () ;
 }
 /++
 import dwt.DWT;
@@ -33,18 +44,7 @@
 import dwt.graphics.Image;
 import dwt.graphics.Point;
 import dwt.graphics.Rectangle;
-import dwt.internal.Callback;
-import dwt.internal.win32.LRESULT;
-import dwt.internal.win32.MSG;
-import dwt.internal.win32.NMHDR;
-import dwt.internal.win32.NMTTDISPINFO;
-import dwt.internal.win32.NMTTDISPINFOA;
-import dwt.internal.win32.NMTTDISPINFOW;
 import dwt.internal.win32.OS;
-import dwt.internal.win32.PAINTSTRUCT;
-import dwt.internal.win32.POINT;
-import dwt.internal.win32.RECT;
-import dwt.internal.win32.WINDOWPOS;
 
 /**
  * Instances of this class are controls which are capable
@@ -79,7 +79,7 @@
 public class Composite extends Scrollable {
     Layout layout;
     int font;
-    WINDOWPOS [] lpwp;
+    WINDOWPOS* [] lpwp;
     Control [] tabList;
     int layoutCount, backgroundMode;
 
--- a/dwt/widgets/Control.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Control.d	Tue Jan 29 00:16:12 2008 +0100
@@ -82,6 +82,15 @@
 import dwt.widgets.Composite;
 import dwt.widgets.Event;
 import dwt.widgets.Shell;
+import dwt.widgets.Menu;
+import dwt.widgets.MenuItem;
+import dwt.widgets.Decorations;
+import dwt.widgets.TypedListener;
+import dwt.widgets.Listener;
+import dwt.widgets.Display;
+
+import dwt.dwthelper.utils;
+import dwt.dwthelper.System;
 
 /**
  * Control is the abstract superclass of all windowed user interface classes.
@@ -103,6 +112,9 @@
  */
 
 public abstract class Control : Widget, Drawable {
+
+    alias Widget.dragDetect dragDetect;
+
     /**
      * the handle to the OS resource
      * (Warning: This field is platform dependent)
@@ -499,7 +511,7 @@
     addListener (DWT.Traverse,typedListener);
 }
 
-int borderHandle () {
+HANDLE borderHandle () {
     return handle;
 }
 
@@ -509,7 +521,7 @@
     state &= ~PARENT_BACKGROUND;
     Composite composite = parent;
     do {
-        int mode = composite.backgroundMode;
+        auto mode = composite.backgroundMode;
         if (mode !is 0) {
             if (mode is DWT.INHERIT_DEFAULT) {
                 Control control = this;
@@ -536,7 +548,7 @@
     style &= ~DWT.DOUBLE_BUFFERED;
 }
 
-bool checkHandle (int hwnd) {
+bool checkHandle (HWND hwnd) {
     return hwnd is handle;
 }
 
@@ -668,9 +680,9 @@
     if (handle is null) error (DWT.ERROR_NO_HANDLES);
     int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
     if ((bits & OS.WS_CHILD) !is 0) {
-        OS.SetWindowLong (handle, OS.GWL_ID, handle);
+        OS.SetWindowLong (handle, OS.GWL_ID, cast(int)handle);
     }
-    if (OS.IsDBLocale && hwndParent !is 0) {
+    if (OS.IsDBLocale && hwndParent !is null) {
         auto hIMC = OS.ImmGetContext (hwndParent);
         OS.ImmAssociateContext (handle, hIMC);
         OS.ImmReleaseContext (hwndParent, hIMC);
@@ -848,17 +860,17 @@
     return sendDragEvent (button, stateMask, x, y);
 }
 
-void drawBackground (int hDC) {
-    RECT rect = new RECT ();
-    OS.GetClientRect (handle, rect);
-    drawBackground (hDC, rect);
-}
-
-void drawBackground (int hDC, RECT rect) {
+void drawBackground (HDC hDC) {
+    RECT rect;
+    OS.GetClientRect (handle, &rect);
+    drawBackground (hDC, &rect);
+}
+
+void drawBackground (HDC hDC, RECT* rect) {
     drawBackground (hDC, rect, -1);
 }
 
-void drawBackground (int hDC, RECT rect, int pixel) {
+void drawBackground (HDC hDC, RECT* rect, int pixel) {
     Control control = findBackgroundControl ();
     if (control !is null) {
         if (control.backgroundImage !is null) {
@@ -882,21 +894,21 @@
     fillBackground (hDC, pixel, rect);
 }
 
-void drawImageBackground (int hDC, int hwnd, int hBitmap, RECT rect) {
-    RECT rect2 = new RECT ();
-    OS.GetClientRect (hwnd, rect2);
-    OS.MapWindowPoints (hwnd, handle, rect2, 2);
-    int hBrush = findBrush (hBitmap, OS.BS_PATTERN);
-    POINT lpPoint = new POINT ();
-    OS.GetWindowOrgEx (hDC, lpPoint);
-    OS.SetBrushOrgEx (hDC, -rect2.left - lpPoint.x, -rect2.top - lpPoint.y, lpPoint);
-    int hOldBrush = OS.SelectObject (hDC, hBrush);
+void drawImageBackground (HDC hDC, HWND hwnd, HBITMAP hBitmap, RECT* rect) {
+    RECT rect2;
+    OS.GetClientRect (hwnd, &rect2);
+    OS.MapWindowPoints (hwnd, handle, cast(POINT*)&rect2, 2);
+    auto hBrush = findBrush ( cast(int)hBitmap, OS.BS_PATTERN);
+    POINT lpPoint;
+    OS.GetWindowOrgEx (hDC, &lpPoint);
+    OS.SetBrushOrgEx (hDC, -rect2.left - lpPoint.x, -rect2.top - lpPoint.y, &lpPoint);
+    auto hOldBrush = OS.SelectObject (hDC, hBrush);
     OS.PatBlt (hDC, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
     OS.SetBrushOrgEx (hDC, lpPoint.x, lpPoint.y, null);
     OS.SelectObject (hDC, hOldBrush);
 }
 
-void drawThemeBackground (int hDC, int hwnd, RECT rect) {
+void drawThemeBackground (HDC hDC, HWND hwnd, RECT* rect) {
     /* Do nothing */
 }
 
@@ -908,17 +920,17 @@
     OS.EnableWindow (handle, enabled);
 }
 
-void fillBackground (int hDC, int pixel, RECT rect) {
+void fillBackground (HDC hDC, int pixel, RECT* rect) {
     if (rect.left > rect.right || rect.top > rect.bottom) return;
-    int hPalette = display.hPalette;
-    if (hPalette !is 0) {
+    auto hPalette = display.hPalette;
+    if (hPalette !is null) {
         OS.SelectPalette (hDC, hPalette, false);
         OS.RealizePalette (hDC);
     }
     OS.FillRect (hDC, rect, findBrush (pixel, OS.BS_SOLID));
 }
 
-void fillImageBackground (int hDC, Control control, RECT rect) {
+void fillImageBackground (HDC hDC, Control control, RECT* rect) {
     if (rect.left > rect.right || rect.top > rect.bottom) return;
     if (control !is null) {
         Image image = control.backgroundImage;
@@ -928,7 +940,7 @@
     }
 }
 
-void fillThemeBackground (int hDC, Control control, RECT rect) {
+void fillThemeBackground (HDC hDC, Control control, RECT* rect) {
     if (rect.left > rect.right || rect.top > rect.bottom) return;
     if (control !is null) {
         control.drawThemeBackground (hDC, handle, rect);
@@ -940,7 +952,7 @@
     return (state & PARENT_BACKGROUND) !is 0 ? parent.findBackgroundControl () : null;
 }
 
-int findBrush (int value, int lbStyle) {
+HBRUSH findBrush (int value, int lbStyle) {
     return parent.findBrush (value, lbStyle);
 }
 
@@ -965,13 +977,13 @@
 
 char findMnemonic (char[] string) {
     int index = 0;
-    int length = string.length;
+    int length_ = string.length;
     do {
-        while (index < length && string.charAt (index) !is '&') index++;
-        if (++index >= length) return '\0';
+        while (index < length_ && string.charAt (index) !is '&') index++;
+        if (++index >= length_) return '\0';
         if (string.charAt (index) !is '&') return string.charAt (index);
         index++;
-    } while (index < length);
+    } while (index < length_);
     return '\0';
 }
 
