Printing pdf Flattening

[giusepped]

I produce pdf with standard QPrinter.
On some machines, the printing of the produced pdf is ok.
But on other machines (of my customers) the printing form Adobe Reader falls in a lengthy flattening process.
The pdf contains plots of Qwt class (Histograms and curves).
I read from here http://www.jjdash.demon.co.uk/MGDS/mgds-slowpdf-tn.html
that the problem could be a bug in Adobe when there are pattern filled (as in my case of qwtplot), Reader can be slow.
But I use qwtplot with the very large pattern fill!
Someone has some hint?

[npclaudiu]

You could try to insert those plots as plain images, or if you need them as vector graphics, try using PostScript.

[johnmcrin]

Hi, I've been sent a pdf file that's 2.038KB. When I try to print, I get the message that the file is flattening and then it hangs and doesn't print. I tried running the pdf optimizer under advanced options, and when I access the layer viewer, there are no layers. I have also tried reducing the document size. Nothing seems to help. Any suggestion?

[d_stranz]

And your question has what relationship to Qt programming?