using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Threading;


namespace drugdrop
{

    class MouseImpersonator
    {
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        private static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, uint dwExtraInfo);

        [Flags]
        public enum  MouseEventFlags:uint
        {
            LEFTDOWN = 0x00000002,
            LEFTUP = 0x00000004,
            MIDDLEDOWN = 0x00000020,
            MIDDLEUP = 0x00000040,
            MOVE = 0x00000001,
            ABSOLUTE = 0x00008000,
            RIGHTDOWN = 0x00000008,
            RIGHTUP = 0x00000010
        }

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool SetCursorPos(int X, int Y);

        private const int leftDown = 0x02;
        private const int leftUp = 0x04;
        public static void Grab(int xPos, int yPos)
        {
            Cursor.Position = new Point(xPos  , yPos );
            mouse_event((uint)MouseEventFlags.LEFTDOWN    , (uint)xPos, (uint)yPos,  0, 0);
        }

        public static void Release(int xPos, int yPos)
        {
            Cursor.Position = new Point(xPos + 25, yPos + 25);
            mouse_event((uint)MouseEventFlags.LEFTUP , (uint)xPos, (uint)yPos, 0, 0);
        }
    
    
}

    class Program
    {
        [DllImport("user32.dll")]  static extern bool SetForegroundWindow(IntPtr hWnd);
        private const int leftDown = 0x02;
        private const int leftUp = 0x04;

         public static IntPtr GetWindowsHandle(string Name)
        {
            IntPtr hWnd = IntPtr.Zero;
            foreach (Process pList in Process.GetProcesses())
            {
                if (pList.MainWindowTitle.Contains(Name))
                {
                    hWnd = pList.MainWindowHandle;
                }
            }
            return hWnd;
        }

    
        static void Main(string[] args)
        {
            IntPtr hwnd = GetWindowsHandle("Мое окно:");
            Thread.Sleep(500);
            if (hwnd!=IntPtr.Zero )
            {
                SetForegroundWindow(hwnd);
                Thread.Sleep(500);
                SetForegroundWindow(hwnd);
                MouseImpersonator.Grab(390,320);
                Thread.Sleep(500);
                MouseImpersonator.Release(500, 472);
          
            }
        }
    }
}

            Cursor.Position = new Point(xPos  , yPos );
            Application.DoEvents();
            Thread.Sleep(200);  
            mouse_event((uint)MouseEventFlags.LEFTDOWN, 0, 0, 0, 0);

            Application.DoEvents();
            mouse_event((uint)MouseEventFlags.MOVE, 0, 0, 0, 0);
            Application.DoEvents();