VC++ 轻松实现“闪屏” SplashWnd

　　我们平时使用的好多软件在运行启动时都会有一个“闪屏”画面显示，一般用于标识软件的一些信息，如软件版本名称、公司等，通过查找资料发现，其实实现起来很简单，一个类就能搞定！

SplashWnd.h

 C++ Code 

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#if !defined(AFX_SPLASHWND_H__18C1CB0F_1CFF_483B_872E_E5A78BC1239E__INCLUDED_)
#define AFX_SPLASHWND_H__18C1CB0F_1CFF_483B_872E_E5A78BC1239E__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// SplashWnd.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CSplashWnd window

class CSplashWnd : public CWnd
{
    DECLARE_DYNAMIC(CSplashWnd)

public:
    CSplashWnd();
    virtual ~CSplashWnd();

protected:
    virtual void PostNcDestroy();
    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
    afx_msg void OnTimer(UINT_PTR nIDEvent);
    afx_msg void OnPaint();
    BOOL Create(CWnd* pParentWnd=NULL);
    void HideSplashScreen(void);
    DECLARE_MESSAGE_MAP()

protected:
    CBitmap m_bitmap;
    static CSplashWnd* c_pSplashWnd;
    static BOOL c_bShowSplashWnd;

public:
    static void EnableSplashScreen(BOOL bEnable=TRUE);
    static void ShowSplashScreen(CWnd* pParentWnd=NULL);
    static BOOL PreTranslateAppMessage(MSG* pMsg);
};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_SPLASHWND_H__18C1CB0F_1CFF_483B_872E_E5A78BC1239E__INCLUDED_)

SplashWnd.cpp

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// SplashWnd.cpp : implementation file
//
#include "stdafx.h"
#include "SplashWnd.h"
#include "resource.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CSplashWnd
CSplashWnd* CSplashWnd::c_pSplashWnd;
BOOL CSplashWnd::c_bShowSplashWnd;
IMPLEMENT_DYNAMIC(CSplashWnd, CWnd)

CSplashWnd::CSplashWnd()
{

}

CSplashWnd::~CSplashWnd()
{
    ASSERT(c_pSplashWnd == this);
    c_pSplashWnd = NULL;
}


BEGIN_MESSAGE_MAP(CSplashWnd, CWnd)
    ON_WM_CREATE()
    ON_WM_TIMER()
    ON_WM_PAINT()
END_MESSAGE_MAP()



// CSplashWnd Message handler

void CSplashWnd::EnableSplashScreen(BOOL bEnable)
{
    c_bShowSplashWnd = bEnable;
}

void CSplashWnd::ShowSplashScreen(CWnd* pParentWnd)
{
    if ( !c_bShowSplashWnd || c_pSplashWnd != NULL )
    {
        return;
    }

    c_pSplashWnd = new CSplashWnd;
    if ( !c_pSplashWnd->Create(pParentWnd) )
    {
        delete c_pSplashWnd;
    }
    else
    {
        c_pSplashWnd->UpdateWindow();
    }
}

BOOL CSplashWnd::PreTranslateAppMessage(MSG* pMsg)
{
    if ( c_pSplashWnd == NULL )
    {
        return FALSE;
    }

    if ( pMsg->message == WM_KEYDOWN
        || pMsg->message == WM_SYSKEYDOWN
        || pMsg->message == WM_LBUTTONDOWN
        || pMsg->message == WM_RBUTTONDOWN
        || pMsg->message == WM_MBUTTONDOWN
        || pMsg->message == WM_NCLBUTTONDOWN
        || pMsg->message == WM_NCRBUTTONDOWN
        || pMsg->message == WM_NCMBUTTONDOWN)
    {
        c_pSplashWnd->HideSplashScreen();
        return TRUE;
    }

    return FALSE;
}

void CSplashWnd::PostNcDestroy()
{
    delete this;
}

int CSplashWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if ( CWnd::OnCreate(lpCreateStruct) == -1 )
    {
        return -1;
    }

    CenterWindow();
    SetTimer(1, 3000, NULL);

    return 0;
}

void CSplashWnd::OnTimer(UINT_PTR nIDEvent)
{
    if ( nIDEvent == 1 )
    {
        HideSplashScreen();
    }
}

void CSplashWnd::OnPaint()
{
    CPaintDC dc(this);
    CDC dcImg;
    if ( !dcImg.CreateCompatibleDC(&dc) )
    {
        return;
    }

    BITMAP bm;
    m_bitmap.GetBitmap(&bm);

    CBitmap* pOldBit = dcImg.SelectObject(&m_bitmap);
    dc.BitBlt(0, 0, bm.bmWidth, bm.bmHeight, &dcImg, 0, 0, SRCCOPY);
    dcImg.SelectObject(pOldBit);
}

BOOL CSplashWnd::Create(CWnd* pParentWnd)
{
    if ( !m_bitmap.LoadBitmap(IDB_BITMAP_SPLASH) )
    {
        return FALSE;
    }

    BITMAP bm;
    m_bitmap.GetBitmap(&bm);
    return CreateEx(0,
        AfxRegisterWndClass(0, AfxGetApp()->LoadStandardCursor(IDC_ARROW)),
        NULL,
        WS_POPUP | WS_VISIBLE,
        0, 0,
        bm.bmWidth,
        bm.bmHeight,
        pParentWnd->GetSafeHwnd(),
        NULL);
}

void CSplashWnd::HideSplashScreen()
{
    DestroyWindow();
    AfxGetMainWnd()->UpdateWindow();
}

　　在应用程序类的InitInstance中添加代码：

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CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);
// add EnableSplashScreen
CSplashWnd::EnableSplashScreen(cmdInfo.m_bShowSplash);

　　在应用程序主框架窗口OnCreate中返回之前添加代码：

 C++ Code 

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// Show Splash Window
CSplashWnd::ShowSplashScreen(this);