转载请注明来源：

　　解决闪屏的问题一定要使用双缓冲技术吗？不是。本文将顺便介绍在没有使用双缓冲的如何解决闪屏的问题。本示例同时介绍文安首尾连接不间断滚动的方法。运行效果截图：

　　FlashButton.cpp代码：

// FlashButton.cpp : implementation file//#include "stdafx.h"#include "ExMain.h"#include "FlashButton.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif/// CFlashButtonCFlashButton::CFlashButton(){	m_arrStr.Add("花开若相惜，花落莫相离。");	m_arrStr.Add("弄花香满衣，拂花叶凄凄。");	m_arrStr.Add("醉言花间意，别情花如依。");	m_arrStr.Add("纵君解花语，霜雪下花篱。");	CString str=m_arrStr.GetAt(0);	m_font.CreateFont(32,0,0,0,FW_BOLD,0,0,0,DEFAULT_CHARSET,0,0,0,0,"华文仿宋");	m_bmp.LoadBitmap(IDB_BITMAP1);	bContinue=TRUE;}CFlashButton::~CFlashButton(){}BEGIN_MESSAGE_MAP(CFlashButton, CButton)	//{
    {AFX_MSG_MAP(CFlashButton)	ON_WM_PAINT()	ON_WM_PARENTNOTIFY()	ON_WM_CLOSE()	ON_WM_DESTROY()	ON_WM_LBUTTONUP()	ON_WM_LBUTTONDOWN()	ON_WM_GETDLGCODE()	//}}AFX_MSG_MAPEND_MESSAGE_MAP()/// CFlashButton message handlersvoid CFlashButton::OnPaint() {	CPaintDC dc(this); // device context for painting		// TODO: Add your message handler code here	CBrush br;	br.CreatePatternBrush(&m_bmp);	CRect rc;	GetClientRect(rc);	dc.FillRect(rc,&br);	// Do not call CButton::OnPaint() for painting messages}void CFlashButton::OnParentNotify(UINT message, LPARAM lParam) {	CWindowDC dc(this);	CSize sizeRow;	if (message=WM_USER+1&&lParam==0)	{		dc.SelectObject(m_font);		GetWindowRect(m_rcLoc);		GetParent()->ScreenToClient(m_rcLoc);		sizeRow=dc.GetOutputTextExtent(m_arrStr[0]);		m_nLineHight=sizeRow.cy;		sizeRow.cy*=4;		m_yBlock2=max(sizeRow.cy,m_rcLoc.Height());		// TODO: Add your message handler code here		AfxBeginThread(DoFlashButtonThread,this);			} 	else	{		CButton::OnParentNotify(message, lParam);	}}UINT DoFlashButtonThread(LPVOID lParam){	CWnd *p=NULL;//父控件窗口	CBrush br;	CRect rc;//父窗口控件大小。	CFlashButton *t=(CFlashButton*)lParam;//本控件	int yBlock1Begin=0,yBlock2Begin=0,i=0;		p=t->GetParent();	p->GetClientRect(rc);	br.CreatePatternBrush(&t->m_bmp);	yBlock2Begin=t->m_yBlock2;	while (t->bContinue)	{		CWindowDC dc(t);		//CDC *dcMem->=new CDC;//执行构造函数		//CDC *dcMem->=(CDC *)calloc(sizeof(CDC),1);//不执行构造函数。		//设定背景		CDC dcMem;		dcMem.CreateCompatibleDC(p->GetDC());		dcMem.SelectObject(t->m_bmp);		dcMem.FillRect(rc,&br);		dcMem.SetBkMode(TRANSPARENT);		dcMem.SetViewportOrg(t->m_rcLoc.left,t->m_rcLoc.top);		dcMem.SelectObject(t->m_font);		//计算绘画位置		yBlock1Begin--;		yBlock2Begin--;		if (yBlock1Begin<-t->m_yBlock2)		{			yBlock1Begin=0;			yBlock2Begin=t->m_yBlock2;		}		//绘制文字		for (i=0;i<4;i++)		{			dcMem.TextOut(0,yBlock1Begin+i*t->m_nLineHight,t->m_arrStr[i]);			dcMem.TextOut(0,yBlock2Begin+i*t->m_nLineHight,t->m_arrStr[i]);		}		//设定输出		dc.BitBlt(0,0,t->m_rcLoc.Width(),t->m_rcLoc.Height(),&dcMem,0,0,SRCCOPY);		Sleep(100);	}		return 0;}void CFlashButton::OnClose() {	// TODO: Add your message handler code here and/or call default	bContinue=FALSE;	CButton::OnClose();}void CFlashButton::OnDestroy() {	bContinue=FALSE;	CButton::OnDestroy();		// TODO: Add your message handler code here	}void CFlashButton::OnLButtonUp(UINT nFlags, CPoint point) {	// TODO: Add your message handler code here and/or call default		CButton::OnLButtonUp(nFlags, point);	Invalidate();}void CFlashButton::OnLButtonDown(UINT nFlags, CPoint point) {	// TODO: Add your message handler code here and/or call default		CButton::OnLButtonDown(nFlags, point);	Invalidate();}UINT CFlashButton::OnGetDlgCode() {	// TODO: Add your message handler code here and/or call default		int n= CButton::OnGetDlgCode();	Invalidate();	return n;}

　　FlashButton.h代码：

#if !defined(AFX_FLASHBUTTON_H__36D25335_C9F2_476B_BCA8_6B63E02DDD19__INCLUDED_)#define AFX_FLASHBUTTON_H__36D25335_C9F2_476B_BCA8_6B63E02DDD19__INCLUDED_#if _MSC_VER > 1000#pragma once#endif // _MSC_VER > 1000// FlashButton.h : header file//#include 
     
      /// CFlashButton windowclass CFlashButton : public CButton{// Constructionpublic:	CFlashButton();// Attributespublic:	CStringArray m_arrStr;	CFont m_font;//字体	int m_yBlock2;//第2块绘制起始位置。	int m_nLineHight;	CRect m_rcLoc;//相对父控件窗口的位置。	BOOL bContinue;//线程是否继续执行。	CBitmap m_bmp;//背景// Operationspublic:// Overrides	// ClassWizard generated virtual function overrides	//{
    {AFX_VIRTUAL(CFlashButton)	//}}AFX_VIRTUAL// Implementationpublic:	virtual ~CFlashButton();	// Generated message map functionsprotected:	//{
    {AFX_MSG(CFlashButton)	afx_msg void OnPaint();	afx_msg void OnParentNotify(UINT message, LPARAM lParam);	afx_msg void OnClose();	afx_msg void OnDestroy();	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);	afx_msg UINT OnGetDlgCode();	//}}AFX_MSG	DECLARE_MESSAGE_MAP()};UINT DoFlashButtonThread(LPVOID lParam);///{
    {AFX_INSERT_LOCATION}}// Microsoft Visual C++ will insert additional declarations immediately before the previous line.#endif // !defined(AFX_FLASHBUTTON_H__36D25335_C9F2_476B_BCA8_6B63E02DDD19__INCLUDED_)
     

　　注释算是写得比较详细吧，相信诸位看了注释之后应该能明白。当然，您也可以使用相同的方法去重载一个CStatic类去实现。方法很多啦。

　　本示例解决闪屏的方法是首先把要显示的界面在内存里画出来。画完了之后一次输出到显存，成功避免了多次修改显存造成的闪屏的问题。