![[previous]](../icons/left.gif){kind=icon}
![[up]](../icons/up.gif){kind=icon}
![[next]](../icons/right.gif){kind=icon}
![[contents]](../icons/contents.gif){kind=icon}
![[index]](../icons/index.gif){kind=icon}
Changes the cursor to a watch cursor for all windows in the current eventspace. Use wx:end-busy-cursor to revert the cursor back to its previous state. Calls to wx:begin-busy-cursor and wx:end-busy-cursor can be nested arbitrarily.
The cursor installed by wx:begin-busy-cursor overrides any window-specific cursors installed with set-cursor.
See also wx:is-busy?.