credits.cpp

这是书上的代码

#include "stdafx.h"
#include "resource.h"
#include "credits.h"
#include <dos.h>
#include <direct.h>

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

#define SCROLLAMOUNT				-1
#define DISPLAY_SLOW				70
#define DISPLAY_MEDIUM				10
#define DISPLAY_FAST				10
#define DISPLAY_SPEED				30//DISPLAY_MEDIUM

#define RED						RGB(255,0,0)
#define GREEN					RGB(0,255,0)
#define BLUE					RGB(0,0,255)
#define WHITE   				RGB(255,255,255)
#define YELLOW  				RGB(255,255,0)
#define TURQUOISE 				RGB(0,255,255)
#define PURPLE  				RGB(255,0,255)
#define BLACK       			RGB(0,0,0)

#define BACKGROUND_COLOR        BLACK
#define TOP_LEVEL_TITLE_COLOR	RED
#define TOP_LEVEL_GROUP_COLOR   YELLOW
#define GROUP_TITLE_COLOR       TURQUOISE
#define NORMAL_TEXT_COLOR		WHITE

// You can set font heights here to suit your taste
#define TOP_LEVEL_TITLE_HEIGHT	21		
#define TOP_LEVEL_GROUP_HEIGHT  19     
#define GROUP_TITLE_HEIGHT    	17     
#define	NORMAL_TEXT_HEIGHT		15



#define TOP_LEVEL_TITLE			'\n'
#define TOP_LEVEL_GROUP         '\r'
#define GROUP_TITLE           	'\t'
#define NORMAL_TEXT				'\f' 
#define DISPLAY_BITMAP			'\b'

#define ARRAYCOUNT		71
char *pArrCredit[] = { 	"基于线程的多任务 \n",
						"",
						"ZZJTHREADMANGER \n",
						"",
						"",
						"Copyright (c) 2004 \f",
						"",
						"锦州拓新电力电子公司 \f",
						"",
						"All Rights Reserved \f",
						"",
						"",
						"",
						"Serial of Product \t",
						"",
						"",
						"ZZJ2004-0421 \f",
						"",
						"",
						"BITMAP2\b",    // MYBITMAP is a quoted bitmap resource 
						"",
						"",
						"Project Manager \t",
						"",
						"张中军 \f", 
						"",
						"",
						"Program Designer \t",
						"",
						"张中军 \f",
						"",
						"",
						"Engineer \t",
						"",
						"韩琳琳  张中军 \f",
						"",
						"",
						"",
						"Address of Office \t",
						"",
						"辽宁省锦州市凌河区和平路4段6号 \f",
						"",
						"",
						"PostCode \t",
						"",
						"121000 \f",
						"",
						"",
						"Phone \t",
						"",
						"0416-2141880 \f",
						"",
						"",
						"Fax \t",
						"",
						"0416-2124887 \f",
						"",
						"",
						"BITMAP1\b",
						"",
						"",
						"Thank for you to accept our products! \t",
						"",
						"",
						"",
						"",
						"",
						"",
						"",
						""
						};

/////////////////////////////////////////////////////////////////////////////
// CCredits dialog


CCredits::CCredits(CWnd* pParent /*=NULL*/)
	: CDialog(CCredits::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCredits)
	m_total = _T("");
	m_freedisk = _T("");
	//}}AFX_DATA_INIT
}


void CCredits::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCredits)
	DDX_Text(pDX, IDC_TATOL, m_total);
	DDX_Text(pDX, IDC_FREEDISK, m_freedisk);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCredits, CDialog)
	//{{AFX_MSG_MAP(CCredits)
	ON_WM_PAINT()
	ON_WM_TIMER()
	ON_WM_DESTROY()
	ON_WM_LBUTTONUP()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CCredits message handlers

void CCredits::OnOK() 
{
	KillTimer(DISPLAY_TIMER_ID);
	
	CDialog::OnOK();
}

BOOL CCredits::OnInitDialog() 
{
	CDialog::OnInitDialog();
	BOOL bRet;
    UINT nRet;
	
