[fpc-pascal] *** SPAM *** Re: USB Human Interface Devices

[Jean SUZINEAU]

Le 16/08/2019 à 17:11, James Richters a écrit :
> Can I even do threads in a console program?

Yes, you can.  I have in production some console code (worse: in a dll 
called by a console program written in 4gl (4js Genero www.4js.com)) 
with threads which compile unmodified  under Linux and Windows.

By writing a descendant of TThread it's relatively easy to write a 
thread in FreePascal ( 
https://wiki.freepascal.org/Multithreaded_Application_Tutorial ).
 From your (non main) thread you can execute a procedure in the main 
thread by calling TThread.Synchronize.

 From what I remember, the main problem in console is that you need to 
call regularly CheckSynchronize() ( from unit Classes ) from your 
program which run the main thread.
That will be simpler for you, in my case, I had  to export from my dll a 
pascal function calling CheckSynchronize() and call it regularly from 
the 4gl program with a timer ...

As far as I remember, it works just with a queue, when you call 
Synchronize you add a function call to the queue, and CheckSynchronize() 
read the queue and do the actual call of your function.