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hack to _really_ fix crashes in comctl32.dll when processing HDN_GETDISPINFO

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29274 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2004-09-23 09:59:24 +00:00
parent 5a0176957a
commit c68f590a2a
1 changed files with 9 additions and 14 deletions
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21
src/msw/listctrl.cpp
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@@ -1772,20 +1772,15 @@ bool wxListCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
break; break;
case HDN_GETDISPINFOW: case HDN_GETDISPINFOW:
{ // letting Windows XP handle this message results in mysterious
LPNMHDDISPINFOW info = (LPNMHDDISPINFOW) lParam; // crashes in comctl32.dll seemingly because of bad message
// This is a fix for a strange bug under XP. // parameters
// Normally, info->iItem is a valid index, but //
// sometimes this is a silly (large) number // I have no idea what is the real cause of the bug (which is,
// and when we return false via wxControl::MSWOnNotify // just to make things interesting, is impossible to reproduce
// to indicate that it hasn't yet been processed, // reliably) but ignoring all these messages does fix it and
// there's a GPF in Windows. // doesn't seem to have any negative consequences
// By returning true here, we avoid further processing
// of this strange message.
if ( (unsigned)info->iItem >= (unsigned)GetColumnCount() )
return true; return true;
}
// fall through
default: default:
return wxControl::MSWOnNotify(idCtrl, lParam, result); return wxControl::MSWOnNotify(idCtrl, lParam, result);