Hi, I'm fairly new to Delphi and I'm trying to print a receipt along with a digital signature drawn on the phone. I turn the canvas vector into a bitmap but I can't seem to output the signature through the GO Link GL-28 printer. And since I'm new at this I'm using Chat GPT which is leading me to use Printer.Canvas.TextOut, Printer.Canvas.DrawText and Printer.Canvas.TextRect. None of which seems to work. I get the undeclared identifier on all three. how can I print the data I want?
procedure TModPrincipal.SendToPrinter(const AData: string);
var
Printer: TPrinter;
i, YPos: Integer;
Rect: TRectF;
begin
Printer := TPrinter.Create; // Create a printer instance
try
Printer.BeginDoc;
YPos := 10;
for i := 1 to Length(AData) do begin
Printer.Canvas.TextOut(10, YPos, AData);
Inc(YPos, 20);
end;
for i := 1 to Length(AData) do begin
Printer.Canvas.DrawText(10, i*20, AData);
end;
for i := 1 to Length(AData) do begin
Rect := TRectF.Create(10, YPos, 200, YPos + 20);
Printer.Canvas.TextRect(Rect, 10, YPos, AData);
Inc(YPos, 20);
end;
finally
Printer.EndDoc;
Printer.Free; // Free the printer after use
end;
end;