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开发学院软件开发VC VC启动窗口画面制作方法研究 阅读

VC启动窗口画面制作方法研究

 2010-06-27 20:40:34 来源:WEB开发网   
核心提示: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 _SP

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
{
// Construction
public:
   CSplashWnd(LPCTSTR lpszFileName);
// Operations
public:
   BOOL ShowSplash();
   BOOL PreTranslateAppMessage(MSG* pMsg); 
   void ShowText(LPCTSTR lpStr);
   void CloseSplash();
// Overrides
   // ClassWizard generated virtual function overrides
   //{{AFX_VIRTUAL(CSplashWnd)
   //}}AFX_VIRTUAL
// Implementation
public:
   ~CSplashWnd();
   virtual void PostNcDestroy();
private:
   BOOL Create(CWnd* pParentWnd = NULL);
// Generated message map functions
private:
   //{{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;
};
#endif
6.2 Splash.cpp ///////////////////////////////////////////////////////////////////////////////
//Written by Liu Zhengxi
//May 5,2003
//Compiles with Visual C++ 6.0 for Windows 98 and probably Windows 2000
// too.
/////////////////////////////////////////////////////////////////////////////
//
// Splash.cpp : implementation file
//
#include <atlbase.h>
#include <afxwin.h>
#include <afxpriv2.h>
#include "stdafx.h" // e. g. stdafx.h
#include "Splash.h" // e.g. splash.h
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
//  CSplashWnd class
////////////////////////////////////////////////////////////////////////////
//constructor
//Load image from the given file
//
CSplashWnd::CSplashWnd(LPCTSTR lpszFileName)
{
    fileIsValid = pic.Load(lpszFileName);
    if(fileIsValid)
    {
       CSize cz = pic.GetImageSize(NULL);
       width = cz.cx;
       height = cz.cy;
    }
}
////////////////////////////////////////////////////////////////////////////////
//nothing to do
//deconstructor
//
CSplashWnd::~CSplashWnd()
{
}
////////////////////////////////////////////////////////////////////////////////
//message map
//
BEGIN_MESSAGE_MAP(CSplashWnd, CWnd)
    //{{AFX_MSG_MAP(CSplashWnd)
    ON_WM_CREATE()
    ON_WM_PAINT()
    ON_WM_TIMER()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()
////////////////////////////////////////////////////////////////////////////////
//ShowSplash
//to display the given image on screen
//
BOOL CSplashWnd::ShowSplash()
{
    if(fileIsValid)
    {
       if (!Create(AfxGetMainWnd()))
           return false;
       else
       {
           UpdateWindow();
           return true;
       }
    }
    else
    {
       return false;
    }
}
////////////////////////////////////////////////////////////////////////////////
//PreTranslateAppMessage
//
BOOL CSplashWnd::PreTranslateAppMessage(MSG* pMsg)
{
    // If we get a keyboard or mouse message, hide the splash screen.
    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)
    {
       CloseSplash();
       return TRUE; // message handled here
    }
    return FALSE;   // message not handled
}
////////////////////////////////////////////////////////////////////////////////
//Create
//make a popup splash window
//
BOOL CSplashWnd::Create(CWnd* pParentWnd /*= NULL*/)
{
    return CreateEx(0,
       AfxRegisterWndClass(0, AfxGetApp()->LoadStandardCursor(IDC_ARROW)),
       NULL, WS_POPUP | WS_VISIBLE, 0, 0, width, height, pParentWnd->GetSafeHwnd(), NULL);
}
////////////////////////////////////////////////////////////////////////////////
//CloseSplash
//Quit the splash window
//
void CSplashWnd::CloseSplash()
{
    // Destroy the window, and update the mainframe.
    DestroyWindow();
}
////////////////////////////////////////////////////////////////////////////////
//do nothing
//
void CSplashWnd::PostNcDestroy()
{
}
////////////////////////////////////////////////////////////////////////////////
//OnCreate
//put the splash window on center
//