	
	CString strFmt;	
	MEMORYSTATUS MemStat;
	MemStat.dwLength = sizeof(MEMORYSTATUS);
	GlobalMemoryStatus(&MemStat);
	strFmt.LoadString(CG_IDS_PHYSICAL_MEM);
	m_total.Format(strFmt, MemStat.dwTotalPhys / 1024L);
	//m_used.Format(strFmt,MemStat.dwMemoryLoad);///1024L);
	//m_free.Format(strFmt,MemStat.dwAvailPhys);///MemStat.dwTotalPhys*1000);
	//TODO: Add a static control to your About Box to receive the memory
	//      information.  Initialize the control with code like this:
	// SetDlgItemText(IDC_PHYSICAL_MEM, strFreeMemory);

	// Fill disk free information
	struct _diskfree_t diskfree;
	int nDrive = _getdrive(); // use current default drive
	if (_getdiskfree(nDrive, &diskfree) == 0)
	{
		strFmt.LoadString(CG_IDS_DISK_SPACE);
		m_freedisk.Format(strFmt,
			(DWORD)diskfree.avail_clusters *
			(DWORD)diskfree.sectors_per_cluster *
			(DWORD)diskfree.bytes_per_sector / (DWORD)1024L / (DWORD)1024L,
			nDrive-1 + _T('A'));
	}
	else
		m_freedisk.LoadString(CG_IDS_DISK_SPACE_UNAVAIL);
	UpdateData(FALSE);
	nCurrentFontHeight = NORMAL_TEXT_HEIGHT;
	
	CClientDC dc(this); 
	bRet = m_dcMem.CreateCompatibleDC(&dc);
	
	m_bProcessingBitmap=FALSE;
	
	nArrIndex=0;
	nCounter=1;
	nClip=0;
	m_bFirstTime=TRUE;
	m_bDrawText=FALSE;
	m_hBmpOld = 0;
	number=0;	
	
	m_pDisplayFrame=(CWnd*)GetDlgItem(IDC_DISPLAY_STATIC);	

	_ASSERTE(m_pDisplayFrame);
				 
	m_pDisplayFrame->GetClientRect(&m_ScrollRect);


	nRet = SetTimer(DISPLAY_TIMER_ID,DISPLAY_SPEED,NULL);
    _ASSERTE(nRet != 0);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CCredits::OnTimer(UINT nIDEvent) 
{
	if (nIDEvent != DISPLAY_TIMER_ID)
		{
		CDialog::OnTimer(nIDEvent);
		return;
		}

	if (!m_bProcessingBitmap)
	if (nCounter++ % nCurrentFontHeight == 0)	 // every x timer events, show new line
		{
		nCounter=1;
		m_szWork = pArrCredit[nArrIndex++];
		
		if (nArrIndex > ARRAYCOUNT-1)
		{
			
			number++;
			if(number==2)
			{
				KillTimer(DISPLAY_TIMER_ID);
				CDialog::OnOK();
				return;
			}
			nArrIndex=0;
		}
		nClip = 0;
		m_bDrawText=TRUE;
		}
	
	m_pDisplayFrame->ScrollWindow(0,SCROLLAMOUNT,&m_ScrollRect,&m_ScrollRect);
	nClip = nClip + abs(SCROLLAMOUNT);	
	
    CRect r;
    CWnd* pWnd = GetDlgItem(IDC_DISPLAY_STATIC);
    ASSERT_VALID(pWnd);
    pWnd->GetClientRect(&r);
    pWnd->ClientToScreen(r);
    ScreenToClient(&r);
    InvalidateRect(r,FALSE); // FALSE does not erase background

	CDialog::OnTimer(nIDEvent);
}


void CCredits::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	
	PAINTSTRUCT ps;
	CDC* pDc = m_pDisplayFrame->BeginPaint(&ps);
	
	pDc->SetBkMode(TRANSPARENT);
	int flag=0;

	//*********************************************************************
	//	FONT SELECTION
    	CFont m_fntArial;
	CFont* pOldFont;
	BOOL bSuccess;
	
