How to display a dialog (as in text message, reminder, etc.)

[I'm a Mac]

I have an images that display in my app scaled to fill the whole screen, but the grey top bar with the carrier/time/signal strength indicators cuts of the top of the image. how do I prevent this bar from appearing?

[a5sk4s]

Try

[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];

as seen at http://iphonesdkdev.blogspot.com/2008/06/hide-status-bar.html

[I'm a Mac]

Thanks a lot, it worked. Also, how to I display a dialog box, such as one that appears when you get a reminder, text message, etc.?

[a5sk4s]

I recommend reading UIKit View Classes in the IPhone OS Programming Guide.

[I'm a Mac]

I know how to display a dialog on launch, but what about when the user first touches the screen? I read in the documentation that you use - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
but I don't know you how would combine that with
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:

[a5sk4s]

You can look at http://www.iphonesdkarticles.com/search/label/Touches

[hchung]

I know how to display a dialog on launch, but what about when the user first touches the screen? I read in the documentation that you use - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
but I don't know you how would combine that with
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:

Just as a reminder, you have to consider if you care about whether any of your code happens as the touch happens or as the touch finishes.

Judging by what you said, I'm guessing it doesn't really matter. But if you play around with your mouse cursor or your iphone and some buttons, you'll find that most things get trigger on "mouseUP" or when touches end, as opposed to begin.