using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using WindowsInput;

namespace TesteLibrary
{
    public partial class Form1 : Form
    {
        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll")]
        private static extern bool SetForegroundWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        private static extern IntPtr SendMessage(IntPtr hWnd, int Msg,
            IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll", EntryPoint = "WindowFromPoint",
            CharSet = CharSet.Auto, ExactSpelling = true)]
        public static extern IntPtr WindowFromPoint(Point point);

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            IntPtr hWnd = (IntPtr)FindWindow("notepad.exe", null);
            SetForegroundWindow(hWnd);
            //InputSimulator.SimulateKeyPress(VirtualKeyCode.F1);

            var screenPoint = this.PointToScreen(new Point(1210, 460));
            var handle = WindowFromPoint(screenPoint);

            if (handle != IntPtr.Zero)
            {
                SendMessage(handle, 0x0204, IntPtr.Zero, IntPtr.Zero);
                SendMessage(handle, 0x0205, IntPtr.Zero, IntPtr.Zero);
            }

        }
    }
}