exampleview.cpp

C++编程的实际例子

// ExampleView.cpp : implementation of the CExampleView class
//

#include "stdafx.h"
#include "Example.h"

#include "ExampleDoc.h"
#include "ExampleView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CExampleView

IMPLEMENT_DYNCREATE(CExampleView, CView)

BEGIN_MESSAGE_MAP(CExampleView, CView)
//{{AFX_MSG_MAP(CExampleView)
// NOTE - the ClassWizard will add and remove mapping macros here.
//    DO NOT EDIT what you see in these blocks of generated code!
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CExampleView construction/destruction

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

CExampleView::~CExampleView()
{
}

BOOL CExampleView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	
	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CExampleView drawing

void CExampleView::OnDraw(CDC* pDC)
{
	CExampleDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	if (GetDocument()->GetPathName()!="" )
	{
		HBITMAP bitmap;
		bitmap=(HBITMAP)LoadImage(AfxGetInstanceHandle(),
			GetDocument()->GetPathName(),IMAGE_BITMAP,0,0,
			LR_LOADFROMFILE|LR_CREATEDIBSECTION);
		HBITMAP OldBitmap;
		CDC MemDC;
		MemDC.CreateCompatibleDC(pDC);
		CRect rect;
		GetClientRect(rect);
		OldBitmap=(HBITMAP)MemDC.SelectObject(bitmap);
		pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
		MemDC.SelectObject(OldBitmap);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CExampleView diagnostics

#ifdef _DEBUG
void CExampleView::AssertValid() const
{
	CView::AssertValid();
}

void CExampleView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CExampleDoc* CExampleView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CExampleDoc)));
	return (CExampleDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CExampleView message handlers