BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Getting image from web site          BorlandTalk.com Forum Index -> C++ Builder (Internet Web) View previous topic :: View next topic   Author Message Grumps Guest Posted: Fri Mar 16, 2007 8:10 am    Post subject: Getting image from web site Hi All I'm not really a C++ programmer, but I have dabbled with C++Builder 5 a bit. I'm trying to grab an image from a web site. I can open a browser using CppWebBrowser1->Navigate(URL); and this is fine. Firstly, how do I know when the page has completed, and second, how do you get the images from this page? Sorry if this has been asked a thousand times, but my C++ knowledge is somewhat lacking. Back to top Graeme Guest Posted: Fri Mar 16, 2007 2:35 pm    Post subject: Re: Getting image from web site Grumps wrote: Quote: Hi All I'm not really a C++ programmer, but I have dabbled with C++Builder 5 a bit. I'm trying to grab an image from a web site. I can open a browser using CppWebBrowser1->Navigate(URL); and this is fine. Firstly, how do I know when the page has completed, and second, how do you get the images from this page? Sorry if this has been asked a thousand times, but my C++ knowledge is somewhat lacking. Ok. Got the page completed issue sorted using the OnDocumentComplete event. Just need to get the images from the page. Back to top Hans Galema Guest Posted: Fri Mar 16, 2007 3:45 pm    Post subject: Re: Getting image from web site Graeme wrote: Quote: Just need to get the images from the page. T(Cpp)WebBrowsr has a method to give you all the img's on that page. From thereon you can get the url in the src="url". Code below shows the amount of images and after that displays the src url's. Only it does not. It does display the url for the first image only. Maybe you can get it to work properly. At the moment I have no time for it. If you get it to work pleas post the code. Hans. void __fastcall TForm1::SpeedButton22Click(TObject *Sender) { AnsiString AllImages; IHTMLDocument2 *HTMLDoc = NULL; if(SUCCEEDED(CppWebBrowser1->Document->QueryInterface(IID_IHTMLDocument2, (LPVOID*)&HTMLDoc))) { IHTMLElementCollection *pAll = NULL; if(SUCCEEDED(HTMLDoc->get_images(&pAll))) // mshtml.h { long collSize; pAll->get_length(&collSize); IDispatch* id; VARIANT one; for( int idx = 0; idx < collSize; idx++) { one.vt = VT_UINT; one.lVal = idx; VARIANT two = {0}; pAll->item(one,two,&id); IHTMLElement* pElem = NULL; id->QueryInterface( IID_IHTMLElement, (LPVOID*)&pElem ); BSTR bstr = NULL; pElem->toString(&bstr); AllImages += bstr; AllImages += "\n"; } ShowMessage ( "AllObjects for Images\n\n" + AllImages ); // shows you amount long count = -1; long length = 0; pAll->get_length( &length); // ShowMessage ( "length: " + AnsiString ( length ) ); TVariant name = NULL; TVariant index = count; IDispatch *pDisp = NULL; while ( ++ count < 5) // 5!! { OleVariant varIndex((int)count); // index = count; pDisp = NULL; if(SUCCEEDED(pAll->item(name, varIndex, &pDisp))) // if(SUCCEEDED(pAll->item(name, index, &pDisp))) //if(SUCCEEDED(pAll->item("",count, &pDisp))) { // ShowMessage ( "SUCCEEDED(pAll->item(name, index, &pDisp))) " + IntToStr ( (int)pDisp) ); if ( pDisp ) { IHTMLImgElement *ImgElement = NULL; // mshtml.h pDisp->QueryInterface(IID_IHTMLImgElement, (LPVOID*)&ImgElement); pDisp->Release(); if(ImgElement) { WideString src; ImgElement->get_src ( &src ); ShowMessage ( src) ; SysFreeString (src); ImgElement->Release(); } } } else break; } pAll->Release(); } HTMLDoc->Release(); } } Back to top Grumps Guest Posted: Fri Mar 16, 2007 3:56 pm    Post subject: Re: Getting image from web site Hans Galema wrote: Quote: Graeme wrote: Just need to get the images from the page. T(Cpp)WebBrowsr has a method to give you all the img's on that page. From thereon you can get the url in the src="url". Code below shows the amount of images and after that displays the src url's. Only it does not. It does display the url for the first image only. Maybe you can get it to work properly. At the moment I have no time for it. If you get it to work pleas post the code. Hans. void __fastcall TForm1::SpeedButton22Click(TObject *Sender) { AnsiString AllImages; IHTMLDocument2 *HTMLDoc = NULL; I've fallen at the first hurdle! Where do I get IHTMLDocument2 from? Is it part of C++Builder5? Back to top Hans Galema Guest Posted: Fri Mar 16, 2007 4:42 pm    Post subject: Re: Getting image from web site Grumps wrote: Quote: I've fallen at the first hurdle! Where do I get IHTMLDocument2 from? Is it part of C++Builder5? The comment should have given you the clue: if(SUCCEEDED(HTMLDoc->get_images(&pAll))) // mshtml.h Hans. Back to top Grumps Guest Posted: Fri Mar 16, 2007 4:47 pm    Post subject: Re: Getting image from web site Hans Galema wrote: Quote: Grumps wrote: I've fallen at the first hurdle! Where do I get IHTMLDocument2 from? Is it part of C++Builder5? The comment should have given you the clue: if(SUCCEEDED(HTMLDoc->get_images(&pAll))) // mshtml.h Oops! It does now. Thanks. Back to top Grumps Guest Posted: Sun Mar 18, 2007 1:23 pm    Post subject: Re: Getting image from web site "Hans Galema" <notused (AT) notused (DOT) nl> wrote in message news:45fa760d$1 (AT) newsgroups (DOT) borland.com... Quote: Graeme wrote: Just need to get the images from the page. T(Cpp)WebBrowsr has a method to give you all the img's on that page. From thereon you can get the url in the src="url". Code below shows the amount of images and after that displays the src url's. Only it does not. It does display the url for the first image only. Maybe you can get it to work properly. At the moment I have no time for it. If you get it to work pleas post the code. I've looked at the code, but have absolutely no idea why it doesn't work. I've since found another code snippet that gets an image. In fact, there is only one image on the page I'm looking at, which makes it easy. 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