#import "Controller.h" 

@implementation  Controller

NSTimer *timer= nil ;

- ( IBAction )pushButton:( id )sender
{
id  aSignature ;
id  invocation ;
SEL  aSelector ;
aSelector = @selector ( timerControl );
aSignature = [ self  methodSignatureForSelector:aSelector ];
invocation = [ NSInvocation invocationWithMethodSignature:aSignature ];
[ invocation setTarget: self  ];
[ invocation setSelector: aSelector ];
[ invocation invoke ];

// アプリケーションを隠す 
[NSApp hide: nil ];

//1 秒後に呼び出す 
timer = [NSTimer scheduledTimerWithTimeInterval: 1 
invocation:invocation
repeats: NO ];

}
-( void ) timerControl{
int  i;
// 繰り返し呼び出す 
i = [NSApp requestUserAttention:NSCriticalRequest];
// 結果表示 
NSLog([NSString stringWithFormat: @"%d" ,i]);
}

@end