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Forum:
WinDev Forum
Beiträge im Thema:
11
Erster Beitrag:
vor 9 Jahren, 5 Monaten
Letzter Beitrag:
vor 4 Jahren, 3 Monaten
Beteiligte Autoren:
Fabrice Harari, JB, Patrice Terrier, Susanna Moore, arronwall, KenKnight, Abigail Klinton

Hidden Watermark on Image?

Startbeitrag von JB am 20.02.2009 14:31

Does anyone know how I can code a hidden watermark onto an image control?

Thanks

Jonathan

Antworten:

Hi Jonathan,

Not sure about a "hidden" watermark, but you can certainly draw a watermark onto an image control using the "d" functions in windev. Check out dStartDrawing and also the dCopyBlt() function. You will adjust the transparency to get the effect you want.

Cheers!
ken

PS. In WebDev this can only be done at the server level.

von KenKnight - am 20.02.2009 14:55
Hi Jonathan...

To add to Ken's answer, here is a thread about hidden watermark done in Gimp:
http://www.gimpdome.com/index.php?topic=5971

If I understood correctly, Ken's method with a 2% opacity is about what the guy is doing to create the watermark in Gimp...

Seems to me that one of his method to REVEAL the watermark later on should work too...

Best regards



von Fabrice Harari - am 20.02.2009 16:53
Thanks for the tips folks.

All the best.

Jonathan
Funcoder.com

von JB - am 20.02.2009 16:56
Hi Jonathan...

i had a closer look, and if yo want to have a "solid" hidden watermark, you may want to consider an existing solution like
http://www.adptools.com/signmyimage/

they even have a command line version for web servers, by example, and the windows GUI version contains a batch processing option too

Best regards



von Fabrice Harari - am 20.02.2009 19:55
I have only tried to add watermark on image but neber tried to remove it. Any fine tools for suggestion? Thanks in advance.



Best regrads,
Arron


von arronwall - am 16.01.2014 07:46
Hi Arron

why would you want to do that?

Either the image belongs to you and you should have the original one without the watermark, or it doesn't belong to you and you are asking your question on the wrong forum... Here, we are developers, not hackers... Furthermore, the entire point of a watermark is to be nearly impossible to remove...

Best regards

von Fabrice Harari - am 16.01.2014 15:01
Quote
arronwall
I have only tried to add watermark on image but neber tried to remove it. Any fine tools for suggestion? Thanks in advance.



Best regrads,
Arron

Hi there
There are many third party tool which supports to do that directly.And most of them offer a free trail for new users.You can just google it and have a try.Best wishes

von Abigail Klinton - am 22.01.2014 03:11
Look at that... it seems I was wrong

there ARE some hackers among us...

I never understood software developers hacking away... Seems to me it's like sitting on a branch while sawing it near the trunk of the tree...

But what do I know :-)

Best regards

von Fabrice Harari - am 22.01.2014 13:53
ah... who knows...
It's better to just talk about image watermark.

von Susanna Moore - am 06.05.2014 06:51
That could be done easily with GDImage without image alteration, using transparent layers :)

von Patrice Terrier - am 06.05.2014 15:48
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