Regarding question2, ulpcallback is a structure of type ulp_callback, How to declare it in typemap file??

for constant char * ,i have added a code in typemap file which looks like

const char *    T_PV

Simillarly how can i declare struct ulp_callback ulpcallback in typemap??

ulpcallback is a datatype in one of my C function. To call that function from perl, i have added a subroutine in .xs file.which looks like. 
int f1(a,b,c)
  int a
 int b
 ulpcallback c
OUTPUT:
RETVAL

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when i try to compile it ,it is giving an error that,Error: 'ulpCallback' not in typemap in Mytest2.xs, line 26

here ulpCallback is of type struct ulp_Callback (in C ). I want to declare that in typemap file .How to do that?? I am not familiar to perlxs..and i have no idea abt T_PV etc. Plz help me regarding this.

I added ulpCallback in typemap file as

 ulpCallback T_PTROBJ

Now its not giving that error,But after running make it shows an error Mytest2.c:164: error: conversion to non-scalar type requested Any help regarding this??? Hi all,

My C function expects an array(single dimension)as a parameter,how to declare it in .xs file?? 

int f1(a,b,c[LEN])
   int a
   int b
   unsigned char c[LEN]
 OUTPUT:
 RETVAL

[download]

This gives an error saying that invalid declaration of cLEN.Plz help me.

In reply to perlxs help by KVB

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