Mercurial > projects > dwt-win
view dwt/widgets/TreeColumn.d @ 213:36f5cb12e1a2
Update to SWT 3.4M7
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 17 May 2008 17:34:28 +0200 |
parents | ab60f3309436 |
children | c749c13479ef |
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/******************************************************************************* * Copyright (c) 2000, 2007 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 dwt.widgets.TreeColumn; import dwt.DWT; import dwt.DWTException; import dwt.events.ControlListener; import dwt.events.SelectionEvent; import dwt.events.SelectionListener; import dwt.graphics.Image; import dwt.graphics.Rectangle; import dwt.internal.win32.OS; import dwt.widgets.Item; import dwt.widgets.Widget; import dwt.widgets.Tree; import dwt.widgets.TreeItem; import dwt.widgets.TypedListener; import dwt.widgets.Event; import dwt.dwthelper.utils; /** * Instances of this class represent a column in a tree widget. * <p><dl> * <dt><b>Styles:</b></dt> * <dd>LEFT, RIGHT, CENTER</dd> * <dt><b>Events:</b></dt> * <dd> Move, Resize, Selection</dd> * </dl> * </p><p> * Note: Only one of the styles LEFT, RIGHT and CENTER may be specified. * </p><p> * IMPORTANT: This class is <em>not</em> intended to be subclassed. * </p> * * @since 3.1 */ public class TreeColumn : Item { Tree parent; bool resizable, moveable; String toolTipText; int id; /** * Constructs a new instance of this class given its parent * (which must be a <code>Tree</code>) and a style value * describing its behavior and appearance. The item is added * to the end of the items maintained by its parent. * <p> * The style value is either one of the style constants defined in * class <code>DWT</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>DWT</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 DWTException <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 DWT#LEFT * @see DWT#RIGHT * @see DWT#CENTER * @see Widget#checkSubclass * @see Widget#getStyle */ public this (Tree parent, int style) { super (parent, checkStyle (style)); resizable = true; this.parent = parent; parent.createItem (this, parent.getColumnCount ()); } /** * Constructs a new instance of this class given its parent * (which must be a <code>Tree</code>), a style value * describing its behavior and appearance, and the index * at which to place it in the items maintained by its parent. * <p> * The style value is either one of the style constants defined in * class <code>DWT</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>DWT</code> style constants. The class description * lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. * </p> * <p> * Note that due to a restriction on some platforms, the first column * is always left aligned. * </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 * @param index the zero-relative index to store the receiver in its parent * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li> * </ul> * @exception DWTException <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 DWT#LEFT * @see DWT#RIGHT * @see DWT#CENTER * @see Widget#checkSubclass * @see Widget#getStyle */ public this (Tree parent, int style, int index) { super (parent, checkStyle (style)); resizable = true; this.parent = parent; parent.createItem (this, index); } /** * Adds the listener to the collection of listeners who will * be notified when the control is moved or resized, by sending * it one of the messages defined in the <code>ControlListener</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 DWTException <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 ControlListener * @see #removeControlListener */ public void addControlListener(ControlListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (DWT.Resize,typedListener); addListener (DWT.Move,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 called when the column header is selected. * <code>widgetDefaultSelected</code> is not called. * </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 DWTException <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 (DWT.ERROR_NULL_ARGUMENT); TypedListener typedListener = new TypedListener (listener); addListener (DWT.Selection,typedListener); addListener (DWT.DefaultSelection,typedListener); } static int checkStyle (int style) { return checkBits (style, DWT.LEFT, DWT.CENTER, DWT.RIGHT, 0, 0, 0); } override protected void checkSubclass () { if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS); } override void destroyWidget () { parent.destroyItem (this); releaseHandle (); } /** * Returns a value which describes the position of the * text or image in the receiver. The value will be one of * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>. * * @return the alignment * * @exception DWTException <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 getAlignment () { checkWidget (); if ((style & DWT.LEFT) !is 0) return DWT.LEFT; if ((style & DWT.CENTER) !is 0) return DWT.CENTER; if ((style & DWT.RIGHT) !is 0) return DWT.RIGHT; return DWT.LEFT; } /** * Gets the moveable attribute. A column that is * not moveable cannot be reordered by the user * by dragging the header but may be reordered * by the programmer. * * @return the moveable attribute * * @exception DWTException <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 Tree#getColumnOrder() * @see Tree#setColumnOrder(int[]) * @see TreeColumn#setMoveable(bool) * @see DWT#Move * * @since 3.2 */ public bool getMoveable () { checkWidget (); return moveable; } override String getNameText () { return getText (); } /** * Returns the receiver's parent, which must be a <code>Tree</code>. * * @return the receiver's parent * * @exception DWTException <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 Tree getParent () { checkWidget (); return parent; } /** * Gets the resizable attribute. A column that is * not resizable cannot be dragged by the user but * may be resized by the programmer. * * @return the resizable attribute * * @exception DWTException <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 getResizable () { checkWidget (); return resizable; } /** * Returns the receiver's tool tip text, or null if it has * not been set. * * @return the receiver's tool tip text * * @exception DWTException <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 3.2 */ public String getToolTipText () { checkWidget(); return toolTipText; } /** * Gets the width of the receiver. * * @return the width * * @exception DWTException <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 getWidth () { checkWidget (); int index = parent.indexOf (this); if (index is -1) return 0; auto hwndHeader = parent.hwndHeader; if (hwndHeader is null) return 0; HDITEM hdItem; hdItem.mask = OS.HDI_WIDTH; OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, &hdItem); return hdItem.cxy; } /** * Causes the receiver to be resized to its preferred size. * For a composite, this involves computing the preferred size * from its layout, if there is one. * * @exception DWTException <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 pack () { checkWidget (); int index = parent.indexOf (this); if (index is -1) return; int columnWidth = 0; auto hwnd = parent.handle; auto hwndHeader = parent.hwndHeader; RECT headerRect; OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, &headerRect); auto hDC = OS.GetDC (hwnd); HFONT oldFont, newFont = cast(HFONT) OS.SendMessage (hwnd, OS.WM_GETFONT, 0, 0); if (newFont !is null) oldFont = OS.SelectObject (hDC, newFont); TVITEM tvItem; tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM; tvItem.hItem = cast(HANDLE) OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0); while (tvItem.hItem !is null) { OS.SendMessage (hwnd, OS.TVM_GETITEM, 0, cast(int) &tvItem); TreeItem item = tvItem.lParam !is -1 ? parent.items [tvItem.lParam] : null; if (item !is null) { int itemRight = 0; if (parent.hooks (DWT.MeasureItem)) { Event event = parent.sendMeasureItemEvent (item, index, hDC); if (isDisposed () || parent.isDisposed ()) break; itemRight = event.x + event.width; } else { auto hFont = item.fontHandle (index); if (hFont !is cast(HFONT)-1) hFont = OS.SelectObject (hDC, hFont); RECT itemRect = item.getBounds (index, true, true, false, false, false, hDC); if (hFont !is cast(HFONT)-1) OS.SelectObject (hDC, hFont); itemRight = itemRect.right; } columnWidth = Math.max (columnWidth, itemRight - headerRect.left); } tvItem.hItem = cast(HANDLE) OS.SendMessage (hwnd, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, tvItem.hItem); } RECT rect; int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX; TCHAR[] buffer = StrToTCHARs (parent.getCodePage (), text, false); OS.DrawText (hDC, buffer.ptr, buffer.length, &rect, flags); int headerWidth = rect.right - rect.left + Tree.HEADER_MARGIN; if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) headerWidth += Tree.HEADER_EXTRA; if (image !is null || parent.sortColumn is this) { Image headerImage = null; if (parent.sortColumn is this && parent.sortDirection !is DWT.NONE) { if (OS.COMCTL32_MAJOR < 6) { headerImage = display.getSortImage (parent.sortDirection); } else { headerWidth += Tree.SORT_WIDTH; } } else { headerImage = image; } if (headerImage !is null) { Rectangle bounds = headerImage.getBounds (); headerWidth += bounds.width; } int margin = 0; if (hwndHeader !is null && OS.COMCTL32_VERSION >= OS.VERSION (5, 80)) { margin = OS.SendMessage (hwndHeader, OS.HDM_GETBITMAPMARGIN, 0, 0); } else { margin = OS.GetSystemMetrics (OS.SM_CXEDGE) * 3; } headerWidth += margin * 2; } if (newFont !is null) OS.SelectObject (hDC, oldFont); OS.ReleaseDC (hwnd, hDC); int gridWidth = parent.linesVisible ? Tree.GRID_WIDTH : 0; setWidth (Math.max (headerWidth, columnWidth + gridWidth)); } override void releaseHandle () { super.releaseHandle (); parent = null; } override void releaseParent () { super.releaseParent (); if (parent.sortColumn is this) { parent.sortColumn = null; } } /** * Removes the listener from the collection of listeners who will * be notified when the control is moved or resized. * * @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 DWTException <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 ControlListener * @see #addControlListener */ public void removeControlListener (ControlListener listener) { checkWidget (); if (listener is null) error (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (DWT.Move, listener); eventTable.unhook (DWT.Resize, 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 DWTException <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 (DWT.ERROR_NULL_ARGUMENT); if (eventTable is null) return; eventTable.unhook (DWT.Selection, listener); eventTable.unhook (DWT.DefaultSelection,listener); } /** * Controls how text and images will be displayed in the receiver. * The argument should be one of <code>LEFT</code>, <code>RIGHT</code> * or <code>CENTER</code>. * <p> * Note that due to a restriction on some platforms, the first column * is always left aligned. * </p> * @param alignment the new alignment * * @exception DWTException <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 setAlignment (int alignment) { checkWidget (); if ((alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER)) is 0) return; int index = parent.indexOf (this); if (index is -1 || index is 0) return; style &= ~(DWT.LEFT | DWT.RIGHT | DWT.CENTER); style |= alignment & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); auto hwndHeader = parent.hwndHeader; if (hwndHeader is null) return; HDITEM hdItem; hdItem.mask = OS.HDI_FORMAT; OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, &hdItem); hdItem.fmt &= ~OS.HDF_JUSTIFYMASK; if ((style & DWT.LEFT) is DWT.LEFT) hdItem.fmt |= OS.HDF_LEFT; if ((style & DWT.CENTER) is DWT.CENTER) hdItem.fmt |= OS.HDF_CENTER; if ((style & DWT.RIGHT) is DWT.RIGHT) hdItem.fmt |= OS.HDF_RIGHT; OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, &hdItem); if (index !is 0) { auto hwnd = parent.handle; parent.forceResize (); RECT rect, headerRect; OS.GetClientRect (hwnd, &rect); OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, &headerRect); rect.left = headerRect.left; rect.right = headerRect.right; OS.InvalidateRect (hwnd, &rect, true); } } override public void setImage (Image image) { checkWidget(); if (image !is null && image.isDisposed ()) { error (DWT.ERROR_INVALID_ARGUMENT); } super.setImage (image); if (parent.sortColumn !is this || parent.sortDirection !is DWT.NONE) { setImage (image, false, false); } } void setImage (Image image, bool sort, bool right) { int index = parent.indexOf (this); if (index is -1) return; auto hwndHeader = parent.hwndHeader; if (hwndHeader is null) return; HDITEM hdItem; hdItem.mask = OS.HDI_FORMAT | OS.HDI_IMAGE | OS.HDI_BITMAP; OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, &hdItem); hdItem.fmt &= ~OS.HDF_BITMAP_ON_RIGHT; if (image !is null) { if (sort) { hdItem.mask &= ~OS.HDI_IMAGE; hdItem.fmt &= ~OS.HDF_IMAGE; hdItem.fmt |= OS.HDF_BITMAP; hdItem.hbm = image.handle; } else { hdItem.mask &= ~OS.HDI_BITMAP; hdItem.fmt &= ~OS.HDF_BITMAP; hdItem.fmt |= OS.HDF_IMAGE; hdItem.iImage = parent.imageIndexHeader (image); } if (right) hdItem.fmt |= OS.HDF_BITMAP_ON_RIGHT; } else { hdItem.mask &= ~(OS.HDI_IMAGE | OS.HDI_BITMAP); hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_BITMAP); } OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, &hdItem); } /** * Sets the moveable attribute. A column that is * moveable can be reordered by the user by dragging * the header. A column that is not moveable cannot be * dragged by the user but may be reordered * by the programmer. * * @param moveable the moveable attribute * * @exception DWTException <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 Tree#setColumnOrder(int[]) * @see Tree#getColumnOrder() * @see TreeColumn#getMoveable() * @see DWT#Move * * @since 3.2 */ public void setMoveable (bool moveable) { checkWidget (); this.moveable = moveable; } /** * Sets the resizable attribute. A column that is * not resizable cannot be dragged by