Sets the mouse pointer for a GdkWindow. Use gdk_cursor_new_for_display()
or gdk_cursor_new_from_pixmap() to create the cursor. To make the cursor
invisible, use GDK_BLANK_CURSOR. Passing NULL for the cursor argument
to gdk_window_set_cursor() means that window will use the cursor of its
parent window. Most windows should use this default.
Sets the mouse pointer for a GdkWindow. Use gdk_cursor_new_for_display() or gdk_cursor_new_from_pixmap() to create the cursor. To make the cursor invisible, use GDK_BLANK_CURSOR. Passing NULL for the cursor argument to gdk_window_set_cursor() means that window will use the cursor of its parent window. Most windows should use this default.