Re: Is it possible/acceptable to create a component in Gambas that depends on a shared library?

[Charlie Reinl <Karl.Reinl@xxxxxxxxxx>]

Am Freitag, dem 06.02.2026 um 15:16 -0500 schrieb Lee:
> The recent thread on reading barcodes prompted me to revisit this
> idea.
> 
> A while back I wrote a project that used "droidcam" and "zbarcam" to
> read barcodes using a smartphone. It works adequately, but 
> managing each external process to make the user experience less
> cumbersome is more cumbersome in the code.
> 
> It would be nice to be able to manage the reader directly from
> Gambas. But, it is even acceptable to create a component in 
> Gambas that depends on a shared library?
> 
> I see that gb.scanner relies on `scanimage`, but that is a command-
> line tool the existence of which is easily tested with 
> System.Exist(). Also, I see that gb.openssl relies on the "openssl"
> library but that component is written in C and appears to 
> statically link with the library.
> 
> Is there a "proper" way to do what I am asking including relatively
> easily testing for the existence of the shared library to 
> raise an error if it does not exist? Or is creating a component in
> Gambas that relies on a shared library (perhaps highly) 
> discouraged if not prohibited?
> 
> 
Salut Lee,

which scanimage   returns /usr/bin/scanimage 
else nothing

-- 
Amicalement
Charlie