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<DIV><FONT size=2>I am using vtk3.2+windows2000+VC 6.0 and </FONT><FONT size=2>I
use the MDI stucture</FONT></DIV>
<DIV><FONT size=2>in my application in order to display </FONT><FONT size=2>more
than one graphics </FONT></DIV>
<DIV><FONT size=2>windows at once. The original code is stolen from that vtkMFC
demo.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>In each window I use a vtkActor to draw a 3d mesh
and some other</FONT></DIV>
<DIV><FONT size=2>2d actors to draw labels, coordinates,etc.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>When one window is covered with another window, and
</FONT><FONT size=2>if I close the</FONT></DIV>
<DIV><FONT size=2>window in front of it, of course, the window behind it will
appear, </FONT></DIV>
<DIV><FONT size=2>but it will </FONT><FONT size=2>lose the 3d mesh, although the
labels and some other 2d</FONT></DIV>
<DIV><FONT size=2>elements are still there. This only happens when the 3d mesh
in the</FONT></DIV>
<DIV><FONT size=2>behind window is completely covered by the front
window.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>It seems that this has something to do with the render
buffer.</FONT></DIV>
<DIV><FONT size=2>Cause I am not familiar with Windows, I wonder if anyone can
tell me</FONT></DIV>
<DIV><FONT size=2>how to solve this problem. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Any help will be appreciate.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Bati</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
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