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copied!<p>Regarding omitting passing itself as a parameter, do you mean like...</p> <pre><code>- (void) pushedStart : (id) sender { //start game } </code></pre> <p>but you can't do </p> <pre><code>[self pushedStart]; </code></pre> <p>because it needs a parameter? If so, what you can do this:</p> <pre><code>id junkID; [self pushedStart: junkID]; </code></pre> <p>JunkID will initialize to whatever the hell it is an unassigned ID assigns to, so you pass it as a reference and just don't use it for anything, which is good if you want to have a "start game" button but have the game automatically start inside of a timer or whatever else you're doing with your buttons</p> <p>As a side note, and getting more into the guts of cocoa, the way it KNOWS (and what YOU must not forget) is that colon. When you call a function you put the variable after a colon [self eat: food]; </p> <p>When you put together the menu item you set it up with target:self, which makes the button use itself (not the layer "self" you use when you call [self eatABanana]) as a target. The button push of </p> <pre><code>menuButton = target:self selector:@selector(pushButton:) </code></pre> <p>is represented like </p> <pre><code>[self pushButton:menuButton] </code></pre> <p>If you forgot that colon, it's the same as calling a function and not passing the variable, which doesn't give a very helpful error message insofar as it doesn't help you locate where the problem is occurring. I've spent hours upon hours chasing down memory crashes resulting from writing @selector(startGame) instead of @selector(startGame:) in those damn menu buttons. I always feel stupid when I finally figure it out.</p>

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