best way to store an hotkey in preferences

I am wondering about the best way to store a hotkey in preferen开发者_运维知识库ces in a Coco application.

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A hotkey is really just a keyCode+modifierFlags pair that point to some chunk of code to execute. So I'd probably do something like:

[[NSUserDefaults standardUserDefaults] setInteger:myHotKeyKeyCode forKey:@"HotKeyKeyCode"];
[[NSUserDefaults standardUserDefaults] setInteger:myHotKeyModifierFlags forKey:@"HotKeyModifierFlags"];

Then when your app launches again....

NSInteger keyCode = [[NSUserDefaults standardUserDefaults] integerForKey:@"HotKeyKeyCode"];
NSInteger modifierFlags = [[NSUserDefaults standardUserDefaults] integerForKey:@"HotKeyModifierFlags"];

//register the keyCode and modifierFlags to execute some chunk of code