Double Buffered Graphics using DirectDraw

// mfcdxView.cpp : implementation of the CMfcdxView class
//

#include "stdafx.h"
#include "mfcdx.h"

#include "mfcdxDoc.h"

#include "..\DXSurfaceMgr.h"
#include "mfcdxView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView

IMPLEMENT_DYNCREATE(CMfcdxView, CView)

BEGIN_MESSAGE_MAP(CMfcdxView, CView)
	//{{AFX_MSG_MAP(CMfcdxView)
	ON_WM_CREATE()
	ON_WM_ERASEBKGND()
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView construction/destruction

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

}

CMfcdxView::~CMfcdxView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView drawing

void CMfcdxView::OnDraw(CDC* pDC)
{
	CMfcdxDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here

	HDC& hdc = dxMgr_.BeginPaint(GetSysColor(COLOR_3DFACE));
	if(NULL !=hdc)
	{
		::SetBkMode(hdc,TRANSPARENT);

		CRect client; GetClientRect(&client);

		filllines(hdc, client, RGB(128, 128, 128));

		CDC* cdc = CDC::FromHandle(hdc);

		CPen p(PS_DASHDOTDOT, 1, RGB(128, 128, 128));
		CPen* op = cdc->SelectObject(&p);
		
		cdc->MoveTo(30, 87);
		cdc->LineTo(client.Width()-20, client.Height() - 30);

		cdc->SetBkMode(TRANSPARENT);
		cdc->TextOut(20, 20, "double buffering in directx", 27);
		cdc->SelectObject(op);

		dxMgr_.EndPaint();
	}
}

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CMfcdxView message handlers

int CMfcdxView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	if(!dxMgr_.Initialise(m_hWnd)) return -1;
	
	return 0;
}

BOOL CMfcdxView::OnEraseBkgnd(CDC* pDC) 
{
	return -1;
}