VC创建定时关闭的MessageBox

1、第一种方法：用微软提供的官方文档From : /kb/181934/en-us/Generally, when you want to display a message box for a limited amount of time, you must implement a regular dialog box that closes itself after a specified amount of time. The problem with this method is that you lose the standard message box functionality that Windows provides.The following example shows how to use the MessageBox function to cre ate a message box that automatically closes after a specified amount of ti me. Note the following about the example:∙The example uses a Windows timer that fires an event after the spe cified amount of time has elapsed.∙When the timer event occurs, the PostQuitMessage API is used to break out of the modal message loop that MessageBox uses.∙Note The WM_QUIT message must be removed from the message queue to prevent it from being retrieved in the main message queue.view plaincopy to clipboardprint?1./***********************************************************************2. THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF3. ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO4. THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A5. PARTICULAR PURPOSE.6.7. Copyright 1998 Microsoft Corporation. All Rights Reserved.8.***********************************************************************/9.10./***********************************************************************11.*12.* MsgBox.c13.*14.* Abstract:15.*16.* Sample program to demonstrate how a program can display a17.* timed message box.18.*19.***********************************************************************/20.21.#define STRICT22.#include <windows.h>23.24./***********************************************************************25.*26.* Overview27.*28.* The key to creating a timed message box is exiting the dialog29.* box message loop internal to the message box. Because the30.* message loop for a message box is part of USER, you cannot31.* modify the message loop without using hooks and other such methods.32.*33.*34.* However, all message loops exit when they receive a35.* WM_QUIT message. Additionally, if a nested message loop36.* receives a WM_QUIT message, the nested message loop must break37.* the loop and then re-post the quit message so that the next38.* outer layer can process it.39.*40.* Therefore, you can make the nested message loop exit by41.* calling the PostQuitMessage function. The nested message loop will42.* clean up and post a new quit message. When the MessageBox43.* returns, you peek to see if there is a quit message. If so,44.* it means that the message loop was abnormally terminated.45.* You also consume the WM_QUIT message instead of re-posting it46.* so that the application continues to run.47.*48.* Essentially, you have "tricked" the nested message loop into49.* determining that the application is terminating. When the quit message50.* returns, you consume the quit message. This method effectively cancels51.* the fake quit message that you generated.52.*53.***********************************************************************/54.55./***********************************************************************56.*57.* Global variables58.*59.***********************************************************************/60.61.HWND g_hwndTimedOwner;62.BOOL g_bTimedOut;63.64./***********************************************************************65.*66.* MessageBoxTimer67.*68.* The timer callback function that posts the fake quit message.69.* This function causes the message box to exit because the message box70.* has determined that the application is exiting.71.*72.***********************************************************************/73.void CALLBACK MessageBoxTimer(HWND hwnd,74.UINT uiMsg,75.UINT idEvent,76.DWORD dwTime)77.{78. g_bTimedOut = TRUE;79. if (g_hwndTimedOwner)80. EnableWindow(g_hwndTimedOwner, TRUE);81. PostQuitMessage(0);82.}83.84./***********************************************************************85.*86.* TimedMessageBox87.*88.* The same as the standard MessageBox, except that TimedMessageBox89.* also accepts a timeout. If the user does not respond within the90.* specified timeout, the value 0 is returned instead of one of the91.* ID* values.92.*93.***********************************************************************/94.int TimedMessageBox(HWND hwndOwner,95.LPCTSTR pszMessage,96.LPCTSTR pszTitle,97.UINT flags,98.DWORD dwTimeout)99.{100.UINT idTimer;101.int iResult;102.103. g_hwndTimedOwner = NULL;104. g_bTimedOut = FALSE;105.106. if (hwndOwner && IsWindowEnabled(hwndOwner))107. g_hwndTimedOwner = hwndOwner;108.109. // Set a timer to dismiss the message box.110. idTimer = SetTimer(NULL, 0, dwTimeout, (TIMERPROC)MessageBoxT imer);111.112. iResult = MessageBox(hwndOwner, pszMessage, pszTitle, flags); 113.114. // Finished with the timer.115. KillTimer(NULL, idTimer);116.117. // See if there is a WM_QUIT message in the queue if we timed out.118. // Eat the message so we do not quit the whole application.119. if (g_bTimedOut)120. {121. MSG msg;122. PeekMessage(&msg, NULL, WM_QUIT, WM_QUIT, PM_REMOVE); 123. iResult = -1;124. }125.126. return iResult;127.}128.129./******************************************************** ***************130.*131.* WinMain132.*133.* Program entry point. Demonstrate TimedMessageBox().134.*135.******************************************************** ***************/136.int WINAPI WinMain(HINSTANCE hinst,137.HINSTANCE hinstPrev,138.LPSTR pszCmdLine,139.int nCmdShow)140.{141.142.UINT uiResult;143.144. // Ask the user a question. Give the user five seconds to 145. // answer the question.146. uiResult = TimedMessageBox(NULL,147. "Does a triangle have three s ides?",148. "Quiz",149. MB_YESNO,150. // NULL first parameter is important.151. 5000);152.153. switch (uiResult) {154. case IDYES:155. MessageBox(NULL,156. "That's right!",157. "Result",158. MB_OK);159. break;160.161. case IDNO:这种山寨版的效果，确实看起来有些猥琐....3、源码下载(SDK、MFC共两种)官方下载：/source/1808835网盘下载：/files/c07e4600-ce99-11de-82ad-001422 1b798a/。