/// <summary>
/// 使用消息机制模拟触摸
/// <remarks>开启触摸模拟后，原有的 WPF 触摸将会无法再次使用</remarks>
/// <remarks>理论上，不管触摸是否真的失效，禁用后再添加模拟触摸，触摸流程正常</remarks>
/// </summary>
public static void RegisterMessageTouch(Window window)
{
if (ReferenceEquals(window, null))
{
throw new ArgumentNullException(nameof(window));
}
var hWnd = new WindowInteropHelper(window).Handle;
if (hWnd == IntPtr.Zero)
{
throw new InvalidOperationException("请在SourceInitialized之后调用这个方法");
}
//禁用原有WPF触摸
//如果真的触摸失效了，可以不执行禁用逻辑。但是触摸失效判断...emmm可能不准确，所以添加模拟触摸前禁用原有WPF触摸，保证整个触摸流程不重复不缺失。
DisableWpfTouch();
//注册触摸消息
TouchNativeMethods.RegisterTouchWindow(hWnd, TouchNativeMethods.TWF_WANTPALM);
//监听窗口触摸消息
var source = HwndSource.FromHwnd(hWnd);
Debug.Assert(source != null);
source.AddHook((IntPtr hwnd, int msg, IntPtr param, IntPtr lParam, ref bool handled) =>
{
HandleWindowProc(window, msg, param, lParam, ref handled);
return(IntPtr.Zero);
});
}
private void OpenTouchCheckBox_OnClick(object sender, RoutedEventArgs e)
{
var isChecked = OpenTouchCheckBox.IsChecked ?? false;
TouchSupportOperationHelper.HasOpenedTouchFix = isChecked;
if (isChecked)
{
TouchSupportOperationHelper.RegisterMessageTouch(this);
}
var isTouch = TouchNativeMethods.IsTouchWindow(new WindowInteropHelper(this).Handle, 0x00000002);
if (TouchSupportOperationHelper.HasDisabledTouch & TouchSupportOperationHelper.HasOpenedTouchFix)
{
TouchSupportOperationHelper.RegisterMessageTouch(this);
}
}
/// <summary>
/// 处理窗口消息
/// </summary>
/// <param name="window"></param>
/// <param name="msg"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <param name="handled"></param>
private static void HandleWindowProc(Window window, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == TouchNativeMethods.WM_TOUCH)
{
var inputCount = wParam.ToInt32() & 0xffff;
var inputs = new TouchNativeMethods.TOUCHINPUT[inputCount];
if (TouchNativeMethods.GetTouchInputInfo(lParam, inputCount, inputs, TouchNativeMethods.TouchInputSize))
{
for (int i = 0; i < inputCount; i++)
{
var input = inputs[i];
//FakeTouchInputToPenContext0(window, input, inputCount);
//FakeTouchInputToPenContext1(window, input, inputCount);
FakeTouchInputToWindow(window, input);
}
}
TouchNativeMethods.CloseTouchInputHandle(lParam);
handled = true;
}
}
private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
var isTouch = TouchNativeMethods.IsTouchWindow(new WindowInteropHelper(this).Handle, 0x00000002);
}
