[fpc-pascal] EControlC exception

Jonas Maebe jonas.maebe at elis.ugent.be
Wed Feb 6 11:36:05 CET 2008

On 06 Feb 2008, at 11:27, Michael Van Canneyt wrote:

> You can catch this signal using a signal handler:
> PROGRAM ExControlC;
> (* How to capture [Ctrl+C] in Object Pascal.  *)
> {$mode objfpc}{$H+}
>   SysUtils,baseunix;
> procedure term(sig :longint);cdecl;
> begin
>   Writeln('Interrupt caught');
>   Halt;
> end;

Note that in real programs, you should never call writeln (or pretty  
much any other RTL function) from a signal handler, as many routines  
are not re-intrant (and there is no documentation regarding which  
routines are safe to call from signal handlers and which aren't).


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