How can I describe a "pointer to a constant char" in FreePascal?

For example this C function:

int some_func(const char *arg, ...);

My guess in FreePascal is this(with ctypes unit):

function some_func(const arg: pcchar): cint; cdecl; external;

A constant argument to a function.
I'm not sure, is it a "constant pointer to a char", or a "pointer to a constant char".

In fact in c const "char *arg" does not mean a constant pointer to a character, but a pointer to a constant character,

As in C you need to pass explicit pointers and in Pascal you can do this implicitly by using var or const, I suppose

function some_fuc(const arg: char): cint; cdecl; external;

should do this.

-Michael

... coulb be translated to

some_proc(const arg: PChar, ...);

where the argument cannot be changed in any way (the compiler complains) but the data to which the argument points can be freely changed, thus: (arg + offset)^ := #0; works
I don't know a way to make the data pointed to, as being constant. Have a look athttp://www.freepascal.org/docs-html/ref/refsu61.html#x160-17000014.4.4

Antonio.

The first one applies.

Antonio Fortuny wrote

I don't know a way to make the data pointed to, as being constant.

There is indeed no way to specify that in Pascal.

Jonas