[ROOT] Forcing TGTransientFrame to Draw before continuing

From: Chris Milne (phycm@phy.hw.ac.uk)
Date: Wed Aug 29 2001 - 17:25:42 MEST 

Hi there,

I have the following function:

void loading()
{

  TGTransientFrame     *fMain;
  TGPictureButton      *fPictButton;
  TGGroupFrame         *fG1;
  TGLayoutHints        *fL3;
   fMain = new TGTransientFrame(gClient->GetRoot(), fMain, 100, 200);
   fMain->ChangeOptions((fMain->GetOptions() & ~kVerticalFrame) | kHorizontalFrame);
   fPictButton = new TGPictureButton(fMain, gClient->GetPicture("loading.xpm"));
   fMain->Resize(fPictButton->GetDefaultWidth(), fMain->GetDefaultHeight());
   fMain->MapSubwindows();
   fMain->SetWindowName("Loading");
   fMain->SetWMSize(300,135);   
   fMain->MapWindow();
   fMain->Move(300,100);
}

This is called twice, and in both cases it is followed by a loop. In both cases the TGTransientFrame does 
not appear on the screen until the subsequent loop has ended, is there a way to force it to appear, or a 
check that will not continue until it is displayed?

cheers
Chris Milne

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