Der GCC-Compiler beschwert sich über Zeile 21 in der IRCBot.cpp.
Fehlermeldung:

../IRC/IRCBot.cpp: In member function ‘int IRCBot::connectIRC()’:
../IRC/IRCBot.cpp:28: error: no matching function for call to ‘IRCBot::hook_irc_command(const char [13], int (IRCBot::*)(char*, irc_reply_data*, void*))’
../IRC/IRC.h:79: note: candidates are: void IRC::hook_irc_command(char*, int (*)(char*, irc_reply_data*, void*))
make: *** [IRC/IRCBot.o] Error 1

Hat jemand vielleicht eine Idee, wie man das hinbekommen könnte?

IRCBot.cpp

#include <iostream>
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
#include "IRCBot.h"

using namespace std;

IRCBot::IRCBot() : IRC()
{

	//Konstruktor

}

int IRCBot::connectIRC()
{

	IRCBot conn;

	conn.hook_irc_command("irc response", &IRCBot::IRCCommandHandler); 

	conn.start("irc.efnet.ch",6667,"test","test","test","password");

	conn.join("#test");

	conn.message_loop();

	return 0;
}

int IRCBot::IRCCommandHandler(char* params, irc_reply_data* hostd, void* conn)
{
	IRCBot* irc_conn=(IRCBot*)conn; /* notice that you are passed a pointer to the connection object */

	irc_conn->disconnect();

	return 0;
}

IRCBot.h

#ifndef IRCBOT_H_
#define IRCBOT_H_

#include "IRC.h"

class IRCBot : public IRC {
	public:
		IRCBot();
		int connectIRC();
		int IRCCommandHandler(char*, irc_reply_data*, void*);
		int end_of_motd(char* params, irc_reply_data* hostd, void* conn);
	private:	
};

#endif /*IRCBOT_H_*/

IRC.cpp

[...]
void IRC::hook_irc_command(char* cmd_name, int (*function_ptr)(char*, irc_reply_data*, void*))
{
	if (!hooks)
	{
		hooks=new irc_command_hook;
		hooks->function=0;
		hooks->irc_command=0;
		hooks->next=0;
		insert_irc_command_hook(hooks, cmd_name, function_ptr);
	}
	else
	{
		insert_irc_command_hook(hooks, cmd_name, function_ptr);
	}
}
[...]

IRC.h

#include <stdio.h>
#include <stdarg.h>

#define __CPIRC_VERSION__	0.1
#define __IRC_DEBUG__ 1

#define IRC_USER_VOICE	1
#define IRC_USER_HALFOP	2
#define IRC_USER_OP		4

struct irc_reply_data
{
	char* nick;
	char* ident;
	char* host;
	char* target;
};

struct irc_command_hook
{
	char* irc_command;
	int (*function)(char*, irc_reply_data*, void*);
	irc_command_hook* next;
};

struct channel_user
{
	char* nick;
	char* channel;
	char flags;
	channel_user* next;
};

class IRC
{
public:
	IRC();
	~IRC();
	int start(char* server, int port, char* nick, char* user, char* name, char* pass);
	void disconnect();
	int privmsg(char* target, char* message);
	int privmsg(char* fmt, ...);
	int notice(char* target, char* message);
	int notice(char* fmt, ...);
	int join(char* channel);
	int part(char* channel);
	int kick(char* channel, char* nick);
	int kick(char* channel, char* nick, char* message);
	int mode(char* modes);
	int mode(char* channel, char* modes, char* targets);
	int nick(char* newnick);
	int quit(char* quit_message);
	int raw(char* data);
	void hook_irc_command(char* cmd_name, int (*function_ptr)(char*, irc_reply_data*, void*));
	int message_loop();
	int is_op(char* channel, char* nick);
	int is_voice(char* channel, char* nick);
	char* current_nick();
private:
	void call_hook(char* irc_command, char*params, irc_reply_data* hostd);
	/*void call_the_hook(irc_command_hook* hook, char* irc_command, char*params, irc_host_data* hostd);*/
	void parse_irc_reply(char* data);
	void split_to_replies(char* data);
	void insert_irc_command_hook(irc_command_hook* hook, char* cmd_name, int (*function_ptr)(char*, irc_reply_data*, void*));
	void delete_irc_command_hook(irc_command_hook* cmd_hook);
	int irc_socket;
	bool connected;
	bool sentnick;
	bool sentpass;
	bool sentuser;
	char* cur_nick;
	FILE* dataout;
	FILE* datain;
	channel_user* chan_users;
	irc_command_hook* hooks;
};

Außerdem kannst du an einen normalen Funktionszeiger keine Klassenmethode übergeben (das scheitert an einem fehlenden this-Zeiger), sondern nur globale Funktionen oder statische Methoden.

PS: Wieso legst du in der IRCBot::connectIRC() eigentlich ein neues Objekt an? Du hast doch schon eins (namens *this). Und dein Objekt 'conn' wird am Ende der Methode wieder gelöscht und vergisst die ganzen Callback-Funktionen wieder.

Danke für die Antworten!