using System; using System.Collections.Generic; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Threading.Tasks; namespace BWP.WinFormControl { public class WinApiSendMessage { [DllImport("User32.dll", EntryPoint = "SendMessage")] public static extern int SendMessage( int hWnd, // handle to destination window int Msg, // message int wParam, // first message parameter int lParam // second message parameter ); [DllImport("User32.dll", EntryPoint = "FindWindow")] public static extern int FindWindow(string lpClassName, string lpWindowName); } }