c - How to retrieve a variable from the Apache configuration inside the module? -

i'm building custom apache module. how retrieve variable apache configuration inside module?

see variable "some_var_config_from_apache_or_htaacess" inside apache module:

/* source: http://people.apache.org/~humbedooh/mods/examples/mod_example_1.c */  /* include required headers httpd */ #include "httpd.h" #include "http_core.h" #include "http_protocol.h" #include "http_request.h"  static void register_hooks(apr_pool_t *pool); static int example_handler(request_rec *r);  /* define our module entity , assign function registering hooks  */  module ap_module_declare_data   example_module = {     standard20_module_stuff,     null,            // per-directory configuration handler     null,            // merge handler per-directory configurations     null,            // per-server configuration handler     null,            // merge handler per-server configurations     null,            // directives may have httpd     register_hooks   // our hook registering function };  static void register_hooks(apr_pool_t *pool)  {     ap_hook_handler(example_handler, null, null, apr_hook_last); }  /* handler function our module.  * fun happens!  */  static int example_handler(request_rec *r) {     if (!r->handler || strcmp(r->handler, "example-handler")) return (declined);     // first thing write simple "hello, world!" client.    //ap_rputs("hello, world!", r);    ap_rputs(some_var_config_from_apache_or_htaacess, r);     return ok; }