active will output a 1 when the Patcher window becomes active (i.e., it is the front-most window and its title bar is highlighted), and output a 0 when the Patcher window becomes inactive. You can use this to change the user interface of your window. For example, messages from the key object can be turned off when the window is made inactive.
Common Box Attributes
|Sharing Max Patchers||Sharing Max Patchers|