showbmpview.cpp

不可多得的例程资源

// ShowBmpView.cpp : implementation of the CShowBmpView class
//

#include "stdafx.h"
#include "ShowBmp.h"

#include "ShowBmpDoc.h"
#include "ShowBmpView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CShowBmpView

IMPLEMENT_DYNCREATE(CShowBmpView, CView)

BEGIN_MESSAGE_MAP(CShowBmpView, CView)
	//{{AFX_MSG_MAP(CShowBmpView)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CShowBmpView construction/destruction

CShowBmpView::CShowBmpView()
{
	// TODO: add construction code here
	State=0;

}

CShowBmpView::~CShowBmpView()
{
}

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

	return CView::PreCreateWindow(cs);
}


/////////////////////////////////////////////////////////////////////////////
// CShowBmpView drawing

void CShowBmpView::OnDraw(CDC* pDC)
{
	CShowBmpDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	
	if(State==1)
	{
		CDC dcImage;
		if(!dcImage.CreateCompatibleDC(pDC))
			return;
		BITMAP bm;
		m_bitmap.GetBitmap(&bm);   //show the image
		dcImage.SelectObject(&m_bitmap);
		pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&dcImage,0,0,SRCCOPY);   //通过调用函数完成位图绘画
	}
}

/////////////////////////////////////////////////////////////////////////////
// CShowBmpView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CShowBmpView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CShowBmpView message handlers

void CShowBmpView::OnFileOpen() 
{
	char szFileFilter[]="BMP File(*.BMP)|*.BMP|";   //文件类型为*.BMP格式
	CFileDialog dlg(TRUE,NULL,NULL,OFN_HIDEREADONLY,szFileFilter);
	if(IDOK==dlg.DoModal())
	{
		Bmpname.Format("%s",dlg.GetPathName());
		Showpicture(Bmpname);  //将打开的文件名的路径传递给Showpicture()构造函数
	}
	
}

void CShowBmpView::Showpicture(CString Bmpname)
{
	if(State==0)
	{
		HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(Bmpname),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
		m_bitmap.Attach(hBitmap);
		State=1;
	}
	Invalidate();    //重绘窗口
}