@@ -987,7 +999,7 @@
         if (control.setFixedFocus ()) return;
     }
     shell.setSavedFocus (focusControl);
-    OS.SetFocus (0);
+    OS.SetFocus (null);
 }
 
 /**
@@ -1156,10 +1168,10 @@
 public Rectangle getBounds () {
     checkWidget ();
     forceResize ();
-    RECT rect = new RECT ();
-    OS.GetWindowRect (topHandle (), rect);
-    auto hwndParent = parent is null ? 0 : parent.handle;
-    OS.MapWindowPoints (0, hwndParent, rect, 2);
+    RECT rect;
+    OS.GetWindowRect (topHandle (), &rect);
+    auto hwndParent = parent is null ? null : parent.handle;
+    OS.MapWindowPoints (null, hwndParent, cast(POINT*)&rect, 2);
     int width = rect.right - rect.left;
     int height =  rect.bottom - rect.top;
     return new Rectangle (rect.left, rect.top, width, height);
@@ -1167,12 +1179,12 @@
 
 int getCodePage () {
     if (OS.IsUnicode) return OS.CP_ACP;
-    auto hFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+    auto hFont = cast(HFONT) OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
     LOGFONT logFont;
     OS.GetObject (hFont, LOGFONT.sizeof, &logFont);
     int cs = logFont.lfCharSet & 0xFF;
     int [] lpCs = new int [8];
-    if (OS.TranslateCharsetInfo (cs, lpCs, OS.TCI_SRCCHARSET)) {
+    if (OS.TranslateCharsetInfo (cast(uint*)cs, cast(CHARSETINFO*)lpCs.ptr, OS.TCI_SRCCHARSET)) {
         return lpCs [1];
     }
     return OS.GetACP ();
@@ -1180,17 +1192,15 @@
 
 char[] getClipboardText () {
     char[] string = "";
-    if (OS.OpenClipboard (0)) {
-        int hMem = OS.GetClipboardData (OS.IsUnicode ? OS.CF_UNICODETEXT : OS.CF_TEXT);
-        if (hMem !is 0) {
+    if (OS.OpenClipboard (null)) {
+        auto hMem = OS.GetClipboardData (OS.IsUnicode ? OS.CF_UNICODETEXT : OS.CF_TEXT);
+        if (hMem !is null) {
             /* Ensure byteCount is a multiple of 2 bytes on UNICODE platforms */
             int byteCount = OS.GlobalSize (hMem) / TCHAR.sizeof * TCHAR.sizeof;
-            int ptr = OS.GlobalLock (hMem);
-            if (ptr !is 0) {
+            auto ptr = OS.GlobalLock (hMem);
+            if (ptr !is null) {
                 /* Use the character encoding for the default locale */
-                TCHAR buffer = new TCHAR (0, byteCount / TCHAR.sizeof);
-                OS.MoveMemory (buffer, ptr, byteCount);
-                string = buffer.toString (0, buffer.strlen ());
+                string = TCHARzToStr( cast(TCHAR*)ptr );
                 OS.GlobalUnlock (hMem);
             }
         }
@@ -1253,7 +1263,7 @@
  */
 public bool getEnabled () {
     checkWidget ();
-    return OS.IsWindowEnabled (handle);
+    return cast(bool)OS.IsWindowEnabled (handle);
 }
 
 /**
@@ -1268,7 +1278,7 @@
  */
 public Font getFont () {
     checkWidget ();
-    auto hFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+    auto hFont = cast(HFONT)OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
     if (hFont is null) hFont = defaultFont ();
     return Font.win32_new (display, hFont);
 }
@@ -1325,8 +1335,8 @@
     forceResize ();
     RECT rect;
     OS.GetWindowRect (topHandle (), &rect);
-    int hwndParent = parent is null ? 0 : parent.handle;
-    OS.MapWindowPoints (0, hwndParent, &rect, 2);
+    auto hwndParent = parent is null ? null : parent.handle;
+    OS.MapWindowPoints (null, hwndParent, cast(POINT*)&rect, 2);
     return new Point (rect.left, rect.top);
 }
 
@@ -1357,7 +1367,7 @@
  *
  * @since 3.0
  */
-public Monitor getMonitor () {
+public dwt.widgets.Monitor.Monitor getMonitor () {
     checkWidget ();
     if (OS.IsWinCE || OS.WIN32_VERSION < OS.VERSION (4, 10)) {
         return display.getPrimaryMonitor ();
@@ -1374,8 +1384,8 @@
     monitor.height = lpmi.rcMonitor.bottom - lpmi.rcMonitor.top;
     monitor.clientX = lpmi.rcWork.left;
     monitor.clientY = lpmi.rcWork.top;
-    monitor.clientWidth = lpmi.rcWork_right - lpmi.rcWork.left;
-    monitor.clientHeight = lpmi.rcWork_bottom - lpmi.rcWork.top;
+    monitor.clientWidth = lpmi.rcWork.right - lpmi.rcWork.left;
+    monitor.clientHeight = lpmi.rcWork.bottom - lpmi.rcWork.top;
     return monitor;
 }
 
@@ -1499,9 +1509,9 @@
 bool hasCursor () {
     RECT rect;
     if (!OS.GetClientRect (handle, &rect)) return false;
-    OS.MapWindowPoints (handle, 0, &rect, 2);
+    OS.MapWindowPoints (handle, null, cast(POINT*)&rect, 2);
     POINT pt;
-    return OS.GetCursorPos (pt) && OS.PtInRect (&rect, pt);
+    return OS.GetCursorPos (&pt) && OS.PtInRect (&rect, pt);
 }
 
 bool hasFocus () {
@@ -1569,7 +1579,7 @@
         if (control is null) control = this;
         auto background = control.getBackgroundPixel ();
         if (background !is OS.GetBkColor (hDC)) data.background = background;
-        data.hFont = OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0);
+        data.hFont = cast(HFONT) OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0);
         data.uiState = OS.SendMessage (hwnd, OS.WM_QUERYUISTATE, 0, 0);
     }
     return hDC;
@@ -1772,12 +1782,12 @@
     return getVisible () && parent.isVisible ();
 }
 
-void mapEvent (int hwnd, Event event) {
+void mapEvent (HWND hwnd, Event event) {
     if (hwnd !is handle) {
-        POINT point = new POINT ();
+        POINT point;
         point.x = event.x;
         point.y = event.y;
-        OS.MapWindowPoints (hwnd, handle, point, 1);
+        OS.MapWindowPoints (hwnd, handle, &point, 1);
         event.x = point.x;
         event.y = point.y;
     }
@@ -1821,12 +1831,13 @@
  */
 public void moveAbove (Control control) {
     checkWidget ();
-    int topHandle = topHandle (), hwndAbove = OS.HWND_TOP;
+    auto topHandle_ = topHandle ();
+    HWND hwndAbove = cast(HWND) OS.HWND_TOP;
     if (control !is null) {
         if (control.isDisposed ()) error(DWT.ERROR_INVALID_ARGUMENT);
         if (parent !is control.parent) return;
-        int hwnd = control.topHandle ();
-        if (hwnd is null || hwnd is topHandle) return;
+        auto hwnd = control.topHandle ();
+        if (hwnd is null || hwnd is topHandle_) return;
         hwndAbove = OS.GetWindow (hwnd, OS.GW_HWNDPREV);
         /*
         * Bug in Windows.  For some reason, when GetWindow ()
@@ -1836,11 +1847,11 @@
         * this case and move the control to the top.
         */
         if (hwndAbove is null || hwndAbove is hwnd) {
-            hwndAbove = OS.HWND_TOP;
+            hwndAbove = cast(HWND) OS.HWND_TOP;
         }
     }
     int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE;
-    SetWindowPos (topHandle, hwndAbove, 0, 0, 0, 0, flags);
+    SetWindowPos (topHandle_, hwndAbove, 0, 0, 0, 0, flags);
 }
 
