Default printer is a POS printer and report print 6000 pages

rbuser

My application is a POS The default printer is a POS printer Tmu200 or a
thermal printer . If I try to print a report with the default printer as the
Tmu200 (epson) on a inkjet printer the report goes wild and report that it
will print 6000 pages. The preview always show the right information but
when I choose the printer the report print lots of blank pages. If I change
the default printer to an inkjet the it will print well even on the POS
printer.
I seen others reply that relate this problems with the margins. Need
recommendations.
D6 RB=dclRB66.dpl
Carlos

nicocizik

Hi Carlos,

Yes, this is probably related to the margins you have set for your report.
When ReportBuilder generates a report, it uses the printer driver to
determine how much space it has to print a page. If the margins of the
report are outside the printable area of the printer, ReportBuilder will try
to overflow to the next page essentially printing infinite pages. Try to
find out the printable area of your POS printer and change the margins of
your report accordingly.

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rbuser

I want to give the option to change the default printer prior of generating
the report.
How can I do it?

Carlos

nicocizik

Hi Carlos,

There is no built in way to change the default printer in Delphi. Depending
on which Operating System you are using, you may have to chang the Win.ini
file along with the registry. Starting with Windows NT, all default printer
information is found in the registry. I did a quick search in the Google
groups and found numerous articles of others trying to change the default
printer as well. This would probably be a good place to start looking for
example code to do this.

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rbuser

I tried to use this command an get a av error
ppreprot1.printdialog.showmodal.

Is there a way where I can replace the driver RB is going to use prior to
the generation of the report?

nicocizik

Hi Carlos,

The reason you are receiving an AV error is that you are trying to display
the print dialog before it has been created. You will need to create a new
print dialog and access its properties after that. Once you create the
TppPrintDialog, you will have access to the printer and be able to change
the default printer displayed in the dialog.

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