Re: RichAction and TPDFDocument componant

Author

Message

Sergey Tkachenko

Posted: 02/21/2005 23:37:07

Just a note about how PDF components work.

PDF is very similar to windows metafile - it contains commands like "draw

text here", "draw rectangle here", etc.

PDF components provides a Canvas where TRichView (more exactly,

TRVReportHelper) can draw. Then they capture this drawing output and save it

to PDF file.

What's why they cannot, for example, convert RTF (or other file format) to

PDF themselves. It's not a matter of simple format convesion. They need some

engine drawing the document on canvas. TRichView can do it.

PDF component quality depend on how many PDF commands (like "draw text

here") they support, as well as how they support PDF-specific features.

> Mike - sorry to bother you, but I wanted to ask your opinion of the pdf

lib

> you are using. I know you have these issues at the moment with RVF but I

> wonder if you know already whether the library is any good. I need one but

> my experience is they all have something they can't do and it's a pain in

> the you-know-what.

> Any comments you can offer would be appreciated.

> Does the lib handle native RVF? or are you streaming to RTF first?

> Alan