 /**
@@ -1865,8 +1876,8 @@
  */
 public void moveBelow (Control control) {
     checkWidget ();
-    auto topHandle = topHandle ();
-    int hwndAbove = OS.HWND_BOTTOM;
+    auto topHandle_ = topHandle ();
+    HWND hwndAbove = cast(HWND)OS.HWND_BOTTOM;
     if (control !is null) {
         if (control.isDisposed ()) error(DWT.ERROR_INVALID_ARGUMENT);
         if (parent !is control.parent) return;
@@ -1890,18 +1901,19 @@
             * this case and do nothing because the control is already
             * at the bottom.
             */
-            int hwndParent = parent.handle, hwnd = hwndParent;
+            auto hwndParent = parent.handle;
+            auto hwnd = hwndParent;
             hwndAbove = OS.GetWindow (hwnd, OS.GW_HWNDPREV);
-            while (hwndAbove !is 0 && hwndAbove !is hwnd) {
+            while (hwndAbove !is null && hwndAbove !is hwnd) {
                 if (OS.GetWindow (hwndAbove, OS.GW_OWNER) is hwndParent) break;
                 hwndAbove = OS.GetWindow (hwnd = hwndAbove, OS.GW_HWNDPREV);
             }
             if (hwndAbove is hwnd) return;
         }
     }
-    if (hwndAbove is 0 || hwndAbove is topHandle) return;
+    if (hwndAbove is null || hwndAbove is topHandle_) return;
     int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE;
-    SetWindowPos (topHandle, hwndAbove, 0, 0, 0, 0, flags);
+    SetWindowPos (topHandle_, hwndAbove, 0, 0, 0, 0, flags);
 }
 
 Accessible new_Accessible (Control control) {
@@ -1987,7 +1999,7 @@
     } else {
         int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
         if (all) flags |= OS.RDW_ALLCHILDREN;
-        OS.RedrawWindow (handle, null, 0, flags);
+        OS.RedrawWindow (handle, null, null, flags);
     }
 }
 /**
@@ -2024,14 +2036,14 @@
     checkWidget ();
     if (width <= 0 || height <= 0) return;
     if (!OS.IsWindowVisible (handle)) return;
-    RECT rect = new RECT ();
-    OS.SetRect (rect, x, y, x + width, y + height);
+    RECT rect;
+    OS.SetRect (&rect, x, y, x + width, y + height);
     if (OS.IsWinCE) {
-        OS.InvalidateRect (handle, rect, true);
+        OS.InvalidateRect (handle, &rect, true);
     } else {
         int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
         if (all) flags |= OS.RDW_ALLCHILDREN;
-        OS.RedrawWindow (handle, rect, 0, flags);
+        OS.RedrawWindow (handle, &rect, null, flags);
     }
 }
 
@@ -2060,7 +2072,7 @@
 
 void releaseHandle () {
     super.releaseHandle ();
-    handle = 0;
+    handle = null;
     parent = null;
 }
 
@@ -2071,7 +2083,7 @@
 void releaseWidget () {
     super.releaseWidget ();
     if (OS.IsDBLocale) {
-        OS.ImmAssociateContext (handle, 0);
+        OS.ImmAssociateContext (handle, null);
     }
     if (toolTipText_ !is null) {
         setToolTipText (getShell (), null);
@@ -2395,9 +2407,9 @@
 }
 
 void showWidget (bool visible) {
-    int topHandle = topHandle ();
-    OS.ShowWindow (topHandle, visible ? OS.SW_SHOW : OS.SW_HIDE);
-    if (handle !is topHandle) OS.ShowWindow (handle, visible ? OS.SW_SHOW : OS.SW_HIDE);
+    auto topHandle_ = topHandle ();
+    OS.ShowWindow (topHandle_, visible ? OS.SW_SHOW : OS.SW_HIDE);
+    if (handle !is topHandle_) OS.ShowWindow (handle, visible ? OS.SW_SHOW : OS.SW_HIDE);
 }
 
 bool sendFocusEvent (int type) {
@@ -2519,12 +2531,12 @@
     updateBackgroundImage ();
 }
 
-void setBackgroundImage (int hBitmap) {
+void setBackgroundImage (HBITMAP hBitmap) {
     if (OS.IsWinCE) {
         OS.InvalidateRect (handle, null, true);
     } else {
         int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
-        OS.RedrawWindow (handle, null, 0, flags);
+        OS.RedrawWindow (handle, null, null, flags);
     }
 }
 
@@ -2533,7 +2545,7 @@
         OS.InvalidateRect (handle, null, true);
     } else {
         int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE;
-        OS.RedrawWindow (handle, null, 0, flags);
+        OS.RedrawWindow (handle, null, null, flags);
     }
 }
 
@@ -2571,10 +2583,10 @@
 }
 
 void setBounds (int x, int y, int width, int height, int flags, bool defer) {
-    int topHandle = topHandle ();
+    auto topHandle_ = topHandle ();
     if (defer && parent !is null) {
         forceResize ();
-        if (OS.GetWindow (handle, OS.GW_CHILD) is 0) {
+        if (OS.GetWindow (handle, OS.GW_CHILD) is null) {
             if (findImageControl () !is null) {
                 flags |= OS.SWP_NOCOPYBITS;
             } else {
@@ -2583,9 +2595,9 @@
                 }
             }
         }
-        WINDOWPOS [] lpwp = parent.lpwp;
+        WINDOWPOS* [] lpwp = parent.lpwp;
         if (lpwp is null) {
-            SetWindowPos (topHandle, 0, x, y, width, height, flags);
+            SetWindowPos (topHandle_, null, x, y, width, height, flags);
         } else {
             int index = 0;
             while (index < lpwp.length) {
@@ -2593,12 +2605,12 @@
                 index ++;
             }
             if (index is lpwp.length) {
-                WINDOWPOS [] newLpwp = new WINDOWPOS [lpwp.length + 4];
-                System.arraycopy (lpwp, 0, newLpwp, 0, lpwp.length);
+                WINDOWPOS* [] newLpwp = new WINDOWPOS* [lpwp.length + 4];
+                SimpleType!(WINDOWPOS*).arraycopy (lpwp, 0, newLpwp, 0, lpwp.length);
                 parent.lpwp = lpwp = newLpwp;
             }
-            WINDOWPOS wp = new WINDOWPOS ();
-            wp.hwnd = topHandle;
+            WINDOWPOS* wp = new WINDOWPOS;
+            wp.hwnd = topHandle_;
             wp.x = x;
             wp.y = y;
             wp.cx = width;
@@ -2607,7 +2619,7 @@
             lpwp [index] = wp;
         }
     } else {
-        SetWindowPos (topHandle, 0, x, y, width, height, flags);
+        SetWindowPos (topHandle_, null, x, y, width, height, flags);
     }
 }
 
@@ -2686,20 +2698,20 @@
     checkWidget ();
     if (cursor !is null && cursor.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
     this.cursor = cursor;
-    if (OS.IsWinCE) {
+    static if (OS.IsWinCE) {
         int hCursor = cursor !is null ? cursor.handle : 0;
         OS.SetCursor (hCursor);
         return;
     }
-    int hwndCursor = OS.GetCapture ();
-    if (hwndCursor is 0) {
-        POINT pt = new POINT ();
-        if (!OS.GetCursorPos (pt)) return;
-        int hwnd = hwndCursor = OS.WindowFromPoint (pt);
-        while (hwnd !is 0 && hwnd !is handle) {
+    auto hwndCursor = OS.GetCapture ();
+    if (hwndCursor is null) {
+        POINT pt;
+        if (!OS.GetCursorPos (&pt)) return;
+        auto hwnd = hwndCursor = OS.WindowFromPoint (pt);
+        while (hwnd !is null && hwnd !is handle) {
             hwnd = OS.GetParent (hwnd);
         }
-        if (hwnd is 0) return;
+        if (hwnd is null) return;
     }
     Control control = display.getControl (hwndCursor);
     if (control is null) control = this;
@@ -2707,7 +2719,7 @@
 }
 
 void setDefaultFont () {
-    int hFont = display.getSystemFont ().handle;
+    auto hFont = display.getSystemFont ().handle;
     OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
 }
 
@@ -2758,15 +2770,15 @@
     * desktop.
     */
     Control control = null;
-    bool fixFocus = false;
+    bool fixFocus_ = false;
     if (!enabled) {
         if (display.focusEvent !is DWT.FocusOut) {
             control = display.getFocusControl ();
-            fixFocus = isFocusAncestor (control);
+            fixFocus_ = isFocusAncestor (control);
         }
     }
     enableWidget (enabled);
-    if (fixFocus) fixFocus (control);
+    if (fixFocus_) fixFocus (control);
 }
 
 bool setFixedFocus () {
@@ -2811,12 +2823,12 @@
  */
 public void setFont (Font font) {
     checkWidget ();
-    int hFont = 0;
+    HFONT hFont;
     if (font !is null) {
         if (font.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT);
         hFont = font.handle;
     }
-    if (hFont is 0) hFont = defaultFont ();
+    if (hFont is null) hFont = defaultFont ();
     OS.SendMessage (handle, OS.WM_SETFONT, hFont, 1);
 }
 
