nanogui: Thread: Window Repainted with colour of overlapping window

Dear Greg,

I am using Microwindows on Linux Fedora core 6,

I set the window property to No background using this code,

        props.flags = GR_WM_FLAGS_PROPS;
        props.props = GR_WM_PROPS_NOBACKGROUND;
        GrSetWMProperties (Window_ID, &props);

  but whenever this window is overlaped by some other window it gets
repainted by that overlapping window colour.

 Please help me if you know the solution?

Thanks & Regards
Hiimsa

:  but whenever this window is overlaped by some other window it gets
: repainted by that overlapping window colour.

That is proper behaviour.  By setting a window property bit to
NOBACKGROUND, the system won't automatically paint
a background for it.  However, when a window overlaps that
window, of course it will be fully displayed on top of it.  When
that overlapping window is removed, the original window will
be sent an EXPOSE event, without clearing the background.
That window is fully responsible to paint its window contents.

Regards,

Greg