int CSplashWnd::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CWnd::OnCreate(lpCreateStruct) == -1)
       return -1;
    // Center the window.
    CenterWindow();
    return 0;
}
////////////////////////////////////////////////////////////////////////////////
//OnPaint
//Display the given image
//
void CSplashWnd::OnPaint()
{
  CPaintDC dc(this);
  CRect rc(0,0,0,0);;
  pic.Render(&dc, rc);
}
////////////////////////////////////////////////////////////////////////////////
//ShowText
//sometimes if we show what we are doing (I display the information on the center of //the picture ), the customer will be more //patient
//
//
void CSplashWnd::ShowText(LPCTSTR lpStr)
{
    Invalidate();
    CPaintDC dc(this);
    dc.SetBkMode(TRANSPARENT);
    SIZE sz;
    sz = (SIZE)dc.GetTextExtent(lpStr,strlen(lpStr));
    dc.TextOut((width-sz.cx)/2,height/2,lpStr);
}
////////////////////////////////////////////////////////////////
// MSDN Magazine — October 2001
// If this code works, it was written by Paul DiLascia.
// If not, I don''t know who wrote it.
// Compiles with Visual C++ 6.0 for Windows 98 and probably Windows 2000
// too.
// Set tabsize = 3 in your editor.
//
////////////////////////////////////////////////////////////////
// CPicture implementation
//
CPicture::CPicture()
{
}
CPicture::~CPicture()
{
}
//////////////////
// Load from resource. Looks for "IMAGE" type.
//
BOOL CPicture::Load(UINT nIDRes)
{
  // find resource in resource file
  HINSTANCE hInst = AfxGetResourceHandle();
  HRSRC hRsrc = ::FindResource(hInst,
   MAKEINTRESOURCE(nIDRes),
   "IMAGE"); // type
  if (!hRsrc)
   return FALSE;
  // load resource into memory
  DWORD len = SizeofResource(hInst, hRsrc);
  BYTE* lpRsrc = (BYTE*)LoadResource(hInst, hRsrc);
  if (!lpRsrc)
   return FALSE;
  // create memory file and load it
  CMemFile file(lpRsrc, len);
  BOOL bRet = Load(file);
  FreeResource(hRsrc);
  return bRet;
}
//////////////////
// Load from path name.
//
BOOL CPicture::Load(LPCTSTR pszPathName)
{
  CFile file;
  if (!file.Open(pszPathName, CFile::modeRead|CFile::shareDenyWrite))
   return FALSE;
  BOOL bRet = Load(file);
  file.Close();
  return bRet;
}
//////////////////
// Load from CFile
//
BOOL CPicture::Load(CFile& file)
{
  CArchive ar(&file, CArchive::load | CArchive::bNoFlushOnDelete);
  return Load(ar);
}
//////////////////
// Load from archive—create stream and load from stream.
//
BOOL CPicture::Load(CArchive& ar)
{
  CArchiveStream arcstream(&ar);
  return Load((IStream*)&arcstream);
}
//////////////////
// Load from stream (IStream). This is the one that really does it: call
// OleLoadPicture to do the work.
//
BOOL CPicture::Load(IStream* pstm)
{
  Free();
  HRESULT hr = OleLoadPicture(pstm, 0, FALSE,
   IID_IPicture, (void**)&m_spIPicture);
  ASSERT(SUCCEEDED(hr) && m_spIPicture);
  return TRUE;
}
//////////////////
// Get image size in pixels. Converts from HIMETRIC to device coords.
//
CSize CPicture::GetImageSize(CDC* pDC) const
{
  if (!m_spIPicture)
   return CSize(0,0);
  LONG hmWidth, hmHeight; // HIMETRIC units
  m_spIPicture->get_Width(&hmWidth);
  m_spIPicture->get_Height(&hmHeight);
  CSize sz(hmWidth,hmHeight);
  if (pDC==NULL) {
   CWindowDC dc(NULL);
   dc.HIMETRICtoDP(&sz); // convert to pixels
  } else {
   pDC->HIMETRICtoDP(&sz);
  }
  return sz;
}
//////////////////
// Render to device context. Covert to HIMETRIC for IPicture.
//
BOOL CPicture::Render(CDC* pDC, CRect rc, LPCRECT prcMFBounds) const
{
  ASSERT(pDC);
  if (rc.IsRectNull()) {
   CSize sz = GetImageSize(pDC);
   rc.right = sz.cx;
   rc.bottom = sz.cy;
  }
  long hmWidth,hmHeight; // HIMETRIC units
  GetHIMETRICSize(hmWidth, hmHeight);
  m_spIPicture->Render(*pDC, rc.left, rc.top, rc.Width(), rc.Height(),
   0, hmHeight, hmWidth, -hmHeight, prcMFBounds);
  return TRUE;
}

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