stringvw.cpp

VC++技术内幕(第四版)的实例

// ex18avw.cpp : implementation of the CStringView class
//

#include "stdafx.h"
#include "resource.h"

#include "poemdoc.h"
#include "stringvw.h"

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

/////////////////////////////////////////////////////////////////////////////
// CStringView

IMPLEMENT_DYNCREATE(CStringView, CScrollView)

BEGIN_MESSAGE_MAP(CStringView, CScrollView)
    //{{AFX_MSG_MAP(CStringView)
    ON_WM_CREATE()
    ON_MESSAGE(WM_COMMANDHELP, OnCommandHelp)
    ON_MESSAGE(WM_HELPHITTEST, OnHelpHitTest)
    //}}AFX_MSG_MAP
    // Standard printing commands
    ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
    ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CStringView construction/destruction

CStringView::CStringView()
{
    // TODO: add construction code here
}

CStringView::~CStringView()
{
}

/////////////////////////////////////////////////////////////////////////////
// CStringView drawing

void CStringView::OnDraw(CDC* pDC)
{
    int        i, j, nHeight;
    char       temp[10];
    CFont      font;
    TEXTMETRIC tm;

    CPoemDoc* pDoc = GetDocument();
    // draw a border 8 x 10.5
    pDC->MoveTo(CPoint(0, 0));
    pDC->LineTo(CPoint(11505, 0));
    pDC->LineTo(CPoint(11505, -15105));
    pDC->LineTo(CPoint(0, -15105));
    pDC->LineTo(CPoint(0, 0));
    // draw horizontal and vertical rulers
    for (i = 0; i <= 8; i++) {
      wsprintf(temp, "%02d", i);
      pDC->TextOut(i * 1440, 0, temp);
    }
    for (i = 0; i <= 10; i++) {
      wsprintf(temp, "%02d", i);
      pDC->TextOut(0, -i * 1440, temp);
    }
    // print the poem .5" down and over
    // use Roman 10-point font
    font.CreateFont(-200, 0, 0, 0, 400, FALSE, FALSE, 0, ANSI_CHARSET,
                    OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
                    DEFAULT_PITCH | FF_ROMAN, "Times New Roman");
    CFont* pOldFont = (CFont*) pDC->SelectObject(&font);
    pDC->GetTextMetrics(&tm);
    nHeight = tm.tmHeight + tm.tmExternalLeading;
    j = pDoc->m_stringArray.GetSize();
    for (i = 0; i < j; i++) {
      pDC->TextOut(720, -i * nHeight - 720, pDoc->m_stringArray[i]);
    }
    pDC->SelectObject(pOldFont);
}

/////////////////////////////////////////////////////////////////////////////
// CStringView printing

BOOL CStringView::OnPreparePrinting(CPrintInfo* pInfo)
{
    pInfo->SetMaxPage(1);
    return DoPreparePrinting(pInfo);
}

void CStringView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
    // TODO: add extra initialization before printing
}

void CStringView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
    // TODO: add cleanup after printing
}


void CStringView::OnPrint(CDC* pDC, CPrintInfo* pInfo)
{
    pDC->SetMapMode(MM_TWIPS);
    OnDraw(pDC);
}


/////////////////////////////////////////////////////////////////////////////
// CStringView diagnostics

#ifdef _DEBUG
void CStringView::AssertValid() const
{
    CScrollView::AssertValid();
}

void CStringView::Dump(CDumpContext& dc) const
{
    CScrollView::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CStringView message handlers


int CStringView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CScrollView::OnCreate(lpCreateStruct) == -1)
        return -1;

    CSize totalSize = CSize(11520, 15120);      // 8" x 10.5"
    CSize pageSize = CSize(totalSize.cx / 2,
                           totalSize.cy / 2);   // for page scroll
    CSize lineSize = CSize(totalSize.cx / 100,
                           totalSize.cy / 100); // line scroll
    SetScrollSizes(MM_HIENGLISH, totalSize,
                   pageSize, lineSize);         // CScrollView function

    return 0;
}

/////////////////////////////////////////////////////////////////////////////
// Help Support
LRESULT CStringView::OnCommandHelp(WPARAM wParam, LPARAM lParam)
{
    if (lParam == 0) {
        lParam = HID_BASE_RESOURCE + IDR_STRINGVIEW;
    }
    // context already determined above--we don't modify it
    AfxGetApp()->WinHelp(lParam);
    return TRUE;
}

/////////////////////////////////////////////////////////////////////////////
LRESULT CStringView::OnHelpHitTest(WPARAM wParam, LPARAM lParam)
{
    return HID_BASE_RESOURCE + IDR_STRINGVIEW;
}