CppWebBrowser IViewObject->Draw only black and white?

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2 total messages Started by Timon Meyer Wed, 10 Nov 2004 11:33

#1491

Author: Timon Meyer
Date: Wed, 10 Nov 2004 11:33

44 lines
2205 bytes

Hello,

I used the IViewObject interface I got from CppWebBrowser and used the
IObjectView->Draw function to capture the content of CppWebBrowser into a
bitmap. Everything seems to work but the HTML content of the CppWebBrowser
is rendered only black and white!?!
Here is what I did:

... standard code here to get the pDoc of CppWebBrowser ...

IViewObject* pViewObject;
pDoc->QueryInterface(IID_IViewObject, (void**)&pViewObject);
if (pViewObject)
{
  HDC hDCMem = CreateCompatibleDC(NULL); // For destination bitmap
  HBITMAP hBmp = NULL;
  HDC hScreenDC = ::GetDC(CppWebBrowser1->Handle);
  hBmp = CreateCompatibleBitmap(hDCMem, rcSource.right - rcSource.left,
rcSource.bottom - rcSource.top);
  ::ReleaseDC(CppWebBrowser1->Handle, hScreenDC);

  HGDIOBJ hOld = SelectObject(hDCMem, hBmp);

  hr = pViewObject->Draw( DVASPECT_CONTENT, -1, NULL, NULL,
                                   hScreenDC, hDCMem, &rcSource,
                                   NULL, NULL, 0);

  pViewObject->Release();

  SelectObject(hDCMem, hOld);
  DeleteObject(hDCMem);

  OpenClipboard(Form1->Handle);

  EmptyClipboard();
  SetClipboardData(CF_BITMAP, hBmp);
  CloseClipboard();
}

After I execute the code I get only a black and white version of the HTML
content in the clipboard,
does anybody know why?

Thanks for any help!

Re: CppWebBrowser IViewObject->Draw only black and white?

#1505

Author: Timon Meyer
Date: Wed, 17 Nov 2004 18:11

4 lines
1142 bytes

I found out that IViewObject has problems with frames, so I decided to stop
the way using IViewObject

Thanks anyway!

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