MSYS2: in examples/hl_sliders.exe and hl_sliders2.exe the bar of the slider is invisible

vmagnin / gtk-fortran

A GTK / Fortran binding, and its documentation in the Wiki tab.

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MSYS2: in examples/hl_sliders.exe and hl_sliders2.exe the bar of the slider is invisible #245

Closed vmagnin closed 1 year ago

vmagnin commented 3 years ago

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.

vmagnin commented 2 years ago

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

vmagnin commented 1 year ago

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

vmagnin commented 1 year ago

It is a GL problem. I have just installed MSYS2 and gtk-fortran on another Windows 10 machine, and those examples are working fine.