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Delay MessageBox with auto-close option

, , 13 Aug 2002 Ms-PL
This message box delays its dismissal by disabling the OK button for a delay interval. It also has an optional auto-close feature. There are two versions, one uses a WH_CBT hook and some basic window tricks like sub-classing to achieve its goal. The other one is more MFC-ied.
// DelayMsgBoxDemoDlg.cpp : implementation file

#include "stdafx.h"
#include "DelayMsgBoxDemo.h"
#include "DelayMsgBoxDemoDlg.h"
#include "DelayMessageBox.h"
#include "DelayMessageBox2.h"

#ifdef _DEBUG
#define new DEBUG_NEW

// CDelayMsgBoxDemoDlg dialog

CDelayMsgBoxDemoDlg::CDelayMsgBoxDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDelayMsgBoxDemoDlg::IDD, pParent)
	, m_text(_T(""))
	, m_delay(0)
	, m_close(FALSE)
	, m_showicon(FALSE)	
	, m_icon(0)
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

void CDelayMsgBoxDemoDlg::DoDataExchange(CDataExchange* pDX)
	DDX_Text(pDX, IDC_EDIT1, m_text);
	DDX_Text(pDX, IDC_EDIT2, m_delay);
	DDV_MinMaxUInt(pDX, m_delay, 0, 120);
	DDX_Check(pDX, IDC_CHECK1, m_close);
	DDX_Check(pDX, IDC_CHECK2, m_showicon);
	DDX_Radio(pDX, IDC_RADIO1, m_icon);

BEGIN_MESSAGE_MAP(CDelayMsgBoxDemoDlg, CDialog)

// CDelayMsgBoxDemoDlg message handlers

BOOL CDelayMsgBoxDemoDlg::OnInitDialog()

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon

	// TODO: Add extra initialization here
	return TRUE;  // return TRUE  unless you set the focus to a control

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CDelayMsgBoxDemoDlg::OnPaint() 
	if (IsIconic())
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDelayMsgBoxDemoDlg::OnQueryDragIcon()
	return static_cast<HCURSOR>(m_hIcon);

void CDelayMsgBoxDemoDlg::OnBnShow()
	CDelayMessageBox::MBIcon mbicon = CDelayMessageBox::MBIcon::MBICONNONE;

		case 0:
			mbicon = CDelayMessageBox::MBIcon::MBICONINFORMATION;
		case 1:
			mbicon = CDelayMessageBox::MBIcon::MBICONEXCLAMATION;
		case 2:
			mbicon = CDelayMessageBox::MBIcon::MBICONSTOP;
		case 3:
			mbicon = CDelayMessageBox::MBIcon::MBICONQUESTION;

		You may use either of the classes. 
		In behaviour they are identical.
		It's in the implementation that they differ.

	//CDelayMessageBox mbox(this);	
	CDelayMessageBox2 mbox(this);


void CDelayMsgBoxDemoDlg::OnBnClickedOk()

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About the Authors

Software Developer
United States United States

Nish Nishant

United States United States
Nish is a real nice guy who has been writing code since 1990 when he first got his hands on an 8088 with 640 KB RAM. Originally from sunny Trivandrum in India, he has been living in various places over the past few years and often thinks it’s time he settled down somewhere.
Nish has been a Microsoft Visual C++ MVP since October, 2002 - awfully nice of Microsoft, he thinks. He maintains an MVP tips and tricks web site - where you can find a consolidated list of his articles, writings and ideas on VC++, MFC, .NET and C++/CLI. Oh, and you might want to check out his blog on C++/CLI, MFC, .NET and a lot of other stuff -
Nish loves reading Science Fiction, P G Wodehouse and Agatha Christie, and also fancies himself to be a decent writer of sorts. He has authored a romantic comedy Summer Love and Some more Cricket as well as a programming book – Extending MFC applications with the .NET Framework.
Nish's latest book C++/CLI in Action published by Manning Publications is now available for purchase. You can read more about the book on his blog.
Despite his wife's attempts to get him into cooking, his best effort so far has been a badly done omelette. Some day, he hopes to be a good cook, and to cook a tasty dinner for his wife.

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