On Mon, Aug 12, 2019 at 12:29:30PM -0400, Scott Talbert wrote: > On Mon, 12 Aug 2019, Gunter Königsmann wrote: > > GDK_BACKEND was already set to x11 due to my debugging. If I unset the > > environment variable the problem disappears => Logged in into a > > non-wayland session and the problem appeared again. > > OK, so just to confirm: the problem occurs with X11 but NOT with Wayland?
If so, there's clearly more to it that just wxDC::Clear() not working under X11 with GTK3 - I'm not running wayland and my patched drawing sample showed wxDC::Clear() working. Cheers, Olly