Specifies the behavior of push button command cancellation.
When set to 0 - On button down, the button down command is executed, and the button up command is executed only if the mouse button is released while the mouse cursor is on top of the button.
When set to 1 - The behavior of command cancellation is determined by the configuration of the button. If you have configured a down command then the up command cannot be cancelled. If you have not configured a down command the up command can be cancelled.
When set to 2 - Command cancellation is disabled. Irrespective of how the button was configured, the up command cannot be cancelled.
Allowable Values: 0, 1, 2
Default Value: 1