cocoa - CGEventPost 鼠标单击后屏幕不刷新

Question

当用户单击某个键盘键(CapsLock)时，我以编程方式生成鼠标单击。因此，我在 CapsLock 打开时按下鼠标左键，然后在关闭 CapsLock 时按下鼠标左键。

这种行为是正确的，例如，如果我将鼠标放在窗口标题栏上，单击 CapsLock，然后移动鼠标，然后单击 CapsLock，窗口会正确移动。即，我正确地“拖动”了窗口，就像在移动鼠标时按住鼠标左键一样。

但是有一个问题 - 当我移动鼠标时窗口不会移动，只有在我第二次单击 CapsLock 后它才会移动到最终位置。即在我“释放”鼠标按钮之后。

我需要做什么才能确保鼠标移动期间刷新屏幕？

有趣的是，我也迷上了

[NSEvent addGlobalMonitorForEventsMatchingMask:NSLeftMouseDraggedMask

发现我的NSLog语句只在我释放鼠标左键(真正的鼠标左键)之后输出

鼠标点击代码在下面，如果需要我可以发布所有代码，没有太多..

// simulate mouse down

// get current mouse pos
CGEventRef ourEvent = CGEventCreate(NULL);
CGPoint point = CGEventGetLocation(ourEvent);
NSLog(@"Location? x= %f, y = %f", (float)point.x, (float)point.y);

CGEventSourceRef source = CGEventSourceCreate(kCGEventSourceStateCombinedSessionState);
CGEventRef theEvent = CGEventCreateMouseEvent(source, kCGEventLeftMouseDown, point, kCGMouseButtonLeft);
CGEventSetType(theEvent, kCGEventLeftMouseDown);
CGEventPost(kCGHIDEventTap, theEvent);
CFRelease(theEvent);


// simulate mouse up

// get current mouse pos
CGEventRef ourEvent = CGEventCreate(NULL);
CGPoint point = CGEventGetLocation(ourEvent);
NSLog(@"Location? x= %f, y = %f", (float)point.x, (float)point.y);

CGEventSourceRef source = CGEventSourceCreate(kCGEventSourceStateCombinedSessionState);
CGEventRef theEvent = CGEventCreateMouseEvent(source, kCGEventLeftMouseUp, point, kCGMouseButtonLeft);
CGEventSetType(theEvent, kCGEventLeftMouseUp);
CGEventPost(kCGHIDEventTap, theEvent);
CFRelease(theEvent);

Answer 1

如果您希望能够拖动窗口，问题是您还需要发布 LeftMouseDragged 事件。

只需调用beginEventMonitoring即可开始监听大写锁定键事件和鼠标移动事件。事件处理程序将根据您的需要模拟鼠标左键按下和移动。这是我博客的链接，您可以在其中下载 Xcode 4 的完整工作示例:http://www.jakepetroules.com/2011/06/25/simulating-mouse-events-in-cocoa

该示例属于公共(public)领域，您可以用它做任何您喜欢的事情。 :)

根据 Apple ( NSEvent documentation ) 的说法，需要在“系统偏好设置”>“通用访问”中选中“启用辅助设备访问”才能正常工作，但我没有选中它，这不是问题。请注意。

如果您还有任何其他问题，请告诉我，我会尽力提供帮助。

// Begin listening for caps lock key presses and mouse movements
- (void)beginEventMonitoring
{
    // Determines whether the caps lock key was initially down before we started listening for events
    wasCapsLockDown = CGEventSourceKeyState(kCGEventSourceStateHIDSystemState, kVK_CapsLock);

    capsLockEventMonitor = [NSEvent addGlobalMonitorForEventsMatchingMask:(NSFlagsChangedMask) handler: ^(NSEvent *event)
    {
        // Determines whether the caps lock key was pressed and posts a mouse down or mouse up event depending on its state
        bool isCapsLockDown = [event modifierFlags] & NSAlphaShiftKeyMask;
        if (isCapsLockDown && !wasCapsLockDown)
        {
            [self simulateMouseEvent: kCGEventLeftMouseDown];
            wasCapsLockDown = true;
        }
        else if (wasCapsLockDown)
        {
            [self simulateMouseEvent: kCGEventLeftMouseUp];
            wasCapsLockDown = false;
        }
    }];

    mouseMovementEventMonitor = [NSEvent addGlobalMonitorForEventsMatchingMask:(NSMouseMovedMask) handler:^(NSEvent *event)
    {
        [self simulateMouseEvent: kCGEventLeftMouseDragged];
    }];
}

// Cease listening for caps lock key presses and mouse movements
- (void)endEventMonitoring
{
    if (capsLockEventMonitor)
    {
        [NSEvent removeMonitor: capsLockEventMonitor];
        capsLockEventMonitor = nil;
    }

    if (mouseMovementEventMonitor)
    {
        [NSEvent removeMonitor: mouseMovementEventMonitor];
        mouseMovementEventMonitor = nil;
    }
}

-(void)simulateMouseEvent:(CGEventType)eventType
{
    // Get the current mouse position
    CGEventRef ourEvent = CGEventCreate(NULL);
    CGPoint mouseLocation = CGEventGetLocation(ourEvent);

    // Create and post the event
    CGEventRef event = CGEventCreateMouseEvent(CGEventSourceCreate(kCGEventSourceStateHIDSystemState), eventType, mouseLocation, kCGMouseButtonLeft);
    CGEventPost(kCGHIDEventTap, event);
    CFRelease(event);
}