Close button during modal sheet

In Objective C (Cocoa) I have an app running with a modal sheet, but I want to allow the app to quit even when the sheet is displayed (contradicting the definition of modal I think, but I like the animated effect of modal sheets).

I'm already using the -setPreventsApplicationTerminationWhenModal method and it works fine, but I'm wondering... is there any way to keep the close button enabled? The little circle usually red-colored close button that comes with all windows in the top left corner (side by side with minimize and maximize)? Right now it's co开发者_如何学Pythonmpletely disabled when the sheet is running, and it would be awesome if there is a way to enable it.

Thanks!

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Use a delegate method to close the Modal View. You declare the delegate on your modal view controller and that delegate method dismisses the ModalViewController

In the Modal ViewController Interface File:

@protocol MyViewControllerDelegate
-(void)dismissModal;
@end

Then declare the delegate as a class property in the Modal ViewController:

@property (nonatomic, retain) id <MyViewControllerDelegate> delegate;

Now, declare your parent ViewController as a proper delegate implementer for the Modal ViewController:

@interface MyParentViewController : UIViewController

Then in the calling (parent) ViewController implement the delegate method in the implementation file:

-(void)dismissModal
{   
    // Dismiss the Modal ViewController that we instantiated earlier
    [self dismissModalViewControllerAnimated:YES];
}

That should do it. The advised way to handle this is through delegate methods (and delegate methods are so handy to use whenever a process in one controller needs to fire a method in another controller. It is well worth the time to get familiar with using delegates to get work done in Obj C