Question

我发现mouseDown被调用但不是mouseMoved。如何调用mouseMoved？这是我的代码：

@available(OSX 10.10, *)
class MainView: NSView{
  override var acceptsFirstResponder: Bool { return true }

  override func draw(_ dirtyRect: NSRect){
    titledString.draw(at:NSPoint(x:20,y:40))
  }
  override func mouseDown(with event: NSEvent){
    //print("Mouse down")
    printMouseDown()
  }
  override func mouseMoved(with event: NSEvent){
    //print("Mouse down")
    super.mouseMoved(with:event)
    printMouseMove()
  }
}

这是什么？我怎么能修改代码

P.S。这是驱动程序代码：

@available(OSX 10.10, *)
class AppDelegate: NSObject, NSApplicationDelegate {
  let window = NSWindow()
  func applicationDidFinishLaunching(_ notification: Notification){
    window.setContentSize(NSSize(width:200, height:160))
    window.styleMask = [.titled, .closable, .miniaturizable]
    window.level = 1
    window.title = "Test"
    window.acceptsMouseMovedEvents = true
    window.contentView = MainView()
    window.center()
    window.makeKeyAndOrderFront(window)
  }
}

if #available(OSX 10.10, *){
  let app = NSApplication.shared()
  let appDelegate = AppDelegate()
  app.delegate = appDelegate
  app.run()
}

Answer 1

您必须设置委托：

view.acceptsMouseMovedEvents = YES;

永远不会调用NSView的mouseMoved

1 个答案: