#import "MyObject.h" 

@implementation  MyObject

- ( IBAction )myAction:( id )sender
{
NSError *error = [NSError errorWithDomain: @"NSOSStatusErrorDomain" 
code: -10 
userInfo:[NSDictionary dictionary]
];


NSAlert *alert = [NSAlert alertWithError:error];
// 表示します、 
[alert beginSheetModalForWindow:[sender window]
modalDelegate: self 
didEndSelector: @selector (endAlert)
contextInfo: nil 
];

}
// 閉じる時の処理 
-( void )endAlert
{
NSLog( @"end" );
}

@end