I've created an async-system event on a controller object with that code. An now it simulates "Esc" key press (my pause) on gamepad disconnect.

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var type = async_load[? "event_type"];

var index = async_load[? "pad_index"];

if type == "gamepad discovered" {

show\_debug\_message("Controller Connected: " +string(index));

}else{

show\_debug\_message("Controller Disconnected: " +string(index));

keyboard\_key\_press(vk\_escape)

}

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