🚀 go-pugleaf

"Saulo I. Regis" <saulo@password.info> wrote in message
news:418954e8@newsgroups.borland.com...

> when I execute this code with the TCppWebBrowser component
> fully loaded with the desired content I'm receiving just the "root"
> html code of the homepage that defines the FRAMESET structure
> of the page!

That is because you are querying the HTML from the wrong Document object.
You are not taking frames into account at all.  IHTMLDocument2 has a frames
collection in it.  You are supposed to use that collection to get the
IHTMLWindow2 interface for the desired frame, and then you can get the
frame's IHTMLDocument2 interface from that.  Then you can get the HTML that
you are interested in from that.


Gambit

> That is because you are querying the HTML from the wrong Document object.
> You are not taking frames into account at all.  IHTMLDocument2 has a
frames
> collection in it.  You are supposed to use that collection to get the
> IHTMLWindow2 interface for the desired frame, and then you can get the
> frame's IHTMLDocument2 interface from that.  Then you can get the HTML
that
> you are interested in from that.

Hi Remy,

Could you give me a small sample code of how I access the frames collection,
scan it and retrieve the HTML code of each frame?

Saulo

"Saulo I. Regis" <saulo@password.info> wrote in message
news:418972c3$1@newsgroups.borland.com...

> Could you give me a small sample code of how I access
> the frames collection, scan it and retrieve the HTML code
> of each frame?

I take it that you did not read the documentation for IHTMLDocument2 yet,
did you?


http://msdn.microsoft.com/workshop/browser/mshtml/reference/ifaces/interface.asp


    #include <memory>
    #include <utilcls.h>

    void __fastcall GetFramesHTML()
    {
        if( !Browser1->Document ) return;

        TComInterface<IHTMLDocument2> Doc;
        Browser1->Document->QueryInterface(IID_HTMLDocument2,
(LPVOID*)&Doc);
        if( !Doc ) return;

        TComInterface<IHTMLFramesCollection2> Frames;
        Doc->get_frames(&Frames);
        if( !Frames ) return;

        long cnt = 0;
        Frames->get_length(&cnt);

        for(long l = 0; l < cnt; ++l)
        {
            TVariant idx = l;
            TVariant ret;

            Frames->item(&idx, &ret);
            if( (ret.vt != VT_DISPATCH) || (ret.pdispVal == NULL) )
continue;

            TComInterface<IHTMLWindow2> Window;
            ret.pdispVal->QueryInterface(IID_IHTMLWindow2,
(LPVOID*)&Window);
            if( !Window ) continue;

            TComInterface<IHTMLDocument2> Doc2;
            Window->get_document(&Doc2);
            if( !Doc2 ) continue;

            AnsiString HTML = GetHTML(Doc2);
            if( !HTML.IsEmpty() )
                // use HTML as needed...
        }
    }

    AnsiString __fastcall GetHTML(IHTMLDocument2* Doc)
    {
        if( Doc )
        {
            TComInterface<IPersistStreamInit> Psi;
            Doc->QueryInterface(IID_IPersistStreamInit, (LPVOID*)&Psi);
            if( Psi )
            {
                std::auto_ptr<TStringStream> StrStrm(new TStringStream(""));
                std::auto_ptr<TStreamAdapter> Adapter(new
TStreamAdapter(StrStrm.get(), soReference));

                if( SUCCEEDED(Psi->Save(*Adapter, FALSE)) )
                    return StrStrm->DataString;
            }
        }

        return "";
    }


Gambit

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> escreveu na mensagem
news:4189803d$1@newsgroups.borland.com...
>
> I take it that you did not read the documentation for IHTMLDocument2 yet,
> did you?

Yep! I mean... nope :)

I was digging the C++ Builder Help and things were very cryptic!

>
http://msdn.microsoft.com/workshop/browser/mshtml/reference/ifaces/interface
.asp

Wow man... "The Earth is Blue!" :)

Thank you a lot for pointing out these docs to me! This is powerfull stuff!

>     #include <memory>
>     #include <utilcls.h>

No words to express my gratitude to you on this code sample!

#include <AllTheBestToYou>

Saulo

Hi Remy,

Your code seems to work great!

All frames are being retrieved BUT it fails to retrieve the current HTML
code of the "main" frame!

May be it has to do with its content and how to deal with it?

