cursor-position

Arguments: window-or-screen

Returns the current mouse cursor position within window-or-screen. The screen is the value returned by (screen *system*). See screen and *system*.

The setf of this function may be called to move the mouse cursor programmatically. This may be useful, for example, for moving the mouse cursor to the center of an object that the user is about to drag. On the other hand, such programmatic moves can be annoying to a user with a physical (rather than a touch) mouse because such a user might have to lift the physical mouse in order to once again make the the physical mouse's range of movement match the mouse cursor's range on the screen. (If the physical mouse is near the edge of the desk and the cursor jumps to the top of the screen programmatically, the user cannot bring it back to the bottom without lifting the mouse and repositioning it on the desk.)

See also ncursor-position.

GTK Note

Calling (setf cursor-position) on the GTK platform will simply invoke the *gtk-compatibility-warning-action*. There appears to be no way in the X world to programmatically move the mouse cursor.

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Created 2010.1.21.