Hey Huyilin,

What kind of PDF file? I've had to mess around with a number of PDF generation libraries in the past and they all become a huge pain when dealing with Chinese characters.

Copy & paste functionality is not part of the core document format either, so it used to only be supported by Adobe software and not other applications. There is more support for it now, but no guarantees. And since the data tends to get copied by the operating system there is no guarantee that the receiving application will even know how to interpret it.

You share any details on your setup?