	BOOL bUnderline;
	BOOL bItalic;

	if (!m_szWork.IsEmpty())
	switch (m_szWork[m_szWork.GetLength()-1] )
		{
		case NORMAL_TEXT:
		default:
			bItalic = FALSE;
			bUnderline = FALSE;
			nCurrentFontHeight = NORMAL_TEXT_HEIGHT;
   			bSuccess = m_fntArial.CreateFont(NORMAL_TEXT_HEIGHT, 0, 0, 0, 
   								FW_THIN, bItalic, bUnderline, 0, 
   								ANSI_CHARSET,
                               	OUT_DEFAULT_PRECIS,
                               	CLIP_DEFAULT_PRECIS,
                               	PROOF_QUALITY,
                               	VARIABLE_PITCH | 0x04 | FF_DONTCARE,
                               	(LPSTR)"Arial");
			pDc->SetTextColor(NORMAL_TEXT_COLOR);
			pOldFont  = pDc->SelectObject(&m_fntArial);
			break;

		case TOP_LEVEL_GROUP:
			bItalic = FALSE;
			bUnderline = FALSE;
			nCurrentFontHeight = TOP_LEVEL_GROUP_HEIGHT;
   			bSuccess = m_fntArial.CreateFont(TOP_LEVEL_GROUP_HEIGHT, 0, 0, 0, 
   								FW_BOLD, bItalic, bUnderline, 0, 
   								ANSI_CHARSET,
                               	OUT_DEFAULT_PRECIS,
                               	CLIP_DEFAULT_PRECIS,
                               	PROOF_QUALITY,
                               	VARIABLE_PITCH | 0x04 | FF_DONTCARE,
                               	(LPSTR)"Arial");
			pDc->SetTextColor(TOP_LEVEL_GROUP_COLOR);
			pOldFont  = pDc->SelectObject(&m_fntArial);
			break;
		
		
		
		case GROUP_TITLE:
			bItalic = FALSE;
			bUnderline = FALSE;
			nCurrentFontHeight = GROUP_TITLE_HEIGHT;
   			bSuccess = m_fntArial.CreateFont(GROUP_TITLE_HEIGHT, 0, 0, 0, 
   								FW_BOLD, bItalic, bUnderline, 0, 
   								ANSI_CHARSET,
                               	OUT_DEFAULT_PRECIS,
                               	CLIP_DEFAULT_PRECIS,
                               	PROOF_QUALITY,
                               	VARIABLE_PITCH | 0x04 | FF_DONTCARE,
                               	(LPSTR)"Arial");
			pDc->SetTextColor(GROUP_TITLE_COLOR);
			pOldFont  = pDc->SelectObject(&m_fntArial);
			break;
		
		
		case TOP_LEVEL_TITLE:
			
			bItalic = FALSE;
			bUnderline = TRUE;
			nCurrentFontHeight = TOP_LEVEL_TITLE_HEIGHT;
			bSuccess = m_fntArial.CreateFont(TOP_LEVEL_TITLE_HEIGHT, 0, 0, 0, 
								FW_BOLD, bItalic, bUnderline, 0, 
								ANSI_CHARSET,//DEFAULT_CHARSET,//
	                           	OUT_CHARACTER_PRECIS,CLIP_CHARACTER_PRECIS,
								OUT_DEFAULT_PRECIS,
	                           	CLIP_DEFAULT_PRECIS,
	                           	//DEFAULT_QUALITY,DEFAULT_PITCH|FF_DONTCARE,
								//PROOF_QUALITY,
	                           	//VARIABLE_PITCH | 0x04 | FF_DONTCARE,
	                           	(LPSTR)"华文彩云");//隶书");//The New Times");//
			pDc->SetTextColor(TOP_LEVEL_TITLE_COLOR);
			pOldFont  = pDc->SelectObject(&m_fntArial);
			/*
			bItalic = FALSE;
			bUnderline = TRUE;
			nCurrentFontHeight = TOP_LEVEL_TITLE_HEIGHT;
			bSuccess = m_fntArial.CreateFont(TOP_LEVEL_TITLE_HEIGHT, 0, 0, 0, 
								FW_BOLD, bItalic, bUnderline, 0, 
								ANSI_CHARSET,
	                           	OUT_DEFAULT_PRECIS,
	                           	CLIP_DEFAULT_PRECIS,
	                           	PROOF_QUALITY,
	                           	VARIABLE_PITCH | 0x04 | FF_DONTCARE,
	                           	(LPSTR)"华文彩云");
			pDc->SetTextColor(TOP_LEVEL_TITLE_COLOR);
			pOldFont  = pDc->SelectObject(&m_fntArial);
		    */
			 break;
		case DISPLAY_BITMAP:
			if (!m_bProcessingBitmap)
				{
				CString szBitmap = m_szWork.Left(m_szWork.GetLength()-1);
	   			if (!m_bmpWork.LoadBitmap((const char *)szBitmap))
					{
					CString str; 
					str.Format("Could not find bitmap resource \"%s\". "
                               "Be sure to assign the bitmap a QUOTED resource name", szBitmap); 
					KillTimer(DISPLAY_TIMER_ID); 
					MessageBox(str); 
					return; 
					}
				m_bmpCurrent = &m_bmpWork;
	   			m_bmpCurrent->GetObject(sizeof(BITMAP), &m_bmpInfo);
			
