gtk-fortran
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MSYS2: in examples/hl_sliders.exe and hl_sliders2.exe the bar of the slider is invisible
Describe the bug Under MSYS2, in examples/hl_sliders.exe and hl_sliders2.exe the bar of the slider is invisible (in hl_sliders2.exe it is visible until you move the slider).
Your system:
- OS version: MSYS2 / Windows 10 2009
- Compiler version: gfortran 10.3.0
- GTK branch: gtk4
- GTK 4.2.0 & 4.4.0
Additional context No problem in the gtk3 branch.
It is probably a problem concerning GL and GTK 4 under Windows, as in a VirtualBox without 3D acceleration there is no problem. Tested with GTK 4.6.1
Could be related to that note release for GTK 4.11.1 (03-04-2023):
- Windows:
- Fix problems with WGL
https://gitlab.gnome.org/GNOME/gtk/-/blob/main/NEWS
It is a GL problem. I have just installed MSYS2 and gtk-fortran on another Windows 10 machine, and those examples are working fine.