@@ -3003,28 +3015,28 @@
     }
     if (redraw) {
         if (--drawCount is 0) {
-            int topHandle = topHandle ();
-            OS.SendMessage (topHandle, OS.WM_SETREDRAW, 1, 0);
-            if (handle !is topHandle) OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
+            auto topHandle_ = topHandle ();
+            OS.SendMessage (topHandle_, OS.WM_SETREDRAW, 1, 0);
+            if (handle !is topHandle_) OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
             if ((state & HIDDEN) !is 0) {
                 state &= ~HIDDEN;
-                OS.ShowWindow (topHandle, OS.SW_HIDE);
-                if (handle !is topHandle) OS.ShowWindow (handle, OS.SW_HIDE);
+                OS.ShowWindow (topHandle_, OS.SW_HIDE);
+                if (handle !is topHandle_) OS.ShowWindow (handle, OS.SW_HIDE);
             } else {
                 if (OS.IsWinCE) {
-                    OS.InvalidateRect (topHandle, null, true);
-                    if (handle !is topHandle) OS.InvalidateRect (handle, null, true);
+                    OS.InvalidateRect (topHandle_, null, true);
+                    if (handle !is topHandle_) OS.InvalidateRect (handle, null, true);
                 } else {
                     int flags = OS.RDW_ERASE | OS.RDW_FRAME | OS.RDW_INVALIDATE | OS.RDW_ALLCHILDREN;
-                    OS.RedrawWindow (topHandle, null, 0, flags);
+                    OS.RedrawWindow (topHandle_, null, null, flags);
                 }
             }
         }
     } else {
         if (drawCount++ is 0) {
-            int topHandle = topHandle ();
-            OS.SendMessage (topHandle, OS.WM_SETREDRAW, 0, 0);
-            if (handle !is topHandle) OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
+            auto topHandle_ = topHandle ();
+            OS.SendMessage (topHandle_, OS.WM_SETREDRAW, 0, 0);
+            if (handle !is topHandle_) OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
         }
     }
 }
@@ -3146,11 +3158,11 @@
     * desktop.
     */
     Control control = null;
-    bool fixFocus = false;
+    bool fixFocus_ = false;
     if (!visible) {
         if (display.focusEvent !is DWT.FocusOut) {
             control = display.getFocusControl ();
-            fixFocus = isFocusAncestor (control);
+            fixFocus_ = isFocusAncestor (control);
         }
     }
     if (drawCount !is 0) {
@@ -3163,7 +3175,7 @@
         sendEvent (DWT.Hide);
         if (isDisposed ()) return;
     }
-    if (fixFocus) fixFocus (control);
+    if (fixFocus_) fixFocus (control);
 }
 
 void sort (int [] items) {
@@ -3184,7 +3196,7 @@
 
 void subclass () {
     int oldProc = windowProc ();
-    int newProc = display.windowProc;
+    int newProc = display.windowProc();
     if (oldProc is newProc) return;
     OS.SetWindowLong (handle, OS.GWL_WNDPROC, newProc);
 }
@@ -3207,9 +3219,9 @@
  */
 public Point toControl (int x, int y) {
     checkWidget ();
-    POINT pt = new POINT ();
+    POINT pt;
     pt.x = x;  pt.y = y;
-    OS.ScreenToClient (handle, pt);
+    OS.ScreenToClient (handle, &pt);
     return new Point (pt.x, pt.y);
 }
 
@@ -3253,9 +3265,9 @@
  */
 public Point toDisplay (int x, int y) {
     checkWidget ();
-    POINT pt = new POINT ();
+    POINT pt;
     pt.x = x;  pt.y = y;
-    OS.ClientToScreen (handle, pt);
+    OS.ClientToScreen (handle, &pt);
     return new Point (pt.x, pt.y);
 }
 
@@ -3281,7 +3293,7 @@
     return toDisplay (point.x, point.y);
 }
 
-int topHandle () {
+HANDLE topHandle () {
     return handle;
 }
 
@@ -3298,7 +3310,7 @@
 
 bool translateMnemonic (MSG* msg) {
     if (msg.wParam < 0x20) return false;
-    int hwnd = msg.hwnd;
+    auto hwnd = msg.hwnd;
     if (OS.GetKeyState (OS.VK_MENU) >= 0) {
         int code = OS.SendMessage (hwnd, OS.WM_GETDLGCODE, 0, 0);
         if ((code & OS.DLGC_WANTALLKEYS) !is 0) return false;
@@ -3318,7 +3330,7 @@
 }
 
 bool translateTraversal (MSG* msg) {
-    int hwnd = msg.hwnd;
+    auto hwnd = msg.hwnd;
     int key = msg.wParam;
     if (key is OS.VK_MENU) {
         OS.SendMessage (hwnd, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
@@ -3390,7 +3402,7 @@
             * using the VK_UP and VK_DOWN keys, not with VK_LEFT
             * or VK_RIGHT.
             */
-            if (OS.IsSP) {
+            if (OS.IsSP_) {
                 if (key is OS.VK_LEFT || key is OS.VK_RIGHT) return false;
             }
             lastVirtual = true;
@@ -3601,7 +3613,7 @@
     } else {
         int flags = OS.RDW_UPDATENOW;
         if (all) flags |= OS.RDW_ALLCHILDREN;
-        OS.RedrawWindow (handle, null, 0, flags);
+        OS.RedrawWindow (handle, null, null, flags);
     }
 }
 
@@ -3614,7 +3626,7 @@
 void updateBackgroundImage () {
     Control control = findBackgroundControl ();
     Image image = control !is null ? control.backgroundImage : backgroundImage;
-    setBackgroundImage (image !is null ? image.handle : 0);
+    setBackgroundImage (image !is null ? image.handle : null);
 }
 
 void updateBackgroundMode () {
@@ -3626,7 +3638,7 @@
 }
 
 void updateFont (Font oldFont, Font newFont) {
-    if (getFont ().equals (oldFont)) setFont (newFont);
+    if (getFont () ==/*eq*/oldFont ) setFont (newFont);
 }
 
 void updateImages () {
@@ -3637,13 +3649,13 @@
     /* Do nothing */
 }
 
-CREATESTRUCT widgetCreateStruct () {
+CREATESTRUCT* widgetCreateStruct () {
     return null;
 }
 
 int widgetExtStyle () {
     int bits = 0;
-    if (!OS.IsPPC) {
+    if (!OS.IsPPC_) {
         if ((style & DWT.BORDER) !is 0) bits |= OS.WS_EX_CLIENTEDGE;
     }
 //  if ((style & DWT.BORDER) !is 0) {
@@ -3672,7 +3684,7 @@
 //  if ((style & DWT.BORDER) !is 0) {
 //      if ((style & DWT.FLAT) !is 0) bits |= OS.WS_BORDER;
 //  }
-    if (OS.IsPPC) {
+    if (OS.IsPPC_) {
         if ((style & DWT.BORDER) !is 0) bits |= OS.WS_BORDER;
     }
     return bits;
@@ -3719,20 +3731,20 @@
         Menu [] menus = oldShell.findMenus (this);
         fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
     }
-    int topHandle = topHandle ();
-    if (OS.SetParent (topHandle, parent.handle) is 0) return false;
+    auto topHandle_ = topHandle ();
+    if (OS.SetParent (topHandle_, parent.handle) is null) return false;
     this.parent = parent;
     int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE;
-    SetWindowPos (topHandle, OS.HWND_BOTTOM, 0, 0, 0, 0, flags);
+    SetWindowPos (topHandle_, cast(HWND)OS.HWND_BOTTOM, 0, 0, 0, 0, flags);
     return true;
 }
 
-abstract TCHAR windowClass ();
+abstract char[] windowClass ();
 
 abstract int windowProc ();
 
