摘要： 子类化NSWindow:- (void)awakeFromNib{ [selfsetStyleMask:NSBorderlessWindowMask]; [selfsetAcceptsMouseMovedEvents:YES]; [selfsetMovableByWindowBackground:YES]; [selfsetLevel:NSNormalWindowLevel]; [self setOpaque:NO]; [selfsetBackgroundColor:[NSColorclearColor]];}- (BOOL) canBecomeKeyWindow { return... 阅读全文