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fix for releasing the HDC in WM_DRAWITEM handler

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10261 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2001-05-21 23:10:31 +00:00
parent 5260937e74
commit 7561aacd5e
3 changed files with 29 additions and 17 deletions
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23
src/msw/window.cpp
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@@ -2923,19 +2923,20 @@ bool wxWindow::MSWOnDrawItem(int id, WXDRAWITEMSTRUCT *itemStruct)
wxCHECK( pMenuItem->IsKindOf(CLASSINFO(wxMenuItem)), FALSE );
// prepare to call OnDrawItem()
wxDC dc;
dc.SetHDC((WXHDC)pDrawStruct->hDC, FALSE);
// prepare to call OnDrawItem(): notice using of wxDCTemp to prevent
// the DC from being released
wxDCTemp dc((WXHDC)pDrawStruct->hDC);
wxRect rect(pDrawStruct->rcItem.left, pDrawStruct->rcItem.top,
pDrawStruct->rcItem.right - pDrawStruct->rcItem.left,
pDrawStruct->rcItem.bottom - pDrawStruct->rcItem.top);
return pMenuItem->OnDrawItem
(
dc, rect,
(wxOwnerDrawn::wxODAction)pDrawStruct->itemAction,
(wxOwnerDrawn::wxODStatus)pDrawStruct->itemState
);
(
dc,
rect,
(wxOwnerDrawn::wxODAction)pDrawStruct->itemAction,
(wxOwnerDrawn::wxODStatus)pDrawStruct->itemState
);
}
wxWindow *item = FindItem(id);
@@ -3103,9 +3104,8 @@ bool wxWindow::HandleEraseBkgnd(WXHDC hdc)
if ( ::IsIconic(GetHwnd()) )
return TRUE;
wxDC dc;
wxDCTemp dc(hdc);
dc.SetHDC(hdc);
dc.SetWindow(this);
dc.BeginDrawing();
@@ -3114,8 +3114,9 @@ bool wxWindow::HandleEraseBkgnd(WXHDC hdc)
bool rc = GetEventHandler()->ProcessEvent(event);
dc.EndDrawing();
// must be called manually as ~wxDC doesn't do anything for wxDCTemp
dc.SelectOldObjects(hdc);
dc.SetHDC((WXHDC) NULL);
return rc;
}