the user but * may be resized by the programmer. * * @param resizable the resize attribute * * @exception DWTException <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 setResizable (bool resizable) { checkWidget (); this.resizable = resizable; } void setSortDirection (int direction) { if (OS.COMCTL32_MAJOR >= 6) { auto hwndHeader = parent.hwndHeader; if (hwndHeader !is null) { int index = parent.indexOf (this); if (index is -1) return; HDITEM hdItem; hdItem.mask = OS.HDI_FORMAT | OS.HDI_IMAGE; OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, &hdItem); switch (direction) { case DWT.UP: hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_SORTDOWN); hdItem.fmt |= OS.HDF_SORTUP; if (image is null) hdItem.mask &= ~OS.HDI_IMAGE; break; case DWT.DOWN: hdItem.fmt &= ~(OS.HDF_IMAGE | OS.HDF_SORTUP); hdItem.fmt |= OS.HDF_SORTDOWN; if (image is null) hdItem.mask &= ~OS.HDI_IMAGE; break; case DWT.NONE: hdItem.fmt &= ~(OS.HDF_SORTUP | OS.HDF_SORTDOWN); if (image !is null) { hdItem.fmt |= OS.HDF_IMAGE; hdItem.iImage = parent.imageIndexHeader (image); } else { hdItem.fmt &= ~OS.HDF_IMAGE; hdItem.mask &= ~OS.HDI_IMAGE; } break; default: } OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, &hdItem); if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { auto hwnd = parent.handle; parent.forceResize (); RECT rect, headerRect; OS.GetClientRect (hwnd, &rect); OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, &headerRect); rect.left = headerRect.left; rect.right = headerRect.right; OS.InvalidateRect (hwnd, &rect, true); } } } else { switch (direction) { case DWT.UP: case DWT.DOWN: setImage (display.getSortImage (direction), true, true); break; case DWT.NONE: setImage (image, false, false); break; default: } } } override public void setText (String string) { checkWidget (); if (string is null) error (DWT.ERROR_NULL_ARGUMENT); if (string==/*eq*/text) return; int index = parent.indexOf (this); if (index is -1) return; super.setText (string); /* * Bug in Windows. When a column header contains a * mnemonic character, Windows does not measure the * text properly. This causes '...' to always appear * at the end of the text. The fix is to remove * mnemonic characters and replace doubled mnemonics * with spaces. */ auto hHeap = OS.GetProcessHeap (); TCHAR[] buffer = StrToTCHARs (parent.getCodePage (), fixMnemonic (string, true), true); int byteCount = buffer.length * TCHAR.sizeof; auto pszText = cast(TCHAR*) OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, byteCount); OS.MoveMemory (pszText, buffer.ptr, byteCount); auto hwndHeader = parent.hwndHeader; if (hwndHeader is null) return; HDITEM hdItem; hdItem.mask = OS.HDI_TEXT; hdItem.pszText = pszText; int result = OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, &hdItem); if (pszText !is null) OS.HeapFree (hHeap, 0, pszText); if (result is 0) error (DWT.ERROR_CANNOT_SET_TEXT); } /** * Sets the receiver's tool tip text to the argument, which * may be null indicating that no tool tip text should be shown. * * @param string the new tool tip text (or null) * * @exception DWTException <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 3.2 */ public void setToolTipText (String string) { checkWidget(); toolTipText = string; auto hwndHeaderToolTip = parent.headerToolTipHandle; if (hwndHeaderToolTip is null) { parent.createHeaderToolTips (); parent.updateHeaderToolTips (); } } /** * Sets the width of the receiver. * * @param width the new width * * @exception DWTException <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 setWidth (int width) { checkWidget (); if (width < 0) return; int index = parent.indexOf (this); if (index is -1) return; auto hwndHeader = parent.hwndHeader; if (hwndHeader is null) return; HDITEM hdItem; hdItem.mask = OS.HDI_WIDTH; hdItem.cxy = width; OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, &hdItem); RECT headerRect; OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, &headerRect); parent.forceResize (); auto hwnd = parent.handle; RECT rect; OS.GetClientRect (hwnd, &rect); rect.left = headerRect.left; OS.InvalidateRect (hwnd, &rect, true); parent.setScrollWidth (); } void updateToolTip (int index) { auto hwndHeaderToolTip = parent.headerToolTipHandle; if (hwndHeaderToolTip !is null) { auto hwndHeader = parent.hwndHeader; RECT rect; if (OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index, &rect) !is 0) { TOOLINFO lpti; lpti.cbSize = TOOLINFO.sizeof; lpti.hwnd = hwndHeader; lpti.uId = id; lpti.rect.left = rect.left; lpti.rect.top = rect.top; lpti.rect.right = rect.right; lpti.rect.bottom = rect.bottom; OS.SendMessage (hwndHeaderToolTip, OS.TTM_NEWTOOLRECT, 0, cast(int) &lpti); } } } }