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 ImageEn Library for Delphi, C++ and .Net
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 Hidden Layer(s)
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spetric

Croatia
243 Posts

Posted - May 03 2019 :  04:45:21  Show Profile  Reply
Is it possible to have layers that are not shown in TImageEnLayerMView?
Some kind of hidden (internal) layers.

TIA,
Siniša

yogiyang

India
522 Posts

Posted - May 04 2019 :  08:59:17  Show Profile  Reply
Check Nigel's reply to my similar query:
https://www.imageen.com/ieforum/topic.asp?TOPIC_ID=3782


Yogi Yang
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spetric

Croatia
243 Posts

Posted - May 04 2019 :  14:54:01  Show Profile  Reply
Thanks Yogi.

So, in order to hide some layers (not only mask) what would be the best approach:
to use tag or group them under same group ID?

Siniša
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xequte

4475 Posts

Posted - May 04 2019 :  20:26:36  Show Profile  Reply
Hi Sinisa

It would depend what rule determines whether a layers is to be hidden or not.

If it is too slow to check in the event, then just use the tag property:

https://www.imageen.com/help/ImageEn/TIELayer.Tag.html


Nigel
Xequte Software
www.imageen.com
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spetric

Croatia
243 Posts

Posted - May 06 2019 :  16:23:03  Show Profile  Reply
Hi Nigel,

Tag property seems a good approach.
However, I still must check tag value inside IncludeLayer event, right?
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xequte

4475 Posts

Posted - May 07 2019 :  17:13:31  Show Profile  Reply
Hi

Yes, there is no property (at this stage) to exclude a layer from TImageEnLayerMView, so you can just use tag for this.

Layer.Tag := ord( showThisLayer );


function TMyForm.IELayerMView1IncludeLayer(Sender: TObject; LayerIndex: integer; Layer: TIELayer; var Include: Boolean);
begin
  Include := Layer.Tag = 1;
end;


Nigel
Xequte Software
www.imageen.com
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