Question

I need to display informative message box in Cocoa Application, which control should i use,
i read the document of NSAlert, but it seems, it will create the modal message box, where i need something, where i will just show a popup for fraction of seconds and will get destroyed after some time by it self.

Answer 1

you could use the NSTimer for auto dismiss.

[self showMyMessage];//put your code in showMyMessage method to show your alert,
NSTimer* myTimer = [NSTimer scheduledTimerWithTimeInterval:60.0 target:self
selector:@selector(callToDismissAlert:) userInfo:nil repeats:NO];

After 60.0 second , iOS will call the below function

-(void) callToDismissAlert:(NSTimer*) t 
{
    [self dismissMyAlert];// put your code in dismissMyAlert method to dismiss your alert,
}