bool simpleBitmap::acquire( const string& wind_name, RECT rect )
{
	cleanup_resources();

	HWND hWnd = ::FindWindow(NULL,wind_name.c_str());
	if (!hWnd)
		return false;

	// If the target rect is 0,0,0,0 take the whole window.
	POINT start = {rect.left,rect.top};
	if ( (rect.left == 0 && rect.right == 0) || (rect.top == 0 && rect.bottom == 0) )
	{	
		RECT wndRect;
		::GetWindowRect(hWnd,&wndRect);
		rect = wndRect;
	}

	int w = rect.right-rect.left;
	int h = rect.bottom-rect.top;

	HDC hDc = ::GetWindowDC(hWnd);
	hMemDc = CreateCompatibleDC(hDc);
	hBmp = CreateCompatibleBitmap(hDc,w,h);

	if ( !hDc || !hMemDc || !hBmp )
		return false;
	
	::SelectObject(hMemDc,hBmp);

	::BitBlt(hMemDc,0,0,w,h,hDc,start.x,start.y,SRCCOPY);

	::ReleaseDC(hWnd, hDc);

	bmpRect = rect;

	return true;
}

void CBitmapWnd::OnPaint()
{
	CPaintDC dc(this); // device context for painting
	
	// Check if the simple bitmap is initialized.
	if ( sBmp )
	{
		// Get HDC and make sure the bitmap is selected into it.
		HBITMAP hBmp = sBmp->get_hbitmap();
		HDC hDC = sBmp->getSafeDC();
		::SelectObject(hDC,hBmp);

		// The rectangle describing the bitmap.
		CRect bmpRect;
		bmpRect = sBmp->get_rect();

		// Convert to MFC CDC
		CDC CMemDC;
		CMemDC.FromHandle(hDC);
		CRect wndRect;
		this->GetClientRect(&wndRect);	

		//Draw
		dc.StretchBlt(0,0,wndRect.Width(),wndRect.Height(),&CMemDC,0,0,bmpRect.Width()-1,bmpRect.Height()-1,SRCCOPY);

		/*		
		// This call works, and draws the background white.
		CBrush b(RGB(255,255,255));
		dc.SelectObject(&b);
		dc.Rectangle(wndRect);
		*/
	}
}

// Replace:
CMemDC.FromHandle(hDC);
// With:
CMemDC.Attach(hDC);

 CWnd *pWnd=NULL;

if (pWnd = CWnd::FindWindow(wind_name.c_str(),NULL))
{
	CRect Area(&Rect);//init 
	if(!Area.Width() || !Area.Height())//validate
		pWnd->GetWindowRect(Area);

	//get the DC
	CDC *pDC=NULL;
	pDC = pWnd->GetWindowDC();

	//free members if required
	//TODO add free GDI resource code

	//fill members
	m_DC.CreateCompatibleDC(pDC);// CDC (is public in this example)
	m_Bmp.CreateCompatibleBitmap(pDC, Area.Width(),Area.Height()); // CBitmap

	//save original CBitmap to return our CDC to the default state before DeleteDC() 
	m_OrBmp=m_DC.SelectObject(&m_Bmp); // CBitmap *

	//copy
	m_DC.BitBlt(Area.left, Area.top, Area.Width(),Area.Height(),pDC,0,0, SRCCOPY );

	//clean up
	pWnd->ReleaseDC(pDC);
}

void CBitmapWnd::OnPaint()
{
	CPaintDC dc(this); // device context for painting
	
	// Check if the simple bitmap is initialized.
	if ( sBmp )
	{
		//get areas
		CRect Area;
		GetClientRect(Area,0);
		CRect bmpRect;
		bmpRect = sBmp->get_rect();
		//Draw	
		dc.StretchBlt(0, 0, Area.Width(),Area.Height(),&sBmp.m_DC,0,0,bmpRect.Width()-1,bmpRect.Height()-1,SRCCOPY);
	}
}