Re: How to draw on "Microsoft Web Browser" control?

Thank you for your reply.

I am doing semantic analysis on the HTML DOM tree, so I am not sure
whether it is a good idea for me to insert elements into the tree.
Draw on existing elements doesn't change the structure of the html
tree, but it changes the content, doesn't it? I don't really understand
what you mean by "drawing on existing elements". Change its style using
IHTMLStyle?

I will try using CHtmlView or CHtmlCtrl in your link first and see the
result.

Thanks again :)

Ajay Kalra wrote:
CWebBrowser2 is not the subclass you want. Take a look here about the
correct window to subclass:

http://msdn.microsoft.com/msdnmag/issues/01/09/c/default.aspx

Having said that, I am not sure if subclassing and drawing on it is the
correct way. I would go with inserting an element or draw on existing
element.

---
Ajay

ZhiguoYoung@xxxxxxxxx wrote:
I have a "Microsoft Web Browser" in my program.
VC generated CWebBrowser2 as a wrapper class of ActiveX control
"Microsoft Web Broswer", which is a subclass of CWnd.
Now I get the position and size of a certain html element, say, an
image, and I want to draw a red rectangle to encompass it.
I tried to do that by the following code but it doesn't work.


RECT rect = {100, 100, 100, 100};
CDC * pdc = this->m_webBrowser.GetDC();

CPen newPen;
newPen.CreatePen(PS_SOLID, 3, RGB(25, 255, 25));
pdc->SelectObject(&newPen);
pdc->Rectangle(&rect);

CBrush newBrush;
newBrush.CreateStockObject(HOLLOW_BRUSH);
pdc->FillRect(&rect, &newBrush);
ValidateRect(&rect);

this->m_webBrowser.ReleaseDC(pdc);

Does anyone know how I can do it?
Any help will be appreciated!

P.S.
I know I can make the image element maked by changing its style using
MSHTML, but there are situations that are far more complicated to
handle.

.

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