-int windowProc (int hwnd, int msg, int wParam, int lParam) {
-    LRESULT result = null;
+int windowProc (HWND hwnd, int msg, int wParam, int lParam) {
+    LRESULT result = LRESULT.NULL;
     switch (msg) {
         case OS.WM_ACTIVATE:            result = WM_ACTIVATE (wParam, lParam); break;
         case OS.WM_CAPTURECHANGED:      result = WM_CAPTURECHANGED (wParam, lParam); break;
@@ -3823,12 +3835,12 @@
         case OS.WM_XBUTTONDOWN:         result = WM_XBUTTONDOWN (wParam, lParam); break;
         case OS.WM_XBUTTONUP:           result = WM_XBUTTONUP (wParam, lParam); break;
     }
-    if (result !is null) return result.value;
+    if (result !is LRESULT.NULL) return result;
     return callWindowProc (hwnd, msg, wParam, lParam);
 }
 
 LRESULT WM_ACTIVATE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_CAPTURECHANGED (int wParam, int lParam) {
@@ -3840,11 +3852,11 @@
 }
 
 LRESULT WM_CLEAR (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_CLOSE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_COMMAND (int wParam, int lParam) {
@@ -3861,10 +3873,10 @@
                 return item.wmCommandChild (wParam, lParam);
             }
         }
-        return null;
+        return LRESULT.NULL;
     }
-    Control control = display.getControl (lParam);
-    if (control is null) return null;
+    Control control = display.getControl (cast(HANDLE)lParam);
+    if (control is null) return LRESULT.NULL;
     return control.wmCommandChild (wParam, lParam);
 }
 
@@ -3873,42 +3885,42 @@
 }
 
 LRESULT WM_CTLCOLOR (int wParam, int lParam) {
-    int hPalette = display.hPalette;
-    if (hPalette !is 0) {
-        OS.SelectPalette (wParam, hPalette, false);
-        OS.RealizePalette (wParam);
+    auto hPalette = display.hPalette;
+    if (hPalette !is null) {
+        OS.SelectPalette ( cast(HPALETTE)wParam, hPalette, false);
+        OS.RealizePalette (cast(HPALETTE)wParam);
     }
-    Control control = display.getControl (lParam);
-    if (control is null) return null;
+    Control control = display.getControl (cast(HANDLE)lParam);
+    if (control is null) return LRESULT.NULL;
     return control.wmColorChild (wParam, lParam);
 }
 
 LRESULT WM_CUT (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_DESTROY (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_DRAWITEM (int wParam, int lParam) {
     DRAWITEMSTRUCT* struct_ = cast(DRAWITEMSTRUCT*)lParam;
     if (struct_.CtlType is OS.ODT_MENU) {
         MenuItem item = display.getMenuItem (struct_.itemID);
-        if (item is null) return null;
+        if (item is null) return LRESULT.NULL;
         return item.wmDrawChild (wParam, lParam);
     }
     Control control = display.getControl (struct_.hwndItem);
-    if (control is null) return null;
+    if (control is null) return LRESULT.NULL;
     return control.wmDrawChild (wParam, lParam);
 }
 
 LRESULT WM_ENDSESSION (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_ENTERIDLE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_ERASEBKGND (int wParam, int lParam) {
@@ -3920,39 +3932,38 @@
             if (findThemeControl () !is null) return LRESULT.ONE;
         }
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_GETDLGCODE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_GETFONT (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_GETOBJECT (int wParam, int lParam) {
     if (accessible !is null) {
-        int result = accessible.internal_WM_GETOBJECT (wParam, lParam);
-        if (result !is 0) return new LRESULT (result);
+        LRESULT result = cast(LRESULT) accessible.internal_WM_GETOBJECT (wParam, lParam);
+        if (result !is 0) return result;
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_GETMINMAXINFO (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_HOTKEY (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_HELP (int wParam, int lParam) {
-    if (OS.IsWinCE) return null;
-    HELPINFO lphi = new HELPINFO ();
-    OS.MoveMemory (lphi, lParam, HELPINFO.sizeof);
+    if (OS.IsWinCE) return LRESULT.NULL;
+    HELPINFO* lphi = cast(HELPINFO*)lParam;
     Decorations shell = menuShell ();
-    if (!shell.isEnabled ()) return null;
+    if (!shell.isEnabled ()) return LRESULT.NULL;
     if (lphi.iContextType is OS.HELPINFO_MENUITEM) {
         MenuItem item = display.getMenuItem (lphi.iCtrlId);
         if (item !is null && item.isEnabled ()) {
@@ -3964,24 +3975,24 @@
                 if (menu.hooks (DWT.Help)) widget = menu;
             }
             if (widget !is null) {
-                int hwndShell = shell.handle;
+                auto hwndShell = shell.handle;
                 OS.SendMessage (hwndShell, OS.WM_CANCELMODE, 0, 0);
                 widget.postEvent (DWT.Help);
                 return LRESULT.ONE;
             }
         }
-        return null;
+        return LRESULT.NULL;
     }
     if (hooks (DWT.Help)) {
         postEvent (DWT.Help);
         return LRESULT.ONE;
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_HSCROLL (int wParam, int lParam) {
-    Control control = display.getControl (lParam);
-    if (control is null) return null;
+    Control control = display.getControl (cast(HANDLE)lParam);
+    if (control is null) return LRESULT.NULL;
     return control.wmScrollChild (wParam, lParam);
 }
 
@@ -3990,13 +4001,13 @@
 }
 
 LRESULT WM_IME_COMPOSITION (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_INITMENUPOPUP (int wParam, int lParam) {
 
     /* Ignore WM_INITMENUPOPUP for an accelerator */
-    if (display.accelKeyHit) return null;
+    if (display.accelKeyHit) return LRESULT.NULL;
 
     /*
     * If the high order word of LPARAM is non-zero,
@@ -4006,7 +4017,7 @@
     Shell shell = getShell ();
     Menu oldMenu = shell.activeMenu, newMenu = null;
     if ((lParam >> 16) is 0) {
-        newMenu = menuShell ().findMenu (wParam);
+        newMenu = menuShell ().findMenu (cast(HANDLE)wParam);
         if (newMenu !is null) newMenu.update ();
     }
     Menu menu = newMenu;
@@ -4047,11 +4058,11 @@
         newMenu.sendEvent (DWT.Show);
         // widget could be disposed at this point
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_INPUTLANGCHANGE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_KEYDOWN (int wParam, int lParam) {
@@ -4094,12 +4105,12 @@
     MEASUREITEMSTRUCT* struct_ = cast(MEASUREITEMSTRUCT*)lParam;;
     if (struct_.CtlType is OS.ODT_MENU) {
         MenuItem item = display.getMenuItem (struct_.itemID);
-        if (item is null) return null;
+        if (item is null) return LRESULT.NULL;
         return item.wmMeasureChild (wParam, lParam);
     }
-    int hwnd = OS.GetDlgItem (handle, struct_.CtlID);
+    auto hwnd = OS.GetDlgItem (handle, struct_.CtlID);
     Control control = display.getControl (hwnd);
-    if (control is null) return null;
+    if (control is null) return LRESULT.NULL;
     return control.wmMeasureChild (wParam, lParam);
 }
 
@@ -4115,9 +4126,9 @@
     int type = wParam >> 16;
     if (type is 0 || type is OS.MF_SYSMENU) {
         display.mnemonicKeyHit = false;
-        return new LRESULT (OS.MNC_CLOSE << 16);
+        return cast( LRESULT )(OS.MNC_CLOSE << 16);
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_MENUSELECT (int wParam, int lParam) {
@@ -4153,23 +4164,23 @@
         * to null in a destroyed widget is not harmful.
         */
         shell.activeMenu = null;
-        return null;
+        return LRESULT.NULL;
     }
-    if ((code & OS.MF_SYSMENU) !is 0) return null;
+    if ((code & OS.MF_SYSMENU) !is 0) return LRESULT.NULL;
     if ((code & OS.MF_HILITE) !is 0) {
         MenuItem item = null;
         Decorations menuShell = menuShell ();
         if ((code & OS.MF_POPUP) !is 0) {
             int index = wParam & 0xFFFF;
-            MENUITEMINFO info = new MENUITEMINFO ();
+            MENUITEMINFO info;
             info.cbSize = MENUITEMINFO.sizeof;
             info.fMask = OS.MIIM_SUBMENU;
-            if (OS.GetMenuItemInfo (lParam, index, true, info)) {
+            if (OS.GetMenuItemInfo (cast(HANDLE)lParam, index, true, &info)) {
                 Menu newMenu = menuShell.findMenu (info.hSubMenu);
                 if (newMenu !is null) item = newMenu.cascade;
             }
         } else {
-            Menu newMenu = menuShell.findMenu (lParam);
+            Menu newMenu = menuShell.findMenu (cast(HANDLE)lParam);
             if (newMenu !is null) {
                 int id = wParam & 0xFFFF;
                 item = display.getMenuItem (id);
@@ -4212,11 +4223,11 @@
         }
         if (item !is null) item.sendEvent (DWT.Arm);
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_MOUSEACTIVATE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_MOUSEHOVER (int wParam, int lParam) {
@@ -4250,34 +4261,33 @@
     }
     sendEvent (DWT.Move);
     // widget could be disposed at this point
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NCACTIVATE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NCCALCSIZE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NCHITTEST (int wParam, int lParam) {
-    if (!OS.IsWindowEnabled (handle)) return null;
-    if (!isActive ()) return new LRESULT (OS.HTTRANSPARENT);
-    return null;
+    if (!OS.IsWindowEnabled (handle)) return LRESULT.NULL;
+    if (!isActive ()) return cast( LRESULT )(OS.HTTRANSPARENT);
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NCLBUTTONDOWN (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NCPAINT (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_NOTIFY (int wParam, int lParam) {
-    NMHDR hdr = new NMHDR ();
-    OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
+    NMHDR* hdr = cast(NMHDR*)lParam;
     return wmNotify (hdr, wParam, lParam);
 }
 
