Sets a specific `GdkCursor` for a given device when it gets inside this.
Passing null for the cursor
argument means that this
will use the cursor of its parent surface. Most surfaces should use this default.
Use [ctor@Gdk.Cursor.new_from_name] or [ctor@Gdk.Cursor.new_from_texture] to create the cursor. To make the cursor invisible, use gdk_blank_cursor.
this |
a `GdkSurface` |
device |
a pointer `GdkDevice` |
cursor |
a `GdkCursor` |