				m_size.cx = m_bmpInfo.bmWidth;	// width  of dest rect
				RECT workRect;
				m_pDisplayFrame->GetClientRect(&workRect);
				m_pDisplayFrame->ClientToScreen(&workRect);
				ScreenToClient(&workRect);
				// upper left point of dest
				m_pt.x = (workRect.right - 
							((workRect.right-workRect.left)/2) - (m_bmpInfo.bmWidth/2));
				m_pt.y = workRect.bottom;
				
				
				pBmpOld = m_dcMem.SelectObject(m_bmpCurrent);
				if (m_hBmpOld == 0)
					m_hBmpOld = (HBITMAP) pBmpOld->GetSafeHandle();
				m_bProcessingBitmap = TRUE;
				}
			flag=1;
			break;

		}
	
	
	CBrush bBrush(BLACK);
	CBrush* pOldBrush;
	pOldBrush  = pDc->SelectObject(&bBrush);
	// Only fill rect comprised of gap left by bottom of scrolling window
	r=m_ScrollRect;
	r.top = r.bottom-abs(SCROLLAMOUNT); 
	pDc->DPtoLP(&r);
	
	if (m_bFirstTime)
		{
		m_bFirstTime=FALSE;
		pDc->FillRect(&m_ScrollRect,&bBrush);
		}
	else
		pDc->FillRect(&r,&bBrush);
	
	r=m_ScrollRect;
	r.top = r.bottom-nClip;
	
	
	if (!m_bProcessingBitmap)
		{
		int x = pDc->DrawText((const char *)m_szWork,m_szWork.GetLength()-1,&r,DT_TOP|DT_CENTER|
					DT_NOPREFIX | DT_SINGLELINE);	
		m_bDrawText=FALSE;
		}
	else
		{
    	dc.StretchBlt( m_pt.x, m_pt.y-nClip, m_size.cx, nClip, 
                   		&m_dcMem, 0, 0, m_bmpInfo.bmWidth-1, nClip,
                   		SRCCOPY );
		if (nClip > m_bmpInfo.bmHeight)
			{
			m_bmpWork.DeleteObject();
			m_bProcessingBitmap = FALSE;
			nClip=0;
			m_szWork.Empty();
			nCounter=1;
			}
		pDc->SelectObject(pOldBrush);
		bBrush.DeleteObject();
		m_pDisplayFrame->EndPaint(&ps);
		return;
		}
	
	pDc->SelectObject(pOldBrush);
	bBrush.DeleteObject();
	
	if (!m_szWork.IsEmpty())
		{
		pDc->SelectObject(pOldFont);
		m_fntArial.DeleteObject();
		}

	m_pDisplayFrame->EndPaint(&ps);
	
	// Do not call CDialog::OnPaint() for painting messages
}

void CCredits::OnDestroy() 
{
	CDialog::OnDestroy();
	
    m_dcMem.SelectObject(CBitmap::FromHandle(m_hBmpOld));
    m_bmpWork.DeleteObject();
	
}

void CCredits::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CDialog::OnLButtonUp(nFlags, point);
	
	KillTimer(DISPLAY_TIMER_ID);
	
	CDialog::OnOK();
	
}