The Windows port of GTK is an implementation of GDK (and therefore GTK) on top of the Win32 API. When compiling GTK on Windows, this backend is the default.
More information about GTK on Windows, including detailed build instructions, binary downloads, etc, can be found online.
The Win32 GDK backend can be influenced with some additional environment variables.
If this variable is set, GTK doesn’t use the Wintab API for tablet support.
If this variable is set, GTK uses the Wintab API for tablet support. This is the default.
By default the “system” cursor theme is used. This makes GTK prefer cursors that Windows currently uses, falling back to Adwaita cursors and (as the last resort) built-in X cursors.
When any other cursor theme is used, GTK will prefer cursors from that theme, falling back to Windows cursors and built-in X cursors.
Theme can be changed by setting
gtk-cursor-theme-name GTK setting. Users
can override GTK settings in the
settings.ini file or at runtime in the
Themes are loaded from normal Windows variants of the XDG locations:
gtk-cursor-theme-size setting is ignored, GTK will use
the cursor size that Windows tells it to use.