Question

Let’s say I have a button.. how can I distinguish between single click and double click if they both call my IBAction? Is there a way to know which event caused the call, or to set up different actions, one for each type of event?

Answer 1

EDIT:

In Cocoa, afaik, each control has a kind of “fixed” event it responds to. To manage double clicks, you should override the methods mouseUp or mouseDown, where you will get the information about the number of clicks.

- (void)mouseUp:(NSEvent*)event {
    NSInteger count = [event clickCount];
    <do_something_depending_on:count];
}

OLD ANSWER:

You can define multiple IBActions associated to the same control by displaying the actions tab for your control in Interface Builder and then connecting the proper event type to your controller action. Have a look at the attached image, hope it makes clearer. It displays the events available for button.