[System.Runtime.InteropServices.DllImport("user32.dll",EntryPoint="SendMessage")]
public static extern int SendMessage(int hWnd,int wMsg,int wParam,int lParam);
[System.Runtime.InteropServices.DllImport("user32.dll",EntryPoint="SendMessage")]
public static extern int SendMessage(int hWnd,int wMsg,int wParam,int lParam);