@@ -4286,15 +4296,15 @@
 }
 
 LRESULT WM_PALETTECHANGED (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_PARENTNOTIFY (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_PASTE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_PRINT (int wParam, int lParam) {
@@ -4302,19 +4312,19 @@
 }
 
 LRESULT WM_PRINTCLIENT (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_QUERYENDSESSION (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_QUERYNEWPALETTE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_QUERYOPEN (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_RBUTTONDBLCLK (int wParam, int lParam) {
@@ -4332,15 +4342,15 @@
 LRESULT WM_SETCURSOR (int wParam, int lParam) {
     int hitTest = cast(short) (lParam & 0xFFFF);
     if (hitTest is OS.HTCLIENT) {
-        Control control = display.getControl (wParam);
-        if (control is null) return null;
+        Control control = display.getControl (cast(HANDLE)wParam);
+        if (control is null) return LRESULT.NULL;
         Cursor cursor = control.findCursor ();
         if (cursor !is null) {
             OS.SetCursor (cursor.handle);
             return LRESULT.ONE;
         }
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SETFOCUS (int wParam, int lParam) {
@@ -4348,25 +4358,25 @@
 }
 
 LRESULT WM_SETTINGCHANGE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SETFONT (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SETREDRAW (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SHOWWINDOW (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SIZE (int wParam, int lParam) {
     sendEvent (DWT.Resize);
     // widget could be disposed at this point
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SYSCHAR (int wParam, int lParam) {
@@ -4374,7 +4384,7 @@
 }
 
 LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SYSCOMMAND (int wParam, int lParam) {
@@ -4397,7 +4407,7 @@
     int cmd = wParam & 0xFFF0;
     switch (cmd) {
         case OS.SC_CLOSE:
-            int hwndShell = menuShell ().handle;
+            auto hwndShell = menuShell ().handle;
             int bits = OS.GetWindowLong (hwndShell, OS.GWL_STYLE);
             if ((bits & OS.WS_SYSMENU) is 0) return LRESULT.ZERO;
             break;
@@ -4449,15 +4459,15 @@
                         if (menu !is null) {
                             char key = Display.mbcsToWcs (lParam);
                             if (key !is 0) {
-                                key = Character.toUpperCase (key);
+                                key = CharacterToLower (key);
                                 MenuItem [] items = menu.getItems ();
                                 for (int i=0; i<items.length; i++) {
                                     MenuItem item = items [i];
                                     char[] text = item.getText ();
                                     char mnemonic = findMnemonic (text);
-                                    if (text.length () > 0 && mnemonic is 0) {
+                                    if (text.length > 0 && mnemonic is 0) {
                                         char ch = text.charAt (0);
-                                        if (Character.toUpperCase (ch) is key) {
+                                        if (CharacterToLower (ch) is key) {
                                             display.mnemonicKeyHit = false;
                                             return LRESULT.ZERO;
                                         }
@@ -4487,7 +4497,7 @@
             menuShell ().saveFocus ();
             break;
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_SYSKEYDOWN (int wParam, int lParam) {
@@ -4499,25 +4509,25 @@
 }
 
 LRESULT WM_TIMER (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_UNDO (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_UPDATEUISTATE (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_VSCROLL (int wParam, int lParam) {
-    Control control = display.getControl (lParam);
-    if (control is null) return null;
+    Control control = display.getControl (cast(HANDLE)lParam);
+    if (control is null) return LRESULT.NULL;
     return control.wmScrollChild (wParam, lParam);
 }
 
 LRESULT WM_WINDOWPOSCHANGED (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_WINDOWPOSCHANGING (int wParam, int lParam) {
@@ -4530,18 +4540,17 @@
     if (drawCount !is 0) {
         Shell shell = getShell ();
         if (shell !is this) {
-            WINDOWPOS lpwp = new WINDOWPOS ();
-            OS.MoveMemory (lpwp, lParam, WINDOWPOS.sizeof);
+            WINDOWPOS* lpwp = cast(WINDOWPOS*)lParam;
             if ((lpwp.flags & OS.SWP_NOMOVE) is 0 || (lpwp.flags & OS.SWP_NOSIZE) is 0) {
-                RECT rect = new RECT ();
-                OS.GetWindowRect (topHandle (), rect);
-                int hwndParent = parent is null ? 0 : parent.handle;
-                OS.MapWindowPoints (0, hwndParent, rect, 2);
-                OS.InvalidateRect (hwndParent, rect, true);
+                RECT rect;
+                OS.GetWindowRect (topHandle (), &rect);
+                auto hwndParent = parent is null ? null : parent.handle;
+                OS.MapWindowPoints (null, hwndParent, cast(POINT*)&rect, 2);
+                OS.InvalidateRect (hwndParent, &rect, true);
             }
         }
     }
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT WM_XBUTTONDBLCLK (int wParam, int lParam) {
@@ -4563,77 +4572,77 @@
             if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
                 control = findThemeControl ();
                 if (control !is null) {
-                    RECT rect = new RECT ();
-                    OS.GetClientRect (handle, rect);
-                    OS.SetTextColor (wParam, getForegroundPixel ());
-                    OS.SetBkColor (wParam, getBackgroundPixel ());
-                    fillThemeBackground (wParam, control, rect);
-                    OS.SetBkMode (wParam, OS.TRANSPARENT);
-                    return new LRESULT (OS.GetStockObject (OS.NULL_BRUSH));
+                    RECT rect;
+                    OS.GetClientRect (handle, &rect);
+                    OS.SetTextColor (cast(HANDLE)wParam, getForegroundPixel ());
+                    OS.SetBkColor (cast(HANDLE)wParam, getBackgroundPixel ());
+                    fillThemeBackground (cast(HANDLE)wParam, control, &rect);
+                    OS.SetBkMode (cast(HANDLE)wParam, OS.TRANSPARENT);
+                    return cast( LRESULT )(OS.GetStockObject (OS.NULL_BRUSH));
                 }
             }
         }
-        if (foreground is -1) return null;
+        if (foreground is -1) return LRESULT.NULL;
     }
     if (control is null) control = this;
     int forePixel = getForegroundPixel ();
     int backPixel = control.getBackgroundPixel ();
-    OS.SetTextColor (wParam, forePixel);
-    OS.SetBkColor (wParam, backPixel);
+    OS.SetTextColor (cast(HANDLE)wParam, forePixel);
+    OS.SetBkColor (cast(HANDLE)wParam, backPixel);
     if (control.backgroundImage !is null) {
-        RECT rect = new RECT ();
-        OS.GetClientRect (handle, rect);
-        int hwnd = control.handle;
-        int hBitmap = control.backgroundImage.handle;
-        OS.MapWindowPoints (handle, hwnd, rect, 2);
-        POINT lpPoint = new POINT ();
-        OS.GetWindowOrgEx (wParam, lpPoint);
-        OS.SetBrushOrgEx (wParam, -rect.left - lpPoint.x, -rect.top - lpPoint.y, lpPoint);
-        int hBrush = findBrush (hBitmap, OS.BS_PATTERN);
+        RECT rect;
+        OS.GetClientRect (handle, &rect);
+        auto hwnd = control.handle;
+        auto hBitmap = control.backgroundImage.handle;
+        OS.MapWindowPoints (handle, hwnd, cast(POINT*)&rect, 2);
+        POINT lpPoint;
+        OS.GetWindowOrgEx (cast(HANDLE)wParam, &lpPoint);
+        OS.SetBrushOrgEx (cast(HANDLE)wParam, -rect.left - lpPoint.x, -rect.top - lpPoint.y, &lpPoint);
+        auto hBrush = findBrush (cast(int)hBitmap, OS.BS_PATTERN);
         if ((state & DRAW_BACKGROUND) !is 0) {
-            int hOldBrush = OS.SelectObject (wParam, hBrush);
-            OS.MapWindowPoints (hwnd, handle, rect, 2);
-            OS.PatBlt (wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
-            OS.SelectObject (wParam, hOldBrush);
+            auto hOldBrush = OS.SelectObject (cast(HANDLE)wParam, hBrush);
+            OS.MapWindowPoints (hwnd, handle, cast(POINT*)&rect, 2);
+            OS.PatBlt (cast(HANDLE)wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
+            OS.SelectObject (cast(HANDLE)wParam, hOldBrush);
         }
-        OS.SetBkMode (wParam, OS.TRANSPARENT);
-        return new LRESULT (hBrush);
+        OS.SetBkMode (cast(HANDLE)wParam, OS.TRANSPARENT);
+        return cast( LRESULT )(hBrush);
     }
-    int hBrush = findBrush (backPixel, OS.BS_SOLID);
+    auto hBrush = findBrush (backPixel, OS.BS_SOLID);
     if ((state & DRAW_BACKGROUND) !is 0) {
-        RECT rect = new RECT ();
-        OS.GetClientRect (handle, rect);
-        int hOldBrush = OS.SelectObject (wParam, hBrush);
-        OS.PatBlt (wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
-        OS.SelectObject (wParam, hOldBrush);
+        RECT rect;
+        OS.GetClientRect (handle, &rect);
+        auto hOldBrush = OS.SelectObject (cast(HANDLE)wParam, hBrush);
+        OS.PatBlt (cast(HANDLE)wParam, rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, OS.PATCOPY);
+        OS.SelectObject (cast(HANDLE)wParam, hOldBrush);
     }
-    return new LRESULT (hBrush);
+    return cast( LRESULT )(hBrush);
 }
 
