大家好，我在Avalonia UI里实现了一个自定义的瞬时按钮——设计逻辑是按下时激活，松开后恢复inactive状态。在PC端用鼠标操作时一切正常，但在触摸设备上碰到了麻烦：如果我在按钮区域内按下，然后拖动到按钮外面再松开，按钮会一直保持激活状态，完全没响应松开事件。

为了解决这个问题，我尝试追踪指针位置，打算在指针移出按钮区域时手动触发释放操作，但发现PointerMovedEvent只在第一次移动时更新了指针位置，后续的移动事件里，获取到的位置始终不变。

以下是我的实现代码：

public MomentaryButton()
{
    AddHandler(PointerPressedEvent, OnPress, RoutingStrategies.Tunnel);
    AddHandler(PointerReleasedEvent, OnRelease, RoutingStrategies.Tunnel);
    AddHandler(PointerCaptureLostEvent, OnRelease, RoutingStrategies.Tunnel);
    AddHandler(PointerMovedEvent, OnPointerMoved, RoutingStrategies.Tunnel);
}

private void OnPress(object? sender, PointerPressedEventArgs e)
{
    if (Disabled) return;
    PressInternal();
    e?.Pointer.Capture(this);
}

private void OnRelease(object? sender, PointerEventArgs e)
{
    if (!IsActive) return;
    ReleaseInternal();
    e?.Pointer.Capture(null);
}

private void OnPointerMoved(object? sender, PointerEventArgs e)
{
    if (!IsActive) return;
    Point point = e.GetCurrentPoint(this).Position;
    Log.Debug("Pointer moved at position: {Position}", point);
}

这是触摸移动时的日志输出，能看到只有最后一条位置有变化，前面的都完全相同：

2025-08-26 10:05:08.690 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.696 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.700 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.706 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.711 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.716 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.721 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.726 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.731 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.736 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.741 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.746 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.751 +02:00 [DBG] Pointer moved at position: 69, 95
2025-08-26 10:05:08.756 +02:00 [DBG] Pointer moved at position: 68, 86

有没有大佬遇到过类似的问题？或者能指点下为什么指针位置不会持续更新，以及怎么解决触摸设备上按钮的这个状态问题？

内容来源于stack exchange