nanogui: Thread: How to make a window invisible

Hi,in my application I create two main window which parent is root window,I need dynamic make one window invisible and visible,I want to 
use GrUnmapWindow(wid) to do this,but the result is it only make the
window disable,who can tell me why?
      Thanks a lot!

: Hi,in my application I create two main window which parent is root window,I
need dynamic make one window invisible and visible,I want to
: use GrUnmapWindow(wid) to do this,but the result is it only make the
: window disable,who can tell me why?

Are you running with the nanowm window manager?  If so,
try not running with it.  I have fixed this bug in
the recent CVS.  There was a bug in GrReparentWindow(),
which nanowm calls.

Otherwise, check to make sure what window properties
you might have set on the window.  Send the GrNewWindowEx
parameters or demo program and I can look at it.

Regards,

Greg