#71 window flickers forever in multiwindow mode on Windows 10

[Ulrich Sibiller]

The attached code is a small test program that just calls XSetWMNormalHints on reception of an ConfigureNotify event. It will flicker forever if run on an VcXsrv in multiwindow mode:

Windows 10: VcXsrv.exe -multiwindow -ac :123
Linux: DISPLAY=windowmachine:123 flicker

It dows not really matter what values are passed to XSetWMNormalHints, the flickering will always happen. I think there's something wrong in the way WM_NORMAL_HINTS are handled in VcXsrv. It does - however - NOT happen on Windows 7, it has so far only be observed on Windows 10.

[Ulrich Sibiller]

I have just been informed that this also happens on Windows 7.

[Ulrich Sibiller]

Looks like it is fixed in 1.19.6.4. Thanks a lot!