MFC中添加SplashScreen

1. 新建一个MFC项目SDI或MDI。

2. 新建或导入一个ID为IDB_SPLASH的位图。

3. 添加现有项SplashWnd.h和SplashWnd.cpp。

SplashWnd.h源代码

#pragma once// CSplashWndclass 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);};

SplashWnd.cpp源代码：

// SplashWnd.cpp : 实现文件//#include "stdafx.h"#include "SplashWindow.h"#include "SplashWnd.h"#include "resource.h"// CSplashWndCSplashWnd* 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 消息处理程序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_BITMAP1) ){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();}

4. 在App主程序实现代码中把上面的头文件包含进去，并在InitInstance函数中添加下面一段代码。

{　　CCommandLineInfo cmdInfo;　　ParseCommandLine(cmdInfo);　　CSplashWnd::EnableSplashScreen(cmdInfo.m_bShowSplash);}

5. 最后，在主框架窗口实现代码中包含Splash头文件，在OnCreate函数return前调用CSplashWnd类的ShowSplashScreen函数即可。

//显示Splash窗口CSplashWnd::ShowSplashScreen(this);

6.在对话框中使用CSplashWnd类

    其实质就是由CDialog类完成SDI工程中CMainFrame类的工作，实现步骤如下：
(1)利用ClassWizard为CMyDialog添加WM_CREATE消息的处理函数OnCreate()；（这里使用CMyDialog是为了与函数内的基类名CDialog区别。）

int CMyDialog::OnCreate(LPCREATESTRUCT lpCreateStruct){if (CDialog::OnCreate(lpCreateStruct) == -1)return -1;CSplashWnd::ShowSplashScreen(this);return 0;} 

(2)利用ClassWizard为CWinApp添加消息转发处理函数PreTranslateMessage()；

BOOL CWinApp::PreTranslateMessage(MSG* pMsg){if (CSplashWnd::PreTranslateAppMessage(pMsg))return TRUE;return CWinApp::PreTranslateMessage(pMsg);}

(3)CWinApp::InitInstance()中加入如下调用： CSplashWnd::EnableSplashScreen(TRUE);
(4)当然你还需要将上一个SDI工程中生成的Splash.CPP与Splash.H文件拷贝到当前工程目录下，并利用Project->Add to Project->Files将这两个文件引入工程。同时还要在CWinApp与CMainFrame的实现文件中#include "Splash.H"。
(5)然后在资源管理器里添加一个ID为IDB_SPLASH的位图。由于VC++的IDE只能显示256色以下的位图，所以如果你想显示一幅真彩色的位图，就请用Import方式导入一幅预先制作好的位图。当然VC++会提示位图已经成功导入，只是无法在IDE的位图编辑器中显示，而在程序运行时就会显示了。如果你想象Word那样显示用户名等信息，可以在CSplashWnd::Create()中装载位图之后增加自己的代码来修改位图。
　　通过以上这几步操作，我们就完成了在基于对话框的工程中加入SplashScreen的工作。