?? myscrollview.cpp
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// MyScrollView.cpp : implementation of the CMyScrollView class
//
#include "stdafx.h"
#include "MyScroll.h"
#include "MyScrollDoc.h"
#include "MyScrollView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView
IMPLEMENT_DYNCREATE(CMyScrollView, CScrollView)
BEGIN_MESSAGE_MAP(CMyScrollView, CScrollView)
//{{AFX_MSG_MAP(CMyScrollView)
ON_WM_KEYDOWN()
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView construction/destruction
CMyScrollView::CMyScrollView()
{
// TODO: add construction code here
}
CMyScrollView::~CMyScrollView()
{
}
BOOL CMyScrollView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CScrollView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView drawing
void CMyScrollView::OnDraw(CDC* pDC)
{
CMyScrollDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
pDC->TextOut ( 50, 50, "滾動軸實例");
}
void CMyScrollView::OnInitialUpdate()
{
CScrollView::OnInitialUpdate();
CSize sizeTotal;//設置滾動視圖窗口的大小
// TODO: calculate the total size of this view
sizeTotal.cx = sizeTotal.cy = 300;//當窗口寬小于300,高小于300,顯示相應的滾動條
SetScrollSizes(MM_TEXT, sizeTotal);//滾動軸尺寸
}
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView printing
BOOL CMyScrollView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CMyScrollView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CMyScrollView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView diagnostics
#ifdef _DEBUG
void CMyScrollView::AssertValid() const
{
CScrollView::AssertValid();
}
void CMyScrollView::Dump(CDumpContext& dc) const
{
CScrollView::Dump(dc);
}
CMyScrollDoc* CMyScrollView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyScrollDoc)));
return (CMyScrollDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CMyScrollView message handlers
void CMyScrollView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
// TODO: Add your message handler code here and/or call default
switch ( nChar )
{
case VK_HOME:
OnVScroll ( SB_TOP, 0, NULL);
OnHScroll ( SB_LEFT, 0, NULL);
break;
case VK_END:
OnVScroll ( SB_BOTTOM, 0, NULL);
OnHScroll ( SB_RIGHT, 0, NULL);
break;
case VK_UP:
OnVScroll ( SB_LINEUP, 0, NULL);
break;
case VK_DOWN:
OnVScroll ( SB_LINEDOWN, 0, NULL);
break;
case VK_PRIOR:
OnVScroll ( SB_PAGEUP, 0, NULL);
break;
case VK_NEXT:
OnVScroll ( SB_PAGEDOWN, 0, NULL);
break;
case VK_LEFT:
OnHScroll ( SB_LINELEFT, 0, NULL);
break;
case VK_RIGHT:
OnHScroll ( SB_LINERIGHT, 0, NULL);
break;
default:
break;
}
CScrollView::OnKeyDown(nChar, nRepCnt, nFlags);
}
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