[fpc-pascal] Pointer to an array of PChar strings
Marco van de Voort
marcov at stack.nl
Tue Jan 19 15:39:47 CET 2010
In our previous episode, Graeme Geldenhuys said:
> I'm working with a C library that returns an array of strings. So that is
> type PPChar. I C library does the array allocation, but doesn't do the
> freeing of the array.
> How am I supposed to free an array of PChar strings? I think I need to
> improve my iteration too, because I'm moving the pointer of wlst, so I
> probably need to make a backup of the original pointer before the iteration.
The array is 0 terminated, iow the last array of pchar is nil.
var p2 : ppchar;
If assigned(p) then
while assigned(p2) do
where cfree is the free() corresponding to the malloc with which it was
allocated in the lib. (usually libc's)
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