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Watermarking
Posted: Tue Oct 21, 2008 4:18 pm
by dominique
Hi GFLSDK programers !
I don't know how to do water marking and if it's difficult to implement.
Should it be possible to add this kind of skill in GFL?
Rgds
Re: Watermarking
Posted: Tue Oct 21, 2008 4:31 pm
by xnview
You have gflBitBlt
Posted: Tue Oct 21, 2008 4:54 pm
by dominique
Ok, if you told me it's possible using this function, I think I can do what I want as usual
I'll give some news about this.
Posted: Tue Oct 21, 2008 5:12 pm
by dominique
And what is the difference between gflBitblt and gflBitbltEx ?
Maybe the second one change the alpha channel too ?
I'll search some information about invisible watermarking... if someone knows about this
Posted: Mon Oct 27, 2008 5:28 pm
by dominique
Ok, I can merge a png with a RGB image using gflBitbltEx.
I try to do the same for greylevel images using gflBitblt and TransparentIndex without success. What is exactly TransparentIndex?
Thx,
Posted: Thu Oct 30, 2008 1:50 pm
by xnview
TransparentIndex is used as transparent index for picture with colormap
Posted: Thu Oct 30, 2008 5:58 pm
by dominique
Do you have something to do transparency merging with greyscale images?
I wrote something that works fine but I prefer to use gfl functions.
Posted: Tue Nov 04, 2008 1:01 pm
by dominique
I use gflAddText. I'd like to add transparency to the text.
Is it possible to add this feature using the alpha channel of the text color?
Is there any function to get the text's size given a selected font (gflGetTextRect)?
Rgds
Posted: Wed Nov 26, 2008 7:34 am
by dominique
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