timed_msgbox.cpp

funambol windows mobile plugin source code, the source code is taken from the funambol site

/*
 * Copyright (C) 2003-2007 Funambol, Inc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY, TITLE, NONINFRINGEMENT or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307  USA
 */
#include <windows.h>
#include "notify/timed_msgbox.h"

static HWND g_hwndTimedOwner;
static BOOL g_bTimedOut;


/**
 *
 *  MessageBoxTimer
 *
 *      The timer callback function that posts the fake quit message.
 *      This function causes the message box to exit because the message box
 *      has determined that the application is exiting.
 *
 */
static void CALLBACK MsgBoxTimer(HWND hw, UINT uiMsg, UINT idEv, DWORD time)
{
   g_bTimedOut = TRUE;
   if (g_hwndTimedOwner)
      EnableWindow(g_hwndTimedOwner, TRUE);
   PostQuitMessage(0);
}


/**
 *
 *  TimedMessageBox
 *
 *      The same as the standard MessageBox, except that TimedMessageBox
 *      also accepts a timeout. If the user does not respond within the
 *      specified timeout, the value 0 is returned instead of one of the
 *      ID* values.
 *
 */
int TimedMessageBox(HWND hwndOwner,
                    LPCTSTR pszMessage,
                    LPCTSTR pszTitle,
                    UINT flags,
                    DWORD dwTimeout)
{
   UINT idTimer;
   int iResult;

   g_hwndTimedOwner = NULL;
   g_bTimedOut = FALSE;

   if (hwndOwner && IsWindowEnabled(hwndOwner))
      g_hwndTimedOwner = hwndOwner;

   //
   // Set a timer to dismiss the message box.
   idTimer = SetTimer(NULL, 0, dwTimeout, (TIMERPROC)MsgBoxTimer);

   iResult = MessageBox(hwndOwner, pszMessage, pszTitle, flags);

   //
   // Finished with the timer.
   KillTimer(NULL, idTimer);

   //
   // See if there is a WM_QUIT message in the queue if we timed out.
   // Eat the message so we do not quit the whole application.
   if (g_bTimedOut)
   {
      MSG msg;
      PeekMessage(&msg, NULL, WM_QUIT, WM_QUIT, PM_REMOVE);
      iResult = -1;
   }

   return iResult;
}