🚀 go-pugleaf

Grety wrote:

>Is there any API (or a guide at all) to Feed Up/Down a Paper in Role
>Printer?

No.
There is no standard for moving backwards.
Every printer (if it even has that capability) has it's own set of
codes for non-standard activities.
Check with the manufacturer's web site for their codes.

>When I command Printer to print via QuickRep it feeds a A4 size paper
>although I want only 15 cm of Feeding.
>How can I send a design paper to this Role Paper without any Auto feeding?
>I *HAVE TO* put a designed paper into Only 15 cm not a A4 (30 cm).

Several methods exist......

First, don't send form-feeds.
Keep track of the number of lines you print, and just send enough
Line-Feeds to complete the form.
This should work for all non-page-printers.

Second, find the control codes on the manufacturer's site to set form
length. That way, the form feed will be the right length. Note that
some printers only support a few page sizes, so you might not be able
to set them to your particular size.

Third, if you are using the Win API calls StartPage/EndPage, set the
paper size in the DEVMODE. (That's a bit complex, so if you need to do
this, and need help on it, ask about it.) Also, note that there are
only a limited number of page sizes available through Windows.

>In my current project there is a Printer with Role Paper...

Ummm...just wanted to mention that "role" is what an actor plays in a
movie.  "Roll" is what you do to a stone so it won't gather moss.
So it should be a paper roll, or "a Printer with Roll Paper..."