Sets the cursor theme from which the images for cursor should be taken.
If the windowing system supports it, existing cursors created with [[email protected]_from_name] are updated to reflect the theme change. Custom cursors constructed with [[email protected]_from_texture] will have to be handled by the application (GTK applications can learn about cursor theme changes by listening for change notification for the corresponding `GtkSetting`).
| this |
a `GdkDisplay` |
| theme |
the name of the cursor theme to use, or null to unset a previously set value |
| size |
the cursor size to use, or 0 to keep the previous size |