WinMessageBox() Function

rc = WinMessageBox(HWND_DESKTOP,         /* Desktop is parent            */
                   hWnd,                 /* Current window is parent     */
                   pszMsgText,           /* Pointer to message text      */
                   "Open the File"       /* Message title                */
                   0,                    /* Message box identifier       */
                   MB_OKCANCEL   |       /* Include OK & Cancel buttons  */
                   MB_DEFBUTTON1 |       /* Default to OK                */
                   MB_HELP);             /* Include help button          */