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android的Toast消息框：

通常是显示指定的字符串，三五秒钟之后隐藏消息框。

此对话框功能在android上面用途颇多，当然android上面实现此功能十分简单。

vc则需要自己动手了。

定义一个ToastLabel类，继承自CWnd类。

类包含：一个定时器对象、一个CStatic对象、一个public方法（用以传递参数并启动Toast消息。当然也可以不要，改成在构造函数中传递参数。但是我没有这么做）

public方法中启动定时器，并且New一个CStatic对象，创建对话框。

类的实现如下【类的头文件请自己补全】：

// MsgBox.cpp : implementation file///#include "stdafx.h" //Replace with your PCH file/#include "ToastLabel.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/IMPLEMENT_DYNAMIC(CToastLabel, CWnd)CToastLabel::CToastLabel(CWnd* pParent){	// Create a dummpy child window. It gets attached to this CWnd Object	Create(NULL, 		   "{62BAB41D-B6BB-402C-89EF-5B86830DF68C}", 		   WS_OVERLAPPED, CRect(0,0,0,0),		   pParent,		   1000);	m_bChildCreated = TRUE;	m_Caption = _T("");}CToastLabel::CToastLabel(){	m_bChildCreated = FALSE;	m_Caption = _T("");}CToastLabel::~CToastLabel(){}BEGIN_MESSAGE_MAP(CToastLabel, CWnd)	//{
  {AFX_MSG_MAP(CMsgBox)	ON_WM_TIMER()	//}}AFX_MSG_MAPEND_MESSAGE_MAP()/// CMsgBox message handlersvoid CToastLabel::OnTimer(UINT nIDEvent) {	// TODO: Add your message handler code here and/or call default		BOOL bRetVal = false;	 	if (m_cs->m_hWnd!=NULL)	{		m_cs->DestroyWindow();	}	// Kill the timer	KillTimer(100);	CWnd::OnTimer(nIDEvent);}void CToastLabel::MessageBox(CString sMsg,CRect showRegion, UINT nSleep, bool bAutoClose/*Default is close auto */){	// Save the caption, for finding this 	// message box window later 	// If auto close selected then, start the timer.	if(bAutoClose)		SetTimer(100, nSleep, NULL);		// Show the message box 	m_cs=new CStatic;	if (m_cs->m_hWnd==NULL)	{ 		m_cs->Create(sMsg,WS_CHILD | WS_VISIBLE |SS_CENTER,showRegion,AfxGetApp()->GetMainWnd(),ID_SELFDEFINELABEL);	}	 }// This method called only oncevoid CToastLabel::SetParent(CWnd* pParent){	// Create a dummpy child window. It gets attached to this CWnd Object	if(!m_bChildCreated)	{		Create(NULL, 		   "{62BAB41D-B6BB-402C-89EF-5B86830DF68C}", 		   WS_OVERLAPPED, CRect(0,0,0,0),		   pParent,		   1000);		m_bChildCreated = TRUE;	}}

调用方式如下： 

CToastLabel Msg;Msg.MessageBox("This message box will auto close in 2 sec.", 			new CRect(0,0,200,30), 2000 );

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