Barcode generation on Windows and Linux [Solved]

luca

Hi all,
I must develop an application that print some barcode (code 39) .
The application should run on windows and linux.

I know that on Windows it's possible using barcode font (for example IDAutomationHC39M) but what on Linux?

Are there some Qt/C++ API that allow barcode generation?

Eddy

"I think this one can be used for your case too: ":http://www.qtcentre.org/wiki/index.php?title=EAN-13_Barcode_class

luca

[quote author="Eddy" date="1311416375"]"I think this one can be used for your case too: ":http://www.qtcentre.org/wiki/index.php?title=EAN-13_Barcode_class[/quote]

Good link, thanks.
For me it should be better the "Code 39".

Now I found a way to install IDAutomationHC39M in my Slackware Linux so I can print with it both on linux and windows.

I actually use the font this way:
@
...
...
painter.setFont(QFont("IDAutomationHC39M", 30));
painter.drawText(rect(), Qt::AlignCenter, "123456789");
...
@

Is it possible to "embed" the font in my Qt application to avoid font installation on every system I use it?

Eddy

I've never done it with a font, but you could try to add the file in a qrc file using the resource system.

I hope it works.

Edit : try to use it like this :
@
SetFont(":/fonts/yourfont");

@

luca

[quote author="Eddy" date="1311417465"]I've never done it with a font, but you could try to add the file in a qrc file using the resource system.

I hope it works.

Edit : try to use it like this :
@
SetFont(":/fonts/yourfont");

@[/quote]

It doesn't works.
I think SetFont() doesn't accept a filename.

Eddy

Try the following to add your font to your application :
@int QFontDatabase::addApplicationFont ( const QString & fileName ) [static]@
(please read the notes in the docs for linux)
Use it like this :

@QFontDatabase fontDatabase;
fontDatabase.addApplicationFont(":/fonts/yourfont");@

And then use setFont

jensen82

Here is an interesting SDK for you: "Barcode SDK":http://www.leadtools.com/sdk/barcode/

luca

[quote author="Eddy" date="1311524605"]Try the following to add your font to your application :
@int QFontDatabase::addApplicationFont ( const QString & fileName ) [static]@
(please read the notes in the docs for linux)
Use it like this :

@QFontDatabase fontDatabase;
fontDatabase.addApplicationFont(":/fonts/yourfont");@

And then use setFont
[/quote]

Thanks a lot Eddy, it works!

I tried under Linux (Slackware 13.37) and it works without problem. I don't know why the documentation note say that:
@
Adding application fonts on Unix/X11 platforms without fontconfig is currently not supported.
@

Eddy

You're welcome. I'm glad it works for you.

Maybe the note in the docs is from ancient times when it didn't work ;)

Have fun.

qtbrandson

I only tried those which support Code 39 barcode generating using .NET app. It support C++, C#. You may search online.