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 Process multiple selections?		  New Topic  Reply to Topic
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PeterPanino

864 Posts
Posted - Dec 03 2022 :  12:55:46  Show Profile  Reply
I need to process multiple selections, for example:



I need to copy the selections to a TImageEnMView, so from this example, I would get four images in the ImageEnMView. I have found no method in the documentation for how to do this.

PeterPanino

864 Posts
Posted - Dec 04 2022 :  05:56:44  Show Profile  Reply
It seems it is not possible to iterate through multiple selections. So now instead I do it after every single selection:

procedure TForm1.AddCurrentSelectionToImageCollection;
begin
  var BM :=  TIEBitmap.Create;
  try
    ImageEnView1.CopySelectionToBitmap(BM);
    ImageEnMViewImageCollection.InsertImage(0, BM);
  finally
    BM.Free;
  end;
end;
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xequte

38222 Posts
Posted - Dec 04 2022 :  18:21:10  Show Profile  Reply
Hi Peter

Yes, that is correct, multiple selections are treated as one selection mask.

Nigel
Xequte Software
www.imageen.com
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PeterPanino

864 Posts
Posted - Dec 05 2022 :  06:27:58  Show Profile  Reply
Hi Nigel

However, it would be nice if you could implement a method to iterate between multiple selections.

This could be done in the following way: Each time the user creates a selection, it is added to an internal array arraySelections. Also, "negative selections" (i.e., those selections created with the CTRL key pressed) are added to this array and calculated for intersections with the other selections. Then, this array should make it easy to iterate between the multiple selections.
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xequte

38222 Posts
Posted - Dec 05 2022 :  14:07:09  Show Profile  Reply
Thanks at the suggestion, Peter, We'll look at this for a future version.

Nigel
Xequte Software
www.imageen.com
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