swift - 快速在跟踪区域内禁用光标更改

Question

我试图在光标位于视图内时更改光标。问题是光标有时会自动重置为默认值（例如，当出现通知弹出窗口时。）

class DrawingView : NSView{

    override func draw(_ dirtyRect: NSRect) {
        super.draw(dirtyRect)
        
        // Drawing code here.
    }

   override func updateTrackingAreas() {
        let area = NSTrackingArea(rect: self.frame, options: [.cursorUpdate,.activeAlways,.inVisibleRect], owner: self, userInfo: nil)
        self.addTrackingArea(area)
    }

    override func cursorUpdate(with event: NSEvent) {
        NSCursor.crosshair.set()
        NSApp.keyWindow?.disableCursorRects()
    }
        
}

据我所知NSWindow，disableCursorRects()应该阻止光标因其他进程而改变。也许我用错了？