[SOLVED] Is there any onClose event in OpenFL?

Is there any onClose event in OpenFL?

I am using a library which needs to be cleaned up at exit time (i.e. closing a socket so that it does not hang until some timeout) in an OpenFL 2.2.1 application.

However, I could not find any event which is called when I close the window with Alt+F4 or the closing button of the window.

How can I detect that the application is terminating, in order to clean my resources?

Solution

To answer your question about openfl-next, there is the lime.app.Application.onExit event, which it inherits from lime.app.Module. An Application reference is stored in openfl.display.Stage.application instance field.

So, a multi-version variant of the function would be as following:

static function setExitHandler(func:Void->Void):Void {
    #if openfl_legacy
    openfl.Lib.current.stage.onQuit = function() {
        func();
        openfl.Lib.close();
    };
    #else
    openfl.Lib.current.stage.application.onExit.add(function(code) {
        func();
    });
    #end
}

And then you would just

setExitHandler(function() {
    trace("Quit!");
});