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 Saving an Image with layers Problem		  New Topic  Reply to Topic
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nwscomps

190 Posts
Posted - Sep 18 2018 :  12:20:14  Show Profile  Reply
My Code:

procedure TForm1.Save1Click(Sender: TObject);
var
stream: TMemoryStream;
bLoad:boolean;
begin
SaveImageEnDialog1.AttachedImageEnIO := fCurrentIEView.IO;

stream := TMemoryStream.Create;
try
fCurrentIEView.io.SaveToStreamIEN(stream);
fCurrentIEView.LayersMergeAll(true);
if SaveImageEnDialog1.Execute then
begin
fCurrentIEView.IO.SaveToFile(SaveImageEnDialog1.FileName);
bLoad := fCurrentIEView.IO.LoadFromStreamIEN(stream);
showmessage(BoolToStr(bLoad));
end;

finally
stream.Free;
end;
end;

I am trying to save the merged version of the imageen layers by first preserving all layers into a ien stream, then saving the merged version and finally restoring all the layers from the temporary stream. But the LoadFromStreamIEN method fails and so the layers are lost in the process.
I am using the latest version.

Francesco Savastano
Nwscomps.com
Add-ons for the ImageEn Library

w2m

USA
1990 Posts
Posted - Sep 18 2018 :  12:25:48  Show Profile  Reply
You have to set the position of the stream to 0 before loading it

stream := TMemoryStream.Create;
try
fCurrentIEView.io.SaveToStreamIEN(stream);
fCurrentIEView.LayersMergeAll(true);
if SaveImageEnDialog1.Execute then
begin
stream.Position := 0;
fCurrentIEView.IO.SaveToFile(SaveImageEnDialog1.FileName);
bLoad := fCurrentIEView.IO.LoadFromStreamIEN(stream);
showmessage(BoolToStr(bLoad));
end;
...

Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development
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nwscomps

190 Posts
Posted - Sep 18 2018 :  12:32:56  Show Profile  Reply
I found the problem was the missing:
stream.seek(0,0);
to reset the position of the stream.

Francesco Savastano
Nwscomps.com
Add-ons for the ImageEn Library
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