September 7, 2008 04:31am pdt

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	[x] Attachment Details

Need to access properties of a Frame in a document.

Zones: Internet and Delphi Programming, Hypertext Markup Language (HTML), Delphi Components

Tags: Microsoft, MSHTML_TLB, 1.2, Working on code to parse web pages. Trying to get at frames, Delphi, IE 7/7, n/a, IHTMLFrameBase is Interface. IHTMLFramesCollection2.Frames.Item(Index) returns OleVariant

I am working with M SHTML_TLB trying to access the properties of a frame using IHTMLFramesCollection2.Frames.Item(Index) which returns an OleVariant. I beleive that the properties of the frame are defined by the IHTMLFrameBase or DispHTMLIFrame objects. How can I map the OleVariant returned to an object implementing the correct interface.

Using code like CurrFrame := Frames.Item(Index) as IHTMLFrameBase does not compile.

         
           
           
             Code fragment brought together from various methods to illustrate problem.
var
WebBrowser: TWebBrowser;
Frames:     IHTMLFramesCollection2;
CurrFrame:  IHTMLFrameBase;
 
CurrDoc := WebBrowser.Document as IHTMLDocument2;
Frames := CurrDoc.frames as IHTMLFramesCollection2;
for i := 1 to Frames.length -1 do
begin
   // The line below is the problem
   CurrFrame := Frames.Item(Index) as IHTMLFrameBase;
   //Similar code with IHTMLElementCollectios is of course OK
   //Want to do stuff like
 
end;

           
         

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7.8

Question Stats

Zone: Programming

Question Asked By: GHG-RCH

Solution Provided By: EddieShipman

Participating Experts: 1

Solution Grade: A

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