C / C++ / MFC

Graphics CmyDialog::GetGraphicsObj()
{

	CClientDC dc(&m_pictureControl);
	Graphics graphicObj(dc);

	CRect rc = GetImageArea(&m_pictureControl);
	
	CPoint topLeft;
	topLeft = rc.TopLeft();
	int rcWidth = rc.Width();
	int rcHeight = rc.Height();
	
	Rect gdiRect(topLeft.x, topLeft.y, rcWidth, rcHeight);

	graphicObj.SetClip(gdiRect, CombineModeUnion);

	return graphicObj;
}

CClientDC dc(&m_pictureControl);	<br />
Graphics graphics(dc);<br />
CRect rc = GetImageArea(&m_pictureControl);<br />
re.DeflateRect(2,2);<br />
Rect gdiRect(topLeft.x, topLeft.y, rcWidth, rcHeight);	graphicObj.SetClip(gdiRect, CombineModeUnion);<br />
do your drawings here.

TheShihan wrote:

error C2248: "Gdiplus::Graphics::Graphics": Kein Zugriff auf private Member, dessen Deklaration in der Gdiplus::Graphics-Klasse erfolgte.
( no access to private memember, see declaration in the Graphics-Class)

/**************************************************************************************/
void xy::DrawPicture()
/**************************************************************************************/
{
	///////////////////////////////////////////////
	// show image in picture control IDC_PICTURE
	CClientDC dc(&m_pictureControl);
	Graphics graphics(dc);

	CRect rc = GetImageArea(&m_pictureControl);

	CPoint topLeft;
	topLeft = rc.TopLeft();
	int rcWidth = rc.Width();
	int rcHeight = rc.Height();
	
	Rect gdiRect(topLeft.x, topLeft.y, rcWidth, rcHeight);

	graphics.SetClip(gdiRect, CombineModeUnion);

	// fix image panning
	m_nPanX = 0;
	m_nPanY = 0;
	
	// Coordinates of the top left corner (in drawing area)
	int x = 0,
		y = 0;

	int size_x = rc.Width();
	int size_y = rc.Height();
		
	// Display it
	graphics.DrawImage(m_image, x, y, size_x, size_y);

	// we need to enable the image manipulation controls
	enableImageManipulation(true);

}

/**************************************************************************************/
// Returns a CRect with deflated dimensions of a CWnd child element
CRect xy::GetImageArea(CWnd * windowElement)
/**************************************************************************************/
{
	CRect rc;

	windowElement->GetWindowRect(&rc);
	ScreenToClient(&rc);

	rc.DeflateRect(2, 2);

	return rc;
}