Obtain the HTML source code in the WebBrowser control.

 

 

This section describes how to use the program method to obtainThe source code of HTML in the WebBrowser control, and the page content can be modified by modifying the source code content (Note: it is not to display a new page ).

 

First, add the WebBrowser control. There are two methods to obtain source code:

 

I. Methods1 (strictly speaking, this method is just to call WebBrowser's menu command "view source files", which is not what we want)

Key code:

 

# Include "mshtmcid. h"

Void CHtmlView: OnMethod1 ()

{

CWnd * pWnd = NULL;

 

CWnd * pWndShell = m_browser.GetWindow (GW_CHILD); // get the webbrowser window pointer

 

If (pWndShell)

{

PWnd = pWndShell-> GetWindow (GW_CHILD );// Get the child window pointer

}

If (pWnd! = NULL)

{

WPARAM wParam = MAKEWPARAM (IDM_VIEWSOURCE, 1 );// Convert to unsigned 32 bit value and pass it to wparam

PWnd-> SendMessage (WM_COMMAND, wParam, (LPARAM) this-> m_hWnd); // cool send a message to retreive the source.

}

}

 

Ii. Method2

 

The principle is to get the IPersistStreamInit interface pointer and then write the webpage to the IStream stream.

Key code:

 

# Include "mshtml. h"

// Fill in the source code of the web page in HtmlView in SourceView

Void CMainFrame: OnMethod2 ()

{

IHTMLDocument2 * pHTMLDocument = NULL;

IPersistStreamInit * pPSI = NULL;

 

IStream * pStream = NULL;

HGLOBALHHTMLText;

 

If(! (PHTMLDocument = (IHTMLDocument2 *) m_pHtmlView-> m_browser.GetDocument ()))

Return;

If(FAILED (pHTMLDocument-> QueryInterf