对于Windows Embedded Standard 7上的WinForms应用程序，如何在c＃中检测设备是否启用了触控功能

Question

下面的代码在Windows 7上运行正常，但在Windows Embedded Standard 7上运行不正常：

[System.Runtime.InteropServices.DllImport("user32.dll")]
    public static extern int GetSystemMetrics(int nIndex);

    public static bool isTouchEnabled()
    {
        int MAXTOUCHES_INDEX = 0x95;
        int maxTouches = GetSystemMetrics(MAXTOUCHES_INDEX);

        return maxTouches > 0;
    }

Answer 1

你可以试试这个：

var hasTouch = Windows.Devices.Input
              .PointerDevice.GetPointerDevices()
              .Any(p => p.PointerDeviceType == Windows.Devices.Input.PointerDeviceType.Touch);

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