RETURNS THE NUMBER OF THE LAST OBJECT ON WHICH A KEY IS RELEASED
ACTION
The system variable NUMBER_KEY_UP returns the number of the last object on which a key is released and -1 if no key is released on an object (initialization).
SYNTAX:
NUMBER_KEY_UP in an expression
USE ERROR EXAMPLE
print number_key_up
NUMBER_KEY_UP
NUMBER_KEY_UP
SEE ALSO
NUMBER_CLICK
NUMBER_CHANGE
NUMBER_KEY_DOWN
OFF_CHANGE
OFF_CLICK
OFF_KEY_DOWN
OFF_KEY_UP
ON_CHANGE
ON_CLICK
ON_KEY_DOWN
ON_KEY_UP