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 All Metadata from a png image		  New Topic  Reply to Topic
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Dennis445a

Canada
17 Posts
Posted - Oct 16 2026 :  16:37:24  Show Profile  Reply
With the demo app as attached, under general I see additional metadata such as prompt and workflow. However in my app it doesn't show this additonal information. Is there something I am missing? I checked the docs and can't seem to find the solution.

I have added this code as a basic test.

MetaList.DoubleBuffered := True;
MetaList.ExifTags := [ efCommon, efWindows, efCamera, efExtra, efAdvanced ];
MetaList.AlwaysShowTypes  := [ iemGeneral ];
MetaList.AttachedImageEn := ImageView;


Thanks for any help.





dm

xequte

39560 Posts
Posted - Oct 16 2026 :  18:57:19  Show Profile  Reply
Hi Dennis,

The extra fields you see in the demo (e.g. "prompt" and "workflow") are PNG text chunks, which are available in TIOParams.PNG_Chunks.

In the new beta, TIEMetaListView no longer shows PNG chunks by default (because they can be very large, e.g. the workflow of AI-generated images), but you can enable them in the OnAddMetaData event:

procedure TMainForm.MetaListAddMetaData(Sender: TObject; MetaType: TIEMetaType;
  RecIndex, DataIndex: Integer; var Caption, Value: string; var Include: Boolean);
begin
  // Show PNG text chunks (e.g. "prompt" and "workflow")
  if ( MetaType = iemGeneral ) and ( DataIndex = General_Tag_PNGChunks ) then
    Include := True;
end;


The beta also fixes an issue where PNG chunks were not loaded if the PNG was loaded using WIC (e.g. 64-bit apps without the IELib DLL, or when WicFastLoading is enabled), which is likely why they did not appear in your app.

Please email me for the beta.

Nigel
Xequte Software
www.imageen.com
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Dennis445a

Canada
17 Posts
Posted - Oct 16 2026 :  19:28:47  Show Profile  Reply
Hey,

Thanks for this Nigel. Much appreciated.

dm
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