fix for hanging in wxThread::Delete() (patch 882198)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@25551 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -206,9 +206,9 @@ wxMSW:
 
 - strip ampersands from strings returned by wxMenuBar::GetLabelTop()
 - fixed bug in wxIniConfig::DeleteEntry() (Parinya Thipchart)
+- fixed hang (sometimes) in wxThread::Delete() (Carl-Friedrich Braun)
 - wxLongLong formatting with MinGW corrected
-- wxFileDialog now returns correct filter index for multiple-file
-  dialogs
+- wxFileDialog now returns correct filter index for multiple-file dialogs
 
 wxGTK:
 

src/msw/thread.cpp

@@ -887,8 +887,10 @@ wxThreadError wxThread::Delete(ExitCode *pRc)
                     break;
 
                 case WAIT_OBJECT_0 + 1:
-                    // new message arrived, process it
-                    if ( !wxTheApp->DoMessage() )
+                    // new message arrived (or maybe not... sometimes the queue
+                    // is empty, hence call Pending() to be sure and not hang
+                    // forever in DoMessage(), process it
+                    if ( wxTheApp->Pending() && !wxTheApp->DoMessage() )
                     {
                         // WM_QUIT received: kill the thread
                         Kill();