Hi Team,
I'm trying to build a web application which is capable of scanning the HTML
of a loaded web page for specific tags, embedded instructions, and XML data
islands.
I started out with the Web Browser application sample that comes with
Delphi, and found that it works fine as a way of _displaying_ HTML but is a
bit lacking when it comes to accessing the document contents.
A quick look at the TWebBrowser help topic reveals:
property Document: IDispatch;
and further investigation reveals the structure of IDispatch:
{$EXTERNALSYM IDispatch }
IDispatch = class(IUnknown)
public
function GetTypeInfoCount(var ctinfo: Integer): HResult; virtual;
stdcall; abstract;
function GetTypeInfo(itinfo: Integer; lcid: TLCID; var tinfo:
ITypeInfo): HResult; virtual; stdcall; abstract;
function GetIDsOfNames(const iid: TIID; rgszNames: POleStrList;
cNames: Integer; lcid: TLCID; rgdispid: PDispIDList): HResult;
virtual; stdcall; abstract;
function Invoke(dispIDMember: TDispID; const iid: TIID; lcid: TLCID;
flags: Word; var dispParams: TDispParams; varResult: PVariant;
excepInfo: PExcepInfo; argErr: PInteger): HResult; virtual; stdcall;
abstract;
end;
but there are no examples of how you use this interface to get at the
document contents.
The W3C DOM allows access to the document contents with a few lines of
javascript:
var docContents := document.getElementsByTagName("*");
and docContents[0] then returns the first tag in the HTML file.
Can anyone help ?
Regards,
Simon Mahony,
System Creator,
MetService.
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