Hey peeps,

Has anyone successfully used QMainWindow and QWinWidget together without issue?
I get problems with focus and activating the QMainWindow.
For example, sometimes a double click is needed, other times one click is needed, and other times (more often that not) I can't click on the window at all without clicking outside of the MFC app then clicking back on the QMainWindow. It appears parenting / ownership isn't quite right.

Here's the current code setup:
Qt Code: 
  1. static QtModelviewer* gModelViewer = 0;
  2.  
  3. MODELVIEWER_C_EXPORT int OpenModelViewer( const LaunchParams& launchParams )
  4. {
  5.   int retVal = -1;
  6.   if( QMfcApp::pluginInstance( launchParams.hInstance ) )
  7.   {
  8.     QWinWidget win( launchParams.hWndParent );
  9.     gModelViewer = new QtModelviewer( &win );
  10.     if( gModelViewer->loadModel( launchParams.filePath ) )
  11.     {
  12.       gModelViewer->show();
  13.       retVal = qApp->exec();
  14.     }
  15.     delete qApp;
  16.     gModelViewer = 0;
  17.   }
  18.   return retVal;
  19. }
  20.  
  21. MODELVIEWER_C_EXPORT bool CloseModelViewer( )
  22. {
  23.   if( gModelViewer )
  24.   {
  25.     qApp->quit();
  26.     return true;
  27.   }
  28.   return false;
  29. }
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I've tried several things including 'How can I embed e.g a QMainWindow inside a QDialog ?' to no avail.