imagshowview.cpp

来自「VC++6开发指南的源代码第24章-第25章」· C++ 代码 · 共 121 行

// ImagShowView.cpp : implementation of the CImagShowView class
//

#include "stdafx.h"
#include "ImagShow.h"

#include "ImagShowDoc.h"
#include "ImagShowView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CImagShowView

IMPLEMENT_DYNCREATE(CImagShowView, CView)

BEGIN_MESSAGE_MAP(CImagShowView, CView)
	//{{AFX_MSG_MAP(CImagShowView)
		// 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
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CImagShowView construction/destruction

CImagShowView::CImagShowView()
{
	// TODO: add construction code here

}

CImagShowView::~CImagShowView()
{
}

BOOL CImagShowView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CImagShowView drawing

void CImagShowView::OnDraw(CDC* pDC)
{
	CImagShowDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	HGLOBAL hDIB = pDoc->GetHObject();	
	if (hDIB != NULL)							   	// 判断DIB是否为空
	{
		LPSTR lpDibSection = (LPSTR) ::GlobalLock(hDIB);				
		int cxDIB = (int) pDoc->m_dib.GetWidth(lpDibSection);	// 获取DIB宽度				
		int cyDIB = (int) pDoc->m_dib.GetHeight(lpDibSection);	// 获取DIB高度
		::GlobalUnlock(hDIB);		
		CRect rcDIB;
		rcDIB.top = rcDIB.left = 0;
		rcDIB.right = cxDIB;
		rcDIB.bottom = cyDIB;		
		CRect rcDest= rcDIB;			
		pDoc->m_dib.DrawDib(pDC->m_hDC, &rcDest, pDoc->GetHObject(),// 重画DIB
			&rcDIB, pDoc->GetDocPal());
	}

}

/////////////////////////////////////////////////////////////////////////////
// CImagShowView printing

BOOL CImagShowView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

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

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

/////////////////////////////////////////////////////////////////////////////
// CImagShowView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CImagShowView message handlers