Note that cursor must be for the same display as window.
Use Cursor.newForDisplay or Cursor.newFromPixbuf to
create the cursor. To make the cursor invisible, use GDK_BLANK_CURSOR.
Passing NULL for the cursor argument to Window.setCursor means
that window will use the cursor of its parent window. Most windows
should use this default.
Sets the default mouse pointer for a gdk.Window
Note that cursor must be for the same display as window.
Use Cursor.newForDisplay or Cursor.newFromPixbuf to create the cursor. To make the cursor invisible, use GDK_BLANK_CURSOR. Passing NULL for the cursor argument to Window.setCursor means that window will use the cursor of its parent window. Most windows should use this default.