?
Solved

Changing a frame size with IHTMLFrameSetElement

Posted on 2001-09-07
2
Medium Priority
?
287 Views
Last Modified: 2013-11-20
I'm working with a CWebBrowser2 object and am currently using interface pointers to manipulate and create items on a web page.  I need to change the size of a frame in a frameset and the IHTMLFrameSetElement seems capable to doing this, but I can't figure out a way to get an interface pointer to an IHTMLFrameSetElement.

Any help would be much appreciated. Thanks.
0
Comment
Question by:Taz
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 49

Accepted Solution

by:
DanRollins earned 600 total points
ID: 6472872
Working with these COM interfaces in C++ is the most frustrating task on earth.  The Driller Sample:
  http://msdn.microsoft.com/downloads/samples/internet/default.asp?url=/Downloads/samples/Internet/browser/driller/Default.asp

shows the techniques.

In the code below, I change the FRAMESET COLS= setting of the currently-loaded page from "25%,50%,25%" to "25%,25%.50%"  Lookup IHTMLFrameSetElement in MDSN for other things you can do with a frameset.


#include <Mshtml.h>
//-----------------------------
// find the first of a specified element type
//
IDispatch* FindElement( REFIID riid, IDispatch* pDispBrowser )
{
    HRESULT hr;
     IHTMLDocument2* pHTMLDocument2;

     hr= pDispBrowser->QueryInterface( IID_IHTMLDocument2, (void**)&pHTMLDocument2 );
    if (hr != S_OK) return 0;

     IHTMLElementCollection* pColl;
     hr= pHTMLDocument2->get_all( &pColl );
    if (hr != S_OK) return 0;

     LONG celem;
     hr = pColl->get_length( &celem );
    if (hr != S_OK) return 0;

    for ( int i=0; i< celem; i++ ) {
          COleVariant varIndex( (long)i );
          COleVariant var2;
          IDispatch* pDisp;

          hr = pColl->item( varIndex, var2, &pDisp );
        if ( hr != S_OK ) {
            return 0;
        }
          IHTMLElement* pElem;
        //---------- see if this one is of the requested type...
          hr = pDisp->QueryInterface( riid, (void **)&pElem );
        if ( hr == S_OK ) {   // YES!
            pDisp->Release();
             return( pElem );
        }
        pDisp->Release();
    }
    return(0);
}

void CD10WebDlg::OnButton1()
{
    CWebBrowser2* pBrowser= (CWebBrowser2*)GetDlgItem( IDC_EXPLORER1 );

     IHTMLFrameSetElement* pFrameSetElem= (IHTMLFrameSetElement*)FindElement(
        IID_IHTMLFrameSetElement, pBrowser->GetDocument()
    );
    if ( pFrameSetElem == NULL ) {
        return; // no FRAMESET elements in the document
    }
    BSTR bstr;
    pFrameSetElem->get_cols( &bstr );
    CString s= bstr; //------------- so you can eyball the current value

    bstr= L"25%,25%,50%";
    pFrameSetElem->put_cols( bstr );  // set it to a new value
    pFrameSetElem->Release();
}


-- Dan
0
 

Author Comment

by:Taz
ID: 6476882
Thanks!  This is exactly what I needed.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Here is how to use MFC's automatic Radio Button handling in your dialog boxes and forms.  Beginner programmers usually start with a OnClick handler for each radio button and that's just not the right way to go.  MFC has a very cool system for handli…
Introduction: Dialogs (1) modal - maintaining the database. Continuing from the ninth article about sudoku.   You might have heard of modal and modeless dialogs.  Here with this Sudoku application will we use one of each type: a modal dialog …
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…
Suggested Courses

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question