[Vala] passing string length in VAPI file

[rastersoft <raster rastersoft com>]

Hi all:

I'm completing the XCB api for Vala, but I have a problem: there are 
several functions that receive a string and its length, like:

    xcb_intern_atom (xcb_connection_t *_conn_, uint8_t 
_only_if_exists_, uint16_t _name_len_, const char *_name_);

Currently I'm doing it this way, by defining an intermediate function:

        [CCode (cname = "xcb_intern_atom")]
        public InternAtomCookie *l_intern_atom(bool 
only_if_exists,uint16 len, string name);

        [CCode (cname = "vala_xcb_intern_atom")]
        public InternAtomCookie *intern_atom(bool only_if_exists,string 
name) {
            this.l_intern_atom(only_if_exists,(uint16)name.length, name);
        }

But it's not very elegant. Is there a way of doing this directly in a 
VAPI file?

I tried with array_length_pos, but seems to not work in this case.

Thanks.

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                         RASTER    (Linux user #228804)
raster rastersoft com              http://www.rastersoft.com