Question

How to use TOPOSPOSPrinter - Delphi

Asked by: PEGGY

Hi,

I am trying to print on a receipt printer using OPOS, but am facing a few issues. To begin with, I have installed the SetupPos application from the Epson site and am able to successfully print using the 'CheckHealth Interactive' option. I have then imported the OPOSPOSPrinter.ocx in Delphi and this resulted in the TOPOSPOSPrinter component getting added to the 'ActiveX' pallete in my Delphi IDE. I have then created a new application and dropped this component on the form, and on a button click event wrote the below code.
procedure TForm1.Button1Click(Sender: TObject);
begin
try
  Oposposprinter1.Open('TestPrinter'); //LDN for receipt printer
  Oposposprinter1.ClaimDevice(1000);
  Oposposprinter1.DeviceEnabled := True;
  Oposposprinter1.PrintNormal(PTR_S_RECEIPT,WideString('Hello - Testing POS printer'));
finally
  Oposposprinter1.DeviceEnabled := False;
  Oposposprinter1.ReleaseDevice;
  Oposposprinter1.Close;
end;

Whle compiling this simple application, I get an "Undeclared Identifier: 'PTR_S_RECEIPT'" error at the line Oposposprinter1.PrintNormal(PTR_S_RECEIPT,WideString('Hello - Testing POS printer')); in the code. Is there something that I am missing in the way the ocx should have been installed? I am not sure how the PTR_S_RECEIPT constant should be used. Should the PTR_S_RECEIPT be explicitly declared in my application or is there any constants file that I should be adding in my uses clause?

Appreciate any help.
Regards
P




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Asked On
2009-10-12 at 07:06:41ID24804543
Tags

OPOS

,

Delphi

Topics

Delphi Printing

,

Delphi Components

Participating Experts
2
Points
125
Comments
5

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Answers

 

by: epasquierPosted on 2009-10-12 at 10:03:27ID: 25552883

You have first to import the activeX dll declaring the OPOS constants
Opos_Constants.dll

then use the generated .PAS in your unit, this will solve the PTR_S_RECEIPT problem

 

by: epasquierPosted on 2009-10-12 at 10:07:12ID: 25552913

If this not enough to make it work, you will have to check that the DeviceEnabled is correctly implemented in the OposPOSPrinter_CCO_TLB.pas because when I imported the OPOSPOSPrinter.ocx it was not correctly done. I had to implement it myself (and a few other property getter/setter)

 

by: epasquierPosted on 2009-10-15 at 05:42:50ID: 25579880

Is it ok for you or do you still have issues ?

 

by: PEGGYPosted on 2009-10-26 at 14:23:06ID: 31646163

Thanks a lot.

 

by: roosmalenPosted on 2010-10-23 at 05:33:51ID: 33972868

How can I do this?

"You have first to import the activeX dll declaring the OPOS constants
Opos_Constants.dll then use the generated .PAS in your unit, this will solve the PTR_S_RECEIPT problem"

Thanks for your reply.

Stefan

20120131-EE-VQP-002

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