Is there any way to draw Webbrowser content to a specific DC?

Question

These days, I tries to create a hiden WebBrowser control in my program, and Using the IViewObject interface draw to my custom DC.

The result is fine, I got All the content I want, but the Draw speed is unacceptable, especially some complex web pages which contains Flash objects, Each Draw to DC cost more than 100 ms. So the flash object I drew is not smooth.

Is there a fast way to draw the control to my a specific DC?

my code sinpet is like this:

//hCompDc is a CompatibleDC which select a CompatibleBitmap.
RECTL imageRect = {0, 0, nWidth, nHeight};
pHtmlDocument2->QueryInterface(IID_IViewObject, (void **)&pViewObject);
pViewObject->Draw(DVASPECT_CONTENT, -1, NULL, NULL, NULL, hCompDc, NULL, &imageRect, NULL, 0);

Thank you for reading this question.

Waiting for your answers~

@Daniel I'm trying to get the WebBrowser's content smoothly, and draw it to some else where, like DirectX surface, or MemDC. And better if I can hide the original Browser UI — Gohan, Dec 23 '09 at 02:26

score 1 · Accepted Answer · answered Dec 23 '09 at 02:21

1

There is no other way to do this. None of the components you're using--IE, Flash, etc--were designed to be used this way. If draw time is an issue, you have to do it on a separate thread and synchronize.

answered Dec 23 '09 at 02:21

i_am_jorf

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I thought using mutithread can helps the UI look smooth, but the Browser content is still not smooth? Did I think wrong? – Gohan Dec 23 '09 at 02:31
I'm not sure I understand your question. – i_am_jorf Dec 23 '09 at 04:59
I try to create a thread call the OleDraw Function, but I don't know how to do the synchronize with the COM interface. the call in "OleDraw" will always raise an exception. I can only use the WM_PRINT to do it in separate thread:(. – Gohan Dec 24 '09 at 15:51
Sure it is:), but COM Multi-threaded I think is even more harder, which I lost my way~ – Gohan Dec 31 '09 at 07:32

score 0 · Answer 2 · edited Feb 01 '12 at 03:12

0

Try this: http://sourceforge.net/projects/wke/

char* buffer = new char[800*600*4];
IWebVeiw* webView = wkeCreateWebView("");    
webView->resize(800, 600);
webView->loadURL("www.google.com");
webView->paint(buffer, 0);
wkeDestroyWebView(webView);

edited Feb 01 '12 at 03:12

Cody Gray - on strike

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answered Dec 01 '11 at 06:48

blzfans

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Is there any way to draw Webbrowser content to a specific DC?

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