ImageEn Forum - Save Thumbnail & Image which are different

Profile Join Active Topics Forum FAQ

Forum membership is Free! Click Join to sign-up
Username:	Password:
Save Password
Forgot your Password?

All Forums

ImageEn Library for Delphi, C++ and .Net

ImageEn and IEvolution Support Forum

Save Thumbnail & Image which are different

New Topic

Reply to Topic

Author

Topic

yogiyang

India
727 Posts

Posted - Dec 03 2020 : 06:41:33

Hello,

I don't know as to how to explain this but...

I have a need to save a JPEG file in which its thumbnail is different then its actual image.

Meaning the thumbnail as shown in Windows explorer and IEMView would be different then the actual image.

Is this possible? If yes then how?

TIA

Yogi Yang

xequte

38611 Posts

Posted - Dec 04 2020 : 19:23:06

Hi Yogi

You cannot change the thumbnail that Windows Explorer shows. It will always show the content of the image (OK, this is not 100% true, but true for all practial purposes).

You can make TImageEnMView show a different thumbnail that the image content, either by:

- Enabling TImageEnMView.EnableLoadEXIFThumbnails and setting a different EXIF bitmap (JPEG, TIFF, only)

https://www.imageen.com/help/TImageEnMView.EnableLoadEXIFThumbnails.html
https://www.imageen.com/help/TIOParams.EXIF_Bitmap.html

- Override the drawing of the thumbnail, e.g. in the OnImageDraw event

https://www.imageen.com/help/TImageEnMView.OnImageDraw.html

Nigel
Xequte Software
www.imageen.com

Topic

New Topic

Reply to Topic