VC启动窗口画面制作方法研究[图](2)

 5. 用法

√ 将CSplashWnd类加入项目中

√ 在使用CSplashWnd类的文件中#include “Splash.h”

√ 在合适的位置定义一个CSplashWnd对象

√ 在想显示启动画面的地方调用ShowSplash显示于屏幕上

√ 如果想在启动画面上显示一些初始化或其他提示信息，调用ShowText。

√ 在你想关闭启动画面的地方

在你的App类InitInstance函数中,显示主窗口之前使用，进行上述步骤，这是最典型的用法，如下面代码所示。

BOOL CTsApp::InitInstance(){       AfxEnableControlContainer(); #ifdef _AFXDLL       Enable3dControls();                  // Call this when using MFC in a shared DLL#else       Enable3dControlsStatic();   // Call this when linking to MFC statically#endif       SetRegistryKey(_T("Local AppWizard-Generated Applications"));       LoadStdProfileSettings();  // Load standard INI file options (including MRU)       CSingleDocTemplate* pDocTemplate;       pDocTemplate = new CSingleDocTemplate(              IDR_MAINFRAME,              RUNTIME_CLASS(CTsDoc),              RUNTIME_CLASS(CMainFrame),       // main SDI frame window              RUNTIME_CLASS(CTsView));       AddDocTemplate(pDocTemplate);       CCommandLineInfo cmdInfo;       ParseCommandLine(cmdInfo);       if (!ProcessShellCommand(cmdInfo))              return FALSE; /////////////////////////////////////////////////////////////////////////////////////   CSplashWnd* pCsw = new CSplashWnd("fx.jpg");//located in the local directory,or else full-path file name is needed       pCsw->ShowSplash();       Sleep(750);//delay some time to observe the image displayed.       pCsw->CloseSplash();       delete pCsw;       pCsw = NULL;/////////////////////////////////////////////////////////////////////////////////////       // The one and only window has been initialized, so show and update it.       m_pMainWnd->ShowWindow(SW_SHOW);       m_pMainWnd->UpdateWindow();       return TRUE;}6. 类代码

6.1 Splash.h
///////////////////////////////////////////////////////////////////////////////Written by Liu Zhengxi//May 5,2003//Compiles with Visual C++ 6.0 for Windows 98 and probably Windows 2000 // too./////////////////////////////////////////////////////////////////////////////#ifndef _SPLASH#define _SPLASH#include #include // Splash.h : header file/////////////////////////////////////////////////////////////////////////////////   Splash Screen class#pragma once///////////////////////////////////////////////////////////////////////////// Picture object―encapsulates IPicture//Written by Paul DiLascia.//used to display picture//// declare CPicture class//class CPicture {public:      BOOL Render(CDC* pDC,CRect rc,LPCRECT prcMFBounds=NULL) const;   CPicture();   ~CPicture();   // Load from various resources   BOOL Load(UINT nIDRes);   BOOL Load(LPCTSTR pszPathName);   BOOL Load(CFile& file);   BOOL Load(CArchive& ar);   BOOL Load(IStream* pstm);   // render to device context   CSize GetImageSize(CDC* pDC=NULL) const;   operator IPicture*() {      return m_spIPicture;   }   void GetHIMETRICSize(OLE_XSIZE_HIMETRIC& cx, OLE_YSIZE_HIMETRIC& cy)       const {      cx = cy = 0;      const_cast<CPicture*>(this)->m_hr = m_spIPicture->get_Width(&cx);      ASSERT(SUCCEEDED(m_hr));      const_cast<CPicture*>(this)->m_hr = m_spIPicture->get_Height(&cy);      ASSERT(SUCCEEDED(m_hr));   }   void Free() {      if (m_spIPicture) {         m_spIPicture.Release();      }   }protected:   CComQIPtr<IPicture>m_spIPicture;     // ATL smart pointer to IPicture   HRESULT m_hr;                        // last error code};///////////////////////////////////////////////////////////////////////declare CSplashWnd//class CSplashWnd : public CWnd{// Constructionpublic:      CSplashWnd(LPCTSTR lpszFileName);// Operationspublic:      BOOL ShowSplash();      BOOL PreTranslateAppMessage(MSG* pMsg);         void ShowText(LPCTSTR lpStr);      void CloseSplash();// Overrides      // ClassWizard generated virtual function overrides      //{{AFX_VIRTUAL(CSplashWnd)      //}}AFX_VIRTUAL// Implementationpublic:      ~CSplashWnd();      virtual void PostNcDestroy();private:      BOOL Create(CWnd* pParentWnd = NULL);// Generated message map functionsprivate:      //{{AFX_MSG(CSplashWnd)      afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);      afx_msg void OnPaint();      //}}AFX_MSG      DECLARE_MESSAGE_MAP()private:      int height;//the height of the displayed picture      int width;//the width of the displayed picture      CPicture pic;//used to operate the picture   BOOL fileIsValid;};#endif6.2 Splash.cpp