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12.31.2007 at 10:25AM PST, ID: 23051040
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Need to access properties of a Frame in a document.

Asked by GHG-RCH in 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.Start Free Trial 
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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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[+][-]01.15.2008 at 06:32AM PST, ID: 20662842

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[+][-]01.15.2008 at 06:32AM PST, ID: 20662847

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[+][-]01.15.2008 at 01:24PM PST, ID: 20666825

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[+][-]01.15.2008 at 02:26PM PST, ID: 20667364

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About this solution

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
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Solution Provided By: EddieShipman
Participating Experts: 1
Solution Grade: A
 
 
[+][-]01.16.2008 at 12:48PM PST, ID: 20675927

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[+][-]01.16.2008 at 12:52PM PST, ID: 20675976

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