URGENT!!! Send Control characters to POS PRINT

rbuser

I need to open a cash box connect to a POS PRINTER EPSON TM88II. after print
a report.
the printer is serial and it is connect to COM1.

I'cant open the port COM1 because raise an exception "PORT IS BLOCKED..."
for pos printer.

How can I send a control character via reportbuilder, like PRINT ESC +
CHR(27) + "P" + CHR($25)... after
i print the report.....

Thanks...

nicocizik

Hi Jaime,

ReportBuilder renders to the printer using the Delphi TCanvas class and via
calls to Windows GDI functions.

We do not have any direct experience with sending escape codes directly to
the printer driver. According to the Windows API documentation, the
ExtEscape function allows applications to access capabilities of a
particular device that are not available through GDI. Try searching the
Windows API docs and Google for more information.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

look at the epson control font
and print an 'A' in that font
otherwise look at the Escape() api function that lets you 'pass through' esc
sequences if the driver supports it
so you can easily wrap this in a RAP function to print esc codes in the
report
been there do it all the time
cu
marc

rbuser

Nico,
this a somthing you could easily implement in the RB core i suppose...
cu
marc

rbuser

Jaime wrote:



I suppose you could do it with RAP, but I have not tried it. I am just
now converting our POS application to RB so it is something I will have
to deal with. Another option is to open the cash drawer by passing
through your escape code to your printer right before printing the
report. We already use a routine for this to open the cash drawer
outside of a POS transaction.