MaiTouchSensorEmulator/TouchPanelPositionManager.cs

using System.Runtime.InteropServices;
using System.Windows;

namespace WpfMaiTouchEmulator;

class TouchPanelPositionManager
{
    [DllImport("user32.dll", SetLastError = true)]
    static extern IntPtr FindWindow(string? lpClassName, string lpWindowName);

    [DllImport("user32.dll", SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool GetWindowRect(IntPtr hWnd, out RECT lpRect);

    [StructLayout(LayoutKind.Sequential)]
    public struct RECT
    {
        public int Left;
        public int Top;
        public int Right;
        public int Bottom;
    }

    public Rect? GetSinMaiWindowPosition()
    {
        try
        {
            var hWnd = FindWindow(null, "Sinmai");
            if (hWnd != IntPtr.Zero)
            {
                RECT rect;
                if (GetWindowRect(hWnd, out rect))
                {
                    // Calculate the desired size and position based on the other application's window
                    var width = rect.Right - rect.Left;
                    var height = width;
                    var left = rect.Left + ((rect.Right - rect.Left) - width) / 2; // Center horizontally
                    var top = rect.Bottom - height;
                    return new Rect(left, top, width, height);
                }
            }
        }
        catch (Exception ex)
        {
            Logger.Error("Failed top get sinmai window position", ex);
        }

        return null;
    }
}