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6. 类代码
6.1 Splash.h
/////////////////////////////////////////////////////////////////////////////
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.
/////////////////////////////////////////////////////////////////////////////
#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///////////////////////////////////////////////////////////////////////////////
//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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