我有一个 NSPanel,我想将其设置为keyWindow
它应该发布NSWindowDidBecomeKeyNotification
,但是即使在调用该makeKeyWindow
方法时,也不会发布通知。下面是我的代码,但我无法弄清楚它有什么问题:
newPanel = [[NSPanel alloc]initWithContentRect:windowRect
styleMask:NSUtilityWindowMask
backing:NSBackingStoreBuffered
defer:FALSE];
[[NSNotificationCenter defaultCenter]addObserver:self
selector:@selector(test:)
name:@"NSWindowDidBecomeKeyNotification"
object:newPanel];
// Create a slider and add to the panel
NSSlider *slider = [[NSSlider alloc]initWithFrame:NSMakeRect(0, 0, windowRect.size.width, windowRect.size.height)];
[[newPanel contentView]addSubview:slider];
// Set window attributes
[newPanel setHasShadow:TRUE];
[newPanel setFloatingPanel:TRUE];
[newPanel setReleasedWhenClosed:TRUE];
[newPanel setHidesOnDeactivate:TRUE];
[newPanel setBecomesKeyOnlyIfNeeded:NO];
[newPanel makeKeyWindow];
[newPanel makeFirstResponder:slider];
[newPanel orderFront:sender];
现在,当我调用[newPanel makeKeyWindow];
NSWindowDidBecomeKeyNotification 时,应该发布并-(void)test:(NSNotification*)aNotification
调用它。但它没有被调用。