Flickering Thumbnail Control

Discussions about the ThumbnailEx control of GdPicture.NET.
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win568
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Joined: Tue Mar 24, 2015 1:00 pm

Flickering Thumbnail Control

Post by win568 » Sun Oct 09, 2016 7:21 pm

Hi

After Loading a Thumbnail with LoadFromGDViewer I iterate through all Images to Set the Text with Thumbnail.SetItemText. Unfortunatelly the Thumnail not only sets the Text, it scrolls to the Item, Where i change the Text. In the Next Step i focus the First item. When i load a PDF File with a lot of pages, this causes to a flickering.

Is there s possibility to Lock the Scrolling of the Thumbnail ?? I use the ActiveX Edition.

win568
Posts: 44
Joined: Tue Mar 24, 2015 1:00 pm

Re: Flickering Thumbnail Control

Post by win568 » Tue Oct 11, 2016 11:09 am

Can you give me an advice ??

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Loïc
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Re: Flickering Thumbnail Control

Post by Loïc » Wed Oct 12, 2016 5:22 pm

Hi,

Please do not cross post here an into the helpdesk. We've already replied in the helpdesk asking for a way to reproduce the issue as we are not able to replicate it from our end.

win568
Posts: 44
Joined: Tue Mar 24, 2015 1:00 pm

Re: Flickering Thumbnail Control

Post by win568 » Thu Oct 13, 2016 8:33 am

Hi Loic

Hm. I posted the question days before. As i got no answer, i used your ticket system.

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Loïc
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Re: Flickering Thumbnail Control

Post by Loïc » Thu Oct 13, 2016 9:59 am

For others users interested in the solution (Delphi / Com-ActiveX), here the answer from Roland:
Hi

I found the issue, that causes to this problem. To connect the ThumnailEx to the Viewer i used:

Result := Thumbnail.LoadFromGdViewer(GDViewer.fViewer.ControlInterface) = GdPictureStatus_OK;

After changing this to

Result := Thumbnail.LoadFromGdViewer(GDViewer.fViewer.DefaultInterface) = GdPictureStatus_OK;

it works without Flickering.

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