www.gusucode.com > VC++ 15种数据类型互换示例-源码程序 > VC++ 15种数据类型互换示例-源码程序/code/如何将COLORREF类型转换成RGB分量/Demo/DemoView.cpp

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// DemoView.cpp : implementation of the CDemoView class
//

#include "stdafx.h"
#include "Demo.h"

#include "DemoDoc.h"
#include "DemoView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDemoView

IMPLEMENT_DYNCREATE(CDemoView, CView)

BEGIN_MESSAGE_MAP(CDemoView, CView)
	//{{AFX_MSG_MAP(CDemoView)
		// 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()

/////////////////////////////////////////////////////////////////////////////
// CDemoView construction/destruction

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

}

CDemoView::~CDemoView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CDemoView drawing

void CDemoView::OnDraw(CDC* pDC)
{
	COLORREF cr = RGB(255, 128, 0);

	//R分量
	BYTE RED = GetRValue(cr);
	//G分量
	BYTE GREEN = GetGValue(cr);
	//B分量
	BYTE BLUE = GetBValue(cr);

	CString strText = _T("");
	strText.Format(_T("COLORREF值：0x%08X"), cr);
	pDC->TextOut(100, 50, strText);
	strText.Format(_T("R分量：0x%02X"), RED);
	pDC->TextOut(100, 100, strText);
	strText.Format(_T("G分量：0x%02X"), GREEN);
	pDC->TextOut(100, 150, strText);
	strText.Format(_T("B分量：0x%02X"), BLUE);
	pDC->TextOut(100, 200, strText);
}

/////////////////////////////////////////////////////////////////////////////
// CDemoView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDemoView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CDemoView message handlers