custom button

hello, i'm new to linuxcnc and i'm looking for how to add a button in the gui (qtdragon preferably) and drive an output with it. can you help me please? i didn't find any examples on the linuxcnc site and the explanations aren't clear to me.
thank you in advance.

Hello friend
You can use Glade 3.8.6 software and edit the file responsible for the image in LinuxCNC

 

Qtdragon uses Qt so glade is not so useful, it would require QtDesigner.
There is a button to turn a laser on and off that is included in QtDragon.
The button is on the offsets tab. the pin is qtdragon.btn-laser-on

If that is not what you want there are more options, such as macro buttons.
Customizing the screen layout with extra buttons is not super hard - where would you want the button?

OK, thanks. I'll give it a try. I'd like to add a button instead of macro buttons in qtdragon. thanks in advance.