Is it possible to create custom buttons?

[ceremcem]

Is it possible to run custom commands with custom buttons? For example, I defined a command in gdbinit like so:

define reload 
    shell make mytarget
    file path/to/elf
    tb main 
    continue 
end 

I would like to use this function whenever I changed my source code, through a button, something like this:

Is this possible?

[ceremcem]

This feature might be left after this one