[vtkusers] Problem in SampleMFC test?

[Jean-Dominique Barnichon]

hi,

I've compiled the vtk4.0 MFC sample test (located in
Examples\GUI\Win32\SampleMFC) with VC++6.0 (sp5) under Win98.
When running the exe in fullscreen mode 1024*768*32 (the main frame and the
child frames), there is a  bug which can be easily seen by set background to
white in vtkMFCRenderView constructor :
	this->Renderer->SetBackground(1,1,1);

Then, you just run the exe and you open several child windows.
You (at least I do) should get a black area at the right and bottom part of
the window that increases in size as more and more child windows are opened.

It sounds like a problem between Win32 and vtk?
Does anybody obtain the same behaviour and/or has a clue where it could come
from?

Jean-Do