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Date Posted: 19:35:19 03/31/04 Wed
Author: Michel
Subject: Re: Part 2 of Assigning a List of TMetaFiles to a ImageScrollBox
In reply to: Ralph 's message, "Part 2 of Assigning a List of TMetaFiles to a ImageScrollBox" on 08:35:36 03/26/04 Fri

Hi Ralph,

The Frames support in TDibGraphic was designed to work with multi-page formats, so the functionality is not exposed for single image formats.

I see two approaches. First creating a temporary TIF or DCX file than loaded it with multi load.

Or, since you already have a list, create a temporary TDibGraphic everytime you want to change the image, ie

Graphic := TDibGraphic.Create;
ImageScrollBox.Graphic := Graphic;

Best regards,


>I thought I made it, but...
>I still want to assign a list of MetaFiles to an
>ImageScrollBox. It works now with single frames - but
>how can I do that with multiple pages?
>At the moment I go through the TList of TMetaFiles and
>draw each MetaFile on the canvas of a temporarily
>created TTiffGraphic.
>But with more than one page TTiffGraphic.FrameCount is
>And if I try it without the TTiffGraphic I do a
>ImageScrollBox.Graphic.NewImage for every MetaFile in
>the list - and still can access only a single frame:
>ImageScrollBox.FrameCount is 0, no matter what I do.
>"The FrameCount returns the number of frames (sub
>images) when a file has been loaded with multiple
>images by the LoadFromFile or LoadFromStream method."
>I know!
>But what if I want to assign mutiple images without
>writing and loading in and from a stream? I could use
>a temp file, but to be honest: I don't want to <g>.
>TIA for any help!!

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