timed_msgbox.cpp

来自「funambol window mobile客户端源代码」· C++ 代码 · 共 108 行

/*
 * Funambol is a mobile platform developed by Funambol, Inc. 
 * 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 Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 * 
 * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite
 * 305, Redwood City, CA 94063, USA, or at email address [e-mail].
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by Funambol" logo. If the display of the logo is not reasonably
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by Funambol".
 */
#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;
}