 LRESULT wmCommandChild (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT wmDrawChild (int wParam, int lParam) {
-    return null;
+    return LRESULT.NULL;
 }
 
 LRESULT wmMeasureChild (int wParam, int lParam) {
-    return null;
-}
-
-LRESULT wmNotify (NMHDR hdr, int wParam, int lParam) {
+    return LRESULT.NULL;
+}
+
+LRESULT wmNotify (NMHDR* hdr, int wParam, int lParam) {
     Control control = display.getControl (hdr.hwndFrom);
-    if (control is null) return null;
+    if (control is null) return LRESULT.NULL;
     return control.wmNotifyChild (hdr, wParam, lParam);
 }
 
-LRESULT wmNotifyChild (NMHDR hdr, int wParam, int lParam) {
-    return null;
+LRESULT wmNotifyChild (NMHDR* hdr, int wParam, int lParam) {
+    return LRESULT.NULL;
 }
 
 LRESULT wmScrollChild (int wParam, int lParam) {
-    return null;
-}
-
-}
+    return LRESULT.NULL;
+}
+
+}
--- a/dwt/widgets/Decorations.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Decorations.d	Tue Jan 29 00:16:12 2008 +0100
@@ -13,8 +13,17 @@
 module dwt.widgets.Decorations;
 
 import dwt.widgets.Canvas;
+import dwt.widgets.Menu;
+import dwt.widgets.Control;
+import dwt.internal.win32.OS;
+
 class Decorations : Canvas {
+Menu findMenu (HMENU hMenu) ;
 void bringToTop () ;
+void fixDecorations (Decorations newDecorations, Control control, Menu [] menus) ;
+void setSavedFocus (Control control) ;
+public Menu getMenuBar () ;
+void saveFocus () ;
 }
 /++
 import dwt.DWT;
--- a/dwt/widgets/Display.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Display.d	Tue Jan 29 00:16:12 2008 +0100
@@ -4440,6 +4440,10 @@
     return d.windowProc( hwnd, msg, wParam, lParam );
 }
 
+int windowProc(){
+    return cast(int)&windowProcFunc;
+}
+
 int windowProc (HWND hwnd, uint msg, uint wParam, int lParam) {
     /*
     * Bug in Adobe Reader 7.0.  For some reason, when Adobe
--- a/dwt/widgets/Menu.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Menu.d	Tue Jan 29 00:16:12 2008 +0100
@@ -13,12 +13,19 @@
 module dwt.widgets.Menu;
 
 import dwt.widgets.Widget;
+import dwt.widgets.Decorations;
+import dwt.widgets.MenuItem;
+
 class Menu : Widget {
+    MenuItem cascade;
+    Decorations parent;
     this( Widget, int );
 public void setLocation (int x, int y) ;
 public void setVisible (bool visible) ;
 void update ();
 void _setVisible (bool visible) ;
+public Menu getParentMenu () ;
+public MenuItem [] getItems () ;
 }
 /++
 import dwt.DWT;
--- a/dwt/widgets/MenuItem.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/MenuItem.d	Tue Jan 29 00:16:12 2008 +0100
@@ -14,12 +14,19 @@
 
 import dwt.widgets.Item;
 import dwt.widgets.Widget;
+import dwt.widgets.Menu;
 
 class MenuItem : Item {
+    Menu parent, menu;
     int id;
     public this (Widget parent, int style) {
         super (parent, style);
     }
+public bool getEnabled () ;
+public bool isEnabled () ;
+LRESULT wmCommandChild (int wParam, int lParam) ;
+LRESULT wmDrawChild (int wParam, int lParam) ;
+LRESULT wmMeasureChild (int wParam, int lParam) ;
 }
 /++
 import dwt.DWT;
--- a/dwt/widgets/Shell.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Shell.d	Tue Jan 29 00:16:12 2008 +0100
@@ -11,9 +11,21 @@
 module dwt.widgets.Shell;
 
 import dwt.widgets.Decorations;
+import dwt.widgets.Control;
+import dwt.widgets.Menu;
+import dwt.internal.win32.OS;
+
 class Shell : Decorations {
+    Menu activeMenu;
     void checkWidget ();
-void updateModal () ;
+    void updateModal () ;
+    void fixShell (Shell newShell, Control control) ;
+    void setActiveControl (Control control) ;
+    void register () ;
+    void releaseBrushes () ;
+    void releaseChildren (bool destroy) ;
+    void setToolTipText (HWND hwnd, char[] text) ;
+    void fixToolTip () ;
 }
 /++
 import dwt.DWT;
@@ -23,22 +35,7 @@
 import dwt.graphics.Point;
 import dwt.graphics.Rectangle;
 import dwt.graphics.Region;
-import dwt.internal.win32.CREATESTRUCT;
-import dwt.internal.win32.LOGBRUSH;
-import dwt.internal.win32.LRESULT;
-import dwt.internal.win32.MINMAXINFO;
-import dwt.internal.win32.MSG;
-import dwt.internal.win32.NMTTDISPINFO;
 import dwt.internal.win32.OS;
-import dwt.internal.win32.POINT;
-import dwt.internal.win32.RECT;
-import dwt.internal.win32.SHACTIVATEINFO;
-import dwt.internal.win32.SIPINFO;
-import dwt.internal.win32.STARTUPINFO;
-import dwt.internal.win32.TCHAR;
-import dwt.internal.win32.TOOLINFO;
-import dwt.internal.win32.WINDOWPOS;
-import dwt.internal.win32.WNDCLASS;
 
 /**
  * Instances of this class represent the "windows"
--- a/dwt/widgets/Widget.d	Mon Jan 28 21:27:31 2008 +0100
+++ b/dwt/widgets/Widget.d	Tue Jan 29 00:16:12 2008 +0100
@@ -26,12 +26,6 @@
 }
 ++/
 
-enum LRESULT {
-    NULL = -1,
-    ZERO = 0,
-    ONE = 1,
-}
-
 import dwt.DWT;
 import dwt.DWTException;
 import dwt.events.DisposeListener;
@@ -79,6 +73,14 @@
  */
 
 public abstract class Widget {
+
+    public enum LRESULT {
+        NULL = -1,
+        ZERO = 0,
+        ONE = 1,
+    }
+
+
     int style, state;
     Display display;
     EventTable eventTable;
@@ -232,8 +234,8 @@
     addListener (DWT.Dispose, typedListener);
 }
 
