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Ensure sendMeasureItemEvent is only called for OS.TTN_SHOW or custom tooltips #2324

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Merged
merged 1 commit into from
Jul 21, 2025
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Ensure sendMeasureItemEvent is only called for OS.TTN_SHOW or custom tooltips #2324

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27 changes: 17 additions & 10 deletions bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Table.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7188,23 +7188,21 @@ private LRESULT positionTooltip(NMHDR hdr, long lParam) {
if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont);
long hFont = item.fontHandle (pinfo.iSubItem);
if (hFont != -1) hFont = OS.SelectObject (hDC, hFont);
Event event = sendMeasureItemEvent (item, pinfo.iItem, pinfo.iSubItem, hDC);
if (!isDisposed () && !item.isDisposed ()) {
RECT itemRect = new RECT ();
Rectangle boundsInPixels = Win32DPIUtils.pointToPixel(event.getBounds(), getZoom());
OS.SetRect (itemRect, boundsInPixels.x, boundsInPixels.y, boundsInPixels.x + boundsInPixels.width, boundsInPixels.y + boundsInPixels.height);
if (!isDisposed() && !item.isDisposed()) {
if (hdr.code == OS.TTN_SHOW) {
RECT toolRect = isCustomToolTip() ? toolTipRect (itemRect) : itemRect;
OS.MapWindowPoints (handle, 0, toolRect, 2);
long hwndToolTip = OS.SendMessage (handle, OS.LVM_GETTOOLTIPS, 0, 0);
RECT itemRect = getItemBounds(pinfo, item, hDC);
RECT toolRect = isCustomToolTip() ? toolTipRect(itemRect) : itemRect;
OS.MapWindowPoints(handle, 0, toolRect, 2);
long hwndToolTip = OS.SendMessage(handle, OS.LVM_GETTOOLTIPS, 0, 0);
int flags = OS.SWP_NOACTIVATE | OS.SWP_NOZORDER;
Rectangle adjustedTooltipBounds = getDisplay().fitRectangleBoundsIntoMonitorWithCursor(toolRect);
OS.SetWindowPos(hwndToolTip, 0, adjustedTooltipBounds.x, adjustedTooltipBounds.y,
adjustedTooltipBounds.width, adjustedTooltipBounds.height, flags);
result = LRESULT.ONE;
} else if (isCustomToolTip()) {
NMTTDISPINFO lpnmtdi = new NMTTDISPINFO ();
OS.MoveMemory (lpnmtdi, lParam, NMTTDISPINFO.sizeof);
RECT itemRect = getItemBounds(pinfo, item, hDC);
NMTTDISPINFO lpnmtdi = new NMTTDISPINFO();
OS.MoveMemory(lpnmtdi, lParam, NMTTDISPINFO.sizeof);
if (lpnmtdi.lpszText != 0) {
OS.MoveMemory (lpnmtdi.lpszText, new char [1], 2);
OS.MoveMemory (lParam, lpnmtdi, NMTTDISPINFO.sizeof);
Expand All @@ -7231,6 +7229,15 @@ private LRESULT positionTooltip(NMHDR hdr, long lParam) {
return result;
}

private RECT getItemBounds(LVHITTESTINFO pinfo, TableItem item, long hDC) {
Event event = sendMeasureItemEvent(item, pinfo.iItem, pinfo.iSubItem, hDC);
RECT itemRect = new RECT();
Rectangle boundsInPixels = Win32DPIUtils.pointToPixel(event.getBounds(), getZoom());
OS.SetRect(itemRect, boundsInPixels.x, boundsInPixels.y, boundsInPixels.x + boundsInPixels.width,
boundsInPixels.y + boundsInPixels.height);
return itemRect;
}

LRESULT wmNotifyToolTip (NMTTCUSTOMDRAW nmcd, long lParam) {
switch (nmcd.dwDrawStage) {
case OS.CDDS_PREPAINT: {
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