The "main" frame content starts with a link to a CSS file (see bellow)

***************************************
<title>estatisticas</title>

<link rel="stylesheet" href="index/styles.css" type="text/css">

<STYLE type=text/css>BODY {

 CROLLBAR-ARROW-COLOR: #FFFFFF; SCROLLBAR-TRACK-COLOR: #9999cc;

 SCROLLBAR-BASE-COLOR: #666699; scrollbar-dark-shadow-color: #765C47

}

</STYLE>

****************************************

Just after that a TABLE is defined and two FLASH MOVIES are inserted on the
first row with the html code bellow

******************************

            <div align="center"><object
classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.ca
b#version=5,0,0,0" width="236" height="62" align="middle">
                <param name=movie value="../imagens/banners/anuncie.swf">
                <param name=quality value=high>
                <embed src="../imagens/banners/anuncie.swf" quality=high
pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_
Version=ShockwaveFlash" type="application/x-shockwave-flash" width="236"
height="62" align="middle">
                </embed>
              </object>
*******************************

and after that the content goes "normal" as texts inside the Table's cols
and rows!

I wonder if the existence of FLASH MOVIES would affect the way I need to
retrieve this HTML code using the OLE interfaces.

As I cannot predict the kind of web sites (and theirs contents) that will be
navigated and retrieved, may be it'll be better to just retrieve the URLs of
each frame content and use INDY to GET it?

Saulo

"Saulo I. Regis" <saulo@password.info> wrote in message
news:418abe49@newsgroups.borland.com...

> All frames are being retrieved BUT it fails to retrieve
> the current HTML code of the "main" frame!

Please show your actual code for accessing that frame.

> May be it has to do with its content and how to deal with it?

The HTML content does not effect IPersistStreamInit's ability to save the
HTML.  It is treated as raw data, and saved as-is.

> I wonder if the existence of FLASH MOVIES would affect
> the way I need to retrieve this HTML code using the OLE interfaces.

No, it does not.

> As I cannot predict the kind of web sites (and theirs contents) that will
be
> navigated and retrieved, may be it'll be better to just retrieve the URLs
of
> each frame content and use INDY to GET it?

You could start by testing why the current code is failing to begin with.
All interface methods return an HRESULT that contain an error code if
something goes wrong.  Your first step should be to track down which
specific line is failing, and then checking to see which error code it is
returning.


Gambit

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> escreveu na mensagem
news:418afc51$1@newsgroups.borland.com...

> Please show your actual code for accessing that frame.

As here it's 2:30 a.m. and I had already turned off my dev computer I'll try
to give you a quick answer now and a more complete today!! morning.

The code is the same supplied by you in this thread. All frames are being
retrieved in the same loop with the same code.

One thing is that the "main" frame content has 127.79 kb! Is somewhat big
because is a Table with over 3,000 lines!

> > May be it has to do with its content and how to deal with it?
>
> The HTML content does not effect IPersistStreamInit's ability to save the
> HTML.  It is treated as raw data, and saved as-is.

I read a post of june/2004 where you say the IE has some kind of security
problems with CSS links but no specific directions were given in that
thread!

> You could start by testing why the current code is failing to begin with.
> All interface methods return an HRESULT that contain an error code if
> something goes wrong.  Your first step should be to track down which
> specific line is failing, and then checking to see which error code it is
> returning.

Yes. That is my preferred way because I don't want to retransmit content
that the IE already received and is already inside the data area of the
object!

The first thing I'll do after wakening up 8-) ... is to check the HRESULT
return codes and post the results here along with the actual code I'm using
to retrieve the frames!

Anyway I READ THE DOCS :)

and I was able to retrieve the URL of each frame so I'm confident that at
least the Indy way is at reach as a last resource!

I tried to use the toString( ) method of IHTMLDocument but it only retrieves
"[Object]" literal.

Have nice dreams everybody :)
Nite!

Saulo

"Saulo I. Regis" <saulo@password.info> wrote in message
news:418b0518@newsgroups.borland.com...

> I read a post of june/2004 where you say the IE has some
> kind of security problems with CSS links but no specific
> directions were given in that thread!

What I actually said in that discussion was not realted to CSS specificall.
IE has security issues when accessing content across multiple servers.  In
other words, if you load a frameset from one website, and one of the frames
loads content from a different website, then there are security issues with
that.  If everything is coming from the same website, though, then
everything should be fine.


Gambit