WPF 中鼠标坐标系的一些转换

1. 实时获取鼠标相对某一控件的相对坐标关系

    Point p = Mouse.GetPosition(e.Source as FrameworkElement);
　　Point p = (e.Source as FrameworkElement).PointToScreen(pp);

2. 鼠标与屏幕坐标系的获取 

/// <summary>   
/// 设置鼠标的坐标  
/// </summary>  
/// <param name="x">横坐标</param> 
/// <param name="y">纵坐标</param>
[DllImport("User32")]
public extern static void SetCursorPos(int x, int y);
public struct POINT
{
    public int X;
    public int Y;
    public POINT(int x, int y)
    {
        this.X = x;
        this.Y = y;
    }
}

/// <summary>   
/// 获取鼠标的坐标  
/// </summary> 
/// <param name="lpPoint">传址参数，坐标point类型</param>
/// <returns>获取成功返回真</returns>   
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern bool GetCursorPos(out POINT pt);
private void Window_MouseMove(object sender, MouseEventArgs e)
{
    POINT p = new POINT();
    if (GetCursorPos(out p))//API方法
    {
        txtStat.Text = string.Format("X:{0}   Y:{1}", p.X, p.Y);
    }
}

3. 获取子控件相对父控件的位置坐标

GeneralTransform childTransform = child.TransformToAncestor(parent);
Point p = childTransform.Transform(new Point(0, 0));