Generate Barcode From Console - Delphi
BarCode SDK sample in Delphi demonstrating ‘Generate Barcode From Console’
Project1.dpr
��//*******************************************************************
// ByteScout BarCode SDK
//
// Copyright � 2020 ByteScout - http://www.bytescout.com
// ALL RIGHTS RESERVED
//
//*******************************************************************
{
IMPORTANT NOTICE for DELPHI 2007, Delphi 2006 or earlier versions:
-----------------------------------------------------------------------
Usual approach with type library import (so called "early binding") will crash with "stackoverflow" or "floating point error" due to issues in this versions of Delphi.
SOLUTION: Please use so called "late binding" that requires NO type library import and works by creating objects at the runtime like this:
// -----------------
program Project1;
uses
SysUtils,
ComObj,
ActiveX;
var
extractor: Variant;
begin
CoInitialize(nil);
// Create and initialize
extractor := CreateOleObject('Bytescout.PDFExtractor.CSVExtractor') ;
// as usual
extractor.LoadDocumentFromFile ('../../sample3.pdf');
// &
// destroy the object by setting to varEmpty
extractor := varEmpty;
end.
// -----------------
IMPORTANT:
To work with Bytescout BarCode SDK you need to import this as a component into Delphi
To import Bytescout BarCode SDK into Delphi 5 or higher to the following:
1) Click Component | Import ActiveX control
2) Find and select Bytescout BarCode SDK in the list of available type libraries and
4) Click Next
5) Select "Add Bytescout_BarCode_TLB.pas" into Project" and click Finish
To import Bytescout BarCode SDK into Delphi 2006 or higher do the following:
1) Click Component | Import Component..
2) Select Type Library and click Next
3) Find and select Bytescout BarCode SDK in the list of available type libraries and
4) Click Next
5) Click Next on next screen
6) Select "Add Bytescout_BarCode_TLB.pas" into Project" and click Finish
This will add Bytescout_BarCode_TLB.pas into your project and now you can use BarCode object interface (_BarCode class)
}
program Project1;
{$APPTYPE CONSOLE}
uses
SysUtils,
ActiveX, // required for ActiveX support
Bytescout_BarCode_TLB in 'C:\Program Files\Borland\BDS\4.0\Imports\Bytescout_BarCode_TLB.pas';
var
bc: _Barcode;
begin
CoInitialize(nil); // required for console applications, initializes ActiveX support
// create barcode object using CoBarCode class
bc:= CoBarCode.Create();
// set symbology to Code39
bc.Symbology := SymbologyType_Code39;
// set barcode value
bc.Value:= '12345';
// save into PNG image
bc.SaveImage('Code39.png');
// free barcode object by setting to nil
bc:= nil;
CoUninitialize(); // required for console applications, initializes ActiveX support
end.
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