可可：为什么事件未运行？

Question

NSLog(@"ss") execution.Why the event is not running ?

-(void)mouseUp:(NSEvent *)theEvent{
    switch (self.tag) {
        case 3:
            NSLog(@"ss");
            [self setAction:@selector(openurl:)];
            break;
        default:
            break;
    }
}

- (IBAction)openurl:(id)sender {
    [[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:@"http://www.google.com/"]];
}

Answer 1

Your code is setting the action, but not sending it. Setting the action just tells the control what action to send when something happens. And since you seem to also be overriding -mouseUp: , the control's normal event processing for mouse ups won't happen and the action may never be sent.