Problem using MFC modal dialog with long animation refresh 
Author Message
 Problem using MFC modal dialog with long animation refresh


I'm using OpenGL, a SetTimer call and OnTimer method to control an
animation in a MFC MDI program.  It all seems to work great until the
size of the models I am displaying cause the refresh rate to exceed
the interval between the OnTimer calls.  I don't mind if the animation
slows down at that point (which it does) since this is an engineering
application.  The problem is that when I try to bring up a modal
window with a CDialog::DoModal() call while it is animating, the
dialog never appears but the dialog handler thread continues to
execute and wait for input.  My animation contiues to run but I can no
longer get the focus back from the dialog and can't interact with the

I suspect the problem is that my OnTimer routine issues redraw events
rather than actually redrawing the program.  If this is the case, can
someone suggest a better way to handle the animation timing in a MDI
program where all of the views and models animate together?

Here is some of my code:

void CMainFrame::OnTimer(UINT nIDEvent)
{ CObList docList;
  CNomadDoc *doc;

  if (!docList.IsEmpty())
    doc=(CNomadDoc *)docList.GetHead();
      doc=(CNomadDoc *)docList.GetNext(pos);


// this routine is called from the user menu
void CMainFrame::OnViewOptions()
{ int createVal;

  createVal=m_viewDialog.DoModal();  // hangs in this call
    CNomadDoc *doc=(CNomadDoc *)GetMDIActiveDocument();
    if (doc!=NULL)


Mon, 28 Jun 2004 03:31:09 GMT  
 [ 1 post ] 

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