[Bug 16346] App hangs creating modal dialog from WM_ACTIVATEAPP

http://bugs.winehq.org/show_bug.cgi?id=16346

--- Comment #10 from Dan Kegel  2012-06-23 18:18:12 CDT ---
Created attachment 40669
  --> http://bugs.winehq.org/attachment.cgi?id=40669
Resource file for plain C test case

I've investigated this a bit with the attached plain C test app.
It seems that the handler for the X event carrying WM_TAKE_FOCUS 
calls SetForegroundWindow, and during that call, the entire
sequence of events from parent's WM_ACTIVATEAPP up until the
modal dialog is dismissed happens.  That's a long event handler.