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
	using namespace Gdiplus;
	Graphics myGraphics(pDC->m_hDC);
	if(pDoc->str_File!="")
	{
		USES_CONVERSION;
		Bitmap bitmap(A2W((LPCTSTR)pDoc->str_File));
		Pen pen(Color(255, 0, 0, 0), 50);
		ColorMatrix colorMatrix = {	1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
			0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
			0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
			0.0f, 0.0f, 0.0f, 0.6f, 0.0f,
			0.0f, 0.0f, 0.0f, 0.0f, 1.0f};
		ImageAttributes imageAtt;
		imageAtt.SetColorMatrix(&colorMatrix, ColorMatrixFlagsDefault,
			ColorAdjustTypeBitmap);
		myGraphics.DrawLine(&pen, Point(10, 30), Point(150, 30));
		INT iWidth = bitmap.GetWidth();
		INT iHeight = bitmap.GetHeight();
		myGraphics.DrawImage(	&bitmap, Rect(30, 0, iWidth, iHeight),
			0,0,iWidth,iHeight,UnitPixel,&imageAtt);
	}
	myGraphics.ReleaseHDC(pDC->m_hDC); 
}

/////////////////////////////////////////////////////////////////////////////
// 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