如何在Windows 10 Universal中使用C＃獲取相對於屏幕的用戶觸摸的X和Y坐標

Question

我在Windows Phone 8中使用了以下代碼：

public partial class MainPage : PhoneApplicationPage  
{  
    // Constructor  
    public MainPage()  
    {  
        InitializeComponent();  
        Touch.FrameReported += Touch_FrameReported;  
    }  
    void Touch_FrameReported(object sender, TouchFrameEventArgs e)  
    {  
        TouchPoint touchPoint = e.GetTouchPoints(this.ContentPanel).FirstOrDefault();  
        if (touchPoint.Action == TouchAction.Up)  
        MessageBox.Show(touchPoint.Position.X + "," + touchPoint.Position.Y);//Displaying x&y co-ordinates of Touch point  
    }  
}

但不適用於Windows 10通用應用程序。

Answer 1

我認為您可以使用以下代碼獲得結果：

    private void _theCanvas_Tapped(object sender, TappedRoutedEventArgs e)
    {
        _pointerDeviceType.Text = e.PointerDeviceType.ToString();
        var position = e.GetPosition(_root);
        _x.Text = position.X.ToString();
        _y.Text = position.Y.ToString();
    }

e.GetPosition（）-Method可幫助您基於另一個控件獲取位置。 包括XAML在內的完整示例代碼位於： https : //github.com/TheOliver/Windows-10-Feature-Demos/blob/master/Windows10FeatureDemos/Windows10FeatureDemos/Samples/HowToGetCoordinatesOfTouchPoints.xaml.cs和此處https：// github.com/TheOliver/Windows-10-Feature-Demos/blob/master/Windows10FeatureDemos/Windows10FeatureDemos/Samples/HowToGetCoordinatesOfTouchPoints.xaml

我希望這有幫助。 奧立佛