Barcode fonts need to be installed in Windows.
When we want to show a barcode we need to put * before and after the text code:
Text: ABC123
Barcode text: *ABC123*
Barcode text font has to set then to one of the barcode font. If you just want to show a barcode in a label component you can use the OnGetLabel event with a line like this:
Result:= "*"+<entry_name>+"*";
where <entry_name> is a valid string entry with the required value for barcode.
Result:= "*"+inttostr(<entry_name>)+"*";
where <entry_name> is a valid integer entry with the required value for barcode.
If the barcode is an input field it is suggested using an additional label with a calculated field to add the *s.