c# 如何获取其他软件的控件，相对与该软件窗口的相对位置

在C#中，可以使用以下方法获取其他软件的控件相对于当前窗口的相对位置：

[DllImport("user32.dll")]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll")]
public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

[DllImport("user32.dll")]
public static extern bool GetWindowRect(IntPtr hwnd, out RECT lpRect);

[DllImport("user32.dll")]
public static extern bool ClientToScreen(IntPtr hwnd, ref POINT lpPoint);

public struct RECT
{
    public int Left;
    public int Top;
    public int Right;
    public int Bottom;
}

public struct POINT
{
    public int X;
    public int Y;
}

public void GetControlRelativePosition(string windowTitle, string controlClassName)
{
    IntPtr mainWindowHandle = FindWindow(null, windowTitle);
    if (mainWindowHandle != IntPtr.Zero)
    {
        IntPtr controlHandle = FindWindowEx(mainWindowHandle, IntPtr.Zero, controlClassName, null);
        if (controlHandle != IntPtr.Zero)
        {
            RECT controlRect;
            GetWindowRect(controlHandle, out controlRect);

            POINT relativePosition;
            relativePosition.X = controlRect.Left;
            relativePosition.Y = controlRect.Top;
            ClientToScreen(mainWindowHandle, ref relativePosition);

            int relativeX = relativePosition.X - this.Left;
            int relativeY = relativePosition.Y - this.Top;

            Console.WriteLine("Control relative position: X = {0}, Y = {1}", relativeX, relativeY);
        }
        else
        {
            Console.WriteLine("Control not found.");
        }
    }
    else
    {
        Console.WriteLine("Window not found.");
    }
}

使用示例：

GetControlRelativePosition("OtherWindow", "OtherControl");

请注意，上述代码中的"OtherWindow"和"OtherControl"需要替换为实际的窗口标题和控件类名。