-int callWindowProc (HWND hwnd, int msg, int wParam, int lParam) {
-    return 0;
+LRESULT callWindowProc (HWND hwnd, int msg, int wParam, int lParam) {
+    return LRESULT.ZERO;
 }
 
 /**
@@ -1303,12 +1305,12 @@
     return Format( "{} {{{}}", getName (), string ); //$NON-NLS-1$ //$NON-NLS-2$
 }
 
-LRESULT wmCaptureChanged (int hwnd, int wParam, int lParam) {
+LRESULT wmCaptureChanged (HWND hwnd, int wParam, int lParam) {
     display.captureChanged = true;
     return LRESULT.NULL;
 }
 
-LRESULT wmChar (int hwnd, int wParam, int lParam) {
+LRESULT wmChar (HWND hwnd, int wParam, int lParam) {
     /*
     * Do not report a lead byte as a key pressed.
     */
@@ -1713,7 +1715,7 @@
 }
 
 LRESULT wmKillFocus (HWND hwnd, int wParam, int lParam) {
-    int code = callWindowProc (hwnd, OS.WM_KILLFOCUS, wParam, lParam);
+    LRESULT code = callWindowProc (hwnd, OS.WM_KILLFOCUS, wParam, lParam);
     assert( code !is LRESULT.NULL );
     sendFocusEvent (DWT.FocusOut);
     // widget could be disposed at this point
@@ -1749,7 +1751,7 @@
     display.captureChanged = false;
     sendMouseEvent (DWT.MouseDown, 1, hwnd, OS.WM_LBUTTONDOWN, wParam, lParam);
     if (sendMouseEvent (DWT.MouseDoubleClick, 1, hwnd, OS.WM_LBUTTONDBLCLK, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_LBUTTONDBLCLK, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_LBUTTONDBLCLK, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -1788,7 +1790,7 @@
     display.captureChanged = false;
     bool dispatch = sendMouseEvent (DWT.MouseDown, 1, count, 0, false, hwnd, OS.WM_LBUTTONDOWN, wParam, lParam);
     if (dispatch && (consume is null || !consume [0])) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_LBUTTONDOWN, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_LBUTTONDOWN, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -1855,7 +1857,7 @@
     Display display = this.display;
     LRESULT result = LRESULT.NULL;
     if (sendMouseEvent (DWT.MouseUp, 1, hwnd, OS.WM_LBUTTONUP, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_LBUTTONUP, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_LBUTTONUP, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -1893,7 +1895,7 @@
     display.captureChanged = false;
     sendMouseEvent (DWT.MouseDown, 2, hwnd, OS.WM_MBUTTONDOWN, wParam, lParam);
     if (sendMouseEvent (DWT.MouseDoubleClick, 2, hwnd, OS.WM_MBUTTONDBLCLK, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_MBUTTONDBLCLK, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_MBUTTONDBLCLK, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -1909,7 +1911,7 @@
     Display display = this.display;
     display.captureChanged = false;
     if (sendMouseEvent (DWT.MouseDown, 2, hwnd, OS.WM_MBUTTONDOWN, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_MBUTTONDOWN, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_MBUTTONDOWN, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -1924,7 +1926,7 @@
     Display display = this.display;
     LRESULT result = LRESULT.NULL;
     if (sendMouseEvent (DWT.MouseUp, 2, hwnd, OS.WM_MBUTTONUP, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_MBUTTONUP, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_MBUTTONUP, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -2052,7 +2054,7 @@
     if (OS.IsWinCE) {
         RECT rect;
         OS.GetUpdateRect (hwnd, &rect, false);
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam);
         assert( result !is LRESULT.NULL );
         /*
         * Bug in Windows.  When InvalidateRgn(), InvalidateRect()
@@ -2089,7 +2091,7 @@
     } else {
         auto rgn = OS.CreateRectRgn (0, 0, 0, 0);
         OS.GetUpdateRgn (hwnd, rgn, false);
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam);
         assert( result !is LRESULT.NULL );
         GCData data = new GCData ();
         data.hwnd = hwnd;
@@ -2134,7 +2136,7 @@
         if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
             int bits = OS.GetWindowLong (hwnd, OS.GWL_EXSTYLE);
             if ((bits & OS.WS_EX_CLIENTEDGE) !is 0) {
-                int code = callWindowProc (hwnd, OS.WM_PRINT, wParam, lParam);
+                LRESULT code = callWindowProc (hwnd, OS.WM_PRINT, wParam, lParam);
                 assert( code !is LRESULT.NULL );
                 RECT rect;
                 OS.GetWindowRect (hwnd, &rect);
@@ -2170,7 +2172,7 @@
     display.captureChanged = false;
     sendMouseEvent (DWT.MouseDown, 3, hwnd, OS.WM_RBUTTONDOWN, wParam, lParam);
     if (sendMouseEvent (DWT.MouseDoubleClick, 3, hwnd, OS.WM_RBUTTONDBLCLK, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_RBUTTONDBLCLK, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_RBUTTONDBLCLK, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -2186,7 +2188,7 @@
     Display display = this.display;
     display.captureChanged = false;
     if (sendMouseEvent (DWT.MouseDown, 3, hwnd, OS.WM_RBUTTONDOWN, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_RBUTTONDOWN, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_RBUTTONDOWN, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -2201,7 +2203,7 @@
     Display display = this.display;
     LRESULT result = LRESULT.NULL;
     if (sendMouseEvent (DWT.MouseUp, 3, hwnd, OS.WM_RBUTTONUP, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_RBUTTONUP, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_RBUTTONUP, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         /* Call the DefWindowProc() to support WM_CONTEXTMENU */
@@ -2223,7 +2225,7 @@
 }
 
 LRESULT wmSetFocus (HWND hwnd, int wParam, int lParam) {
-    LRESULT code = cast(LRESULT) callWindowProc (hwnd, OS.WM_SETFOCUS, wParam, lParam);
+    LRESULT code = callWindowProc (hwnd, OS.WM_SETFOCUS, wParam, lParam);
     assert( code !is LRESULT.NULL );
     sendFocusEvent (DWT.FocusIn);
     // widget could be disposed at this point
@@ -2253,7 +2255,7 @@
     /* Call the window proc to determine whether it is a system key or mnemonic */
     bool oldKeyHit = display.mnemonicKeyHit;
     display.mnemonicKeyHit = true;
-    LRESULT result = cast(LRESULT) callWindowProc (hwnd, OS.WM_SYSCHAR, wParam, lParam);
+    LRESULT result = callWindowProc (hwnd, OS.WM_SYSCHAR, wParam, lParam);
     assert( result !is LRESULT.NULL );
     bool consumed = false;
     if (!display.mnemonicKeyHit) {
@@ -2412,7 +2414,7 @@
     int button = (wParam >> 16 is OS.XBUTTON1) ? 4 : 5;
     sendMouseEvent (DWT.MouseDown, button, hwnd, OS.WM_XBUTTONDOWN, wParam, lParam);
     if (sendMouseEvent (DWT.MouseDoubleClick, button, hwnd, OS.WM_XBUTTONDBLCLK, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_XBUTTONDBLCLK, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_XBUTTONDBLCLK, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -2430,7 +2432,7 @@
     display.xMouse = true;
     int button = (wParam >> 16 is OS.XBUTTON1) ? 4 : 5;
     if (sendMouseEvent (DWT.MouseDown, button, hwnd, OS.WM_XBUTTONDOWN, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_XBUTTONDOWN, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_XBUTTONDOWN, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;
@@ -2446,7 +2448,7 @@
     LRESULT result = LRESULT.NULL;
     int button = (wParam >> 16 is OS.XBUTTON1) ? 4 : 5;
     if (sendMouseEvent (DWT.MouseUp, button, hwnd, OS.WM_XBUTTONUP, wParam, lParam)) {
-        result = cast(LRESULT) callWindowProc (hwnd, OS.WM_XBUTTONUP, wParam, lParam);
+        result = callWindowProc (hwnd, OS.WM_XBUTTONUP, wParam, lParam);
         assert( result !is LRESULT.NULL );
     } else {
         result = LRESULT.ZERO;