PDF XChange Forum

Hello, I have an issue with inserting EMF image into the PDF.

Attached zip contains emf file, which is inserted into the PDF document ( img.emf ), resulted PDF document and one of 3 bitmap files which is inserted into the emf.

As you can see in the pdf, two of three bitmaps are brighter than originals - they background color has RGB ( 197, 197, 197 ). The third image looks ok. It's background color same as in original bitmap. (192,192,192)

All 3 original bitmaps has same backround color (192,192,192) and EMF which is inserted confirms this. However, for some reasons, your library ( PDF Pro library -4.0.199 ) seems processing bitmaps differently. Could you please let me know why? and how can I avoid this "brighter" result?

( We have purchased version )

Bets regards,
Yury.

Hi Yury,

Could you please try with the current latest build of our SDKs (201) and let us know if the problem still persists?

Best,
Stefan

Same result with 201 build. Any help?

Also there is an issue with lines in EMF.
Please open the attachmed PDF and pay attention at thick lines, which connecting boxes.
Then open the original EMF and see the difference. Any suggestions>

Hi,

When I convert the file here using our PDF-Tools routines - I am not experiencing the same issues as you so I suspect we are going to need to see a code snippet of the settings used - see attached.

Unless of course I am missing something ...

Also the quality of the EMF is such that it is too small to zoom in and really see any detail making a true comparison almost impossible.

If we do need to investigate this further - we will need to know the Windows OS specifically as the GDI can have a significant bearing on the output.

thanks

Hi, I'm attaching the screen shot which illustrates the issue.
From the left side is the PDF document with inserted EMF image. From the right is MS PowerPoint with the same EMF inserted.
I marked some incorrect lines in PDF with the red signs, and green signs in PowerPoint. As you can see, the incorrect lines are thick.
They should be the same as in PowerPoint.

Thanks, sorry for my poor english in the previous explanation.

Thanks Yury,

When the .emf is opened in PPoint and that is converted to PDF with our printing drivers - the result is much better (the attached Presentation1.pdf).

And when one tries to create a PDF directly from the .EMF using either the Viewer or the PDF Tools - the result is distorted. Also attached is a screenshot of how the file looks in the "Edit/Preview" menu in the Viewer's New Document From images dialogue.

We are now checking why this is happening.

Best,
Stefan

Also - please advise your Windows OS as previously requested.

Thanks

Win7 x64. However this happens on x86 as well.
Thank you and looking forvard the solution.

Hi Yury,

The initial problem with the different background colours is now resolved - the fix will be in the next build. A sample file is attached.

The second problem with the line thickness required a ticket in our system:
#1489: PDF Tools: Issue with line thinkness when converting EMF files to PDF
So that we can work on this problem as well - and when it's resolved we will post here in this topic.

The third thing is the conversion of .emf files to PDF through the Viewer - the Viewer rasterises emf files before conversion and there is no way to control the resolution used (for now) - so the Viewer should not be used for such conversions.

Best,
Stefan

Ok. Thank you. Please let me know when the new build is available

You are welcome Yury,

And the new build will be announced on the website.

Cheers,
Stefan

Hi Yury,

On investigating this issue further in some depth in an attempt to resolve for the next release - I regret this is not going to be possible, I will try and explain ..

EMF files contain 2 records for use when displaying/converting such files - one for use by the GDI and one for use by Windows GDI+ - the latter is 'private' and not published by MS.

Our products rely and utilize the Windows GDI for such display and conversion as do most others unless they are directly reliant on GDI+ (e.g. MS PPT etc) - therefore depending on the viewer used - such images will either contain the thin or thick line variance shown - for example see the 2 screen shots of Imaging viewers that show think lines as we do -;

Therefore I regret - despite our best efforts this issue is not resolvable at this time and there is little prospect of us being able to resolve any time soon.

Sorry for the bad news - but hopefully the above explains in a reasonable manner and demonstrates that we have genuinely tried to resolve.