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unit unitmain;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, StdCtrls,
Buttons, Printers;
type
{ TForm1 }
TForm1 = class(TForm)
Button1: TButton;
btnZPL: TButton;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
ListBox1: TListBox;
Memo1: TMemo;
procedure btnZPLClick(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure FormCreate(Sender: TObject);
private
{ private declarations }
procedure PrintString(S:String);
procedure PrintStream(St:TStream);
procedure PrintSample;
procedure PrintZebraSample;
function SetCurrentPrinter: boolean;
public
{ public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.lfm}
const
CRLF = #13#10;
{ TForm1 }
procedure TForm1.FormCreate(Sender: TObject);
begin
// fill in the printer list
Listbox1.Items.Assign(Printer.Printers);
end;
procedure TForm1.PrintString(S: String);
var
Written: Integer;
begin
Printer.Write(S[1], Length(S), Written);
end;
const
MaxBufSize = 256;
procedure TForm1.PrintStream(St: TStream);
var
Written: Integer;
Buffer: array[0..MaxBufSize-1] of byte;
begin
while St.Position<St.Size do begin
Written := St.Read(Buffer, MaxBufSize);
Printer.Write(Buffer, Written, Written);
end;
end;
procedure TForm1.PrintSample;
var
S: TStringStream;
begin
// print a plain string
PrintString('=== FIRST A STRING ==='+LineEnding);
PrintString(Memo1.Text);
PrintString('=== NOW USING A STREAM ==='+LineEnding);
// print using a stream
S := TStringStream.Create(Memo1.Text);
PrintStream(S);
S.Free;
end;
procedure TForm1.PrintZebraSample;
var
s: String;
begin
// sample code taken from the Online ZPL viewer
// http://labelary.com/viewer.html
s :=
'^XA' + CRLF +
'^FX Top section with company logo, name and address.' + CRLF +
'^CF0,60' + CRLF +
'^FO50,50^GB100,100,100^FS' + CRLF +
'^FO75,75^FR^GB100,100,100^FS' + CRLF +
'^FO88,88^GB50,50,50^FS' + CRLF +
'^FO220,50^FDInternational Shipping, Inc.^FS' + CRLF +
'^CF0,40' + CRLF +
'^FO220,100^FD1000 Shipping Lane^FS' + CRLF +
'^FO220,135^FDShelbyville TN 38102^FS' + CRLF +
'^FO220,170^FDUnited States (USA)^FS' + CRLF +
'^FO50,250^GB700,1,3^FS' + CRLF +
'^FX Second section with recipient address and permit information.' + CRLF +
'^CFA,30' + CRLF +
'^FO50,300^FDJohn Doe^FS' + CRLF +
'^FO50,340^FD100 Main Street^FS' + CRLF +
'^FO50,380^FDSpringfield TN 39021^FS' + CRLF +
'^FO50,420^FDUnited States (USA)^FS' + CRLF +
'^CFA,15' + CRLF +
'^FO600,300^GB150,150,3^FS' + CRLF +
'^FO638,340^FDPermit^FS' + CRLF +
'^FO638,390^FD123456^FS' + CRLF +
'^FO50,500^GB700,1,3^FS' + CRLF +
'^FX Third section with barcode.' + CRLF +
'^BY5,2,270' + CRLF +
'^FO100,550^BC^FD12345678^FS' + CRLF +
'^FX Fourth section (the two boxes on the bottom).' + CRLF +
'^FO50,900^GB700,250,3^FS' + CRLF +
'^FO400,900^GB1,250,3^FS' + CRLF +
'^CF0,40' + CRLF +
'^FO100,960^FDShipping Ctr. X34B-1^FS' + CRLF +
'^FO100,1010^FDREF1 F00B47^FS' + CRLF +
'^FO100,1060^FDREF2 BL4H8^FS' + CRLF +
'^CF0,190' + CRLF +
'^FO485,965^FDCA^FS' + CRLF +
'^XZ' + CRLF;
PrintString(s);
end;
function TForm1.SetCurrentPrinter: boolean;
begin
result := false;
if Listbox1.ItemIndex<0 then begin
ShowMessage('Select a printer from the list');
exit;
end;
// on a freshly retrieved printer list, either method could
// be used to select a printer: SetPrinter or PrinterIndex
//Printer.PrinterIndex := Listbox1.ItemIndex;
Printer.SetPrinter(ListBox1.Items[Listbox1.ItemIndex]);
result := true;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if not SetCurrentPrinter then
exit;
Printer.Title := Caption;
Printer.RawMode := True;
Printer.BeginDoc;
PrintSample;
Printer.EndDoc;
end;
procedure TForm1.btnZPLClick(Sender: TObject);
begin
if not SetCurrentPrinter then
exit;
Printer.Title := 'Zebra test';
Printer.RawMode := True;
Printer.BeginDoc;
PrintZebraSample;
Printer.EndDoc;
end;
end.
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