[ Version ( since = "3.2" ) ]
public void set_theme_variant (string variant)
GTK+ applications can request a dark theme variant.
In order to make other applications - namely window managers using GTK+ for themeing - aware of this choice, GTK+ uses this function to export the requested theme variant as _GTK_THEME_VARIANT property on toplevel windows.
Note that this property is automatically updated by GTK+, so this function should only be used by applications which do not use GTK+ to create toplevel windows.
| this |
a Window |
| variant |
the theme variant to export |