Qt+libpcap混合编程
求大神们帮忙啊，在debian6系统中运用Qt和Libpca混合编程，实现网络抓包工具，其中libpcap中有个循环抓包的函数pcap_loop()；他要求回调函数必须是全局函数或静态函数，当我设置为静态函数时，就不能用信号传递数据到界面了，能帮我解释下吗？讨论下解决方法，先谢谢各位了！
[解决办法]
你的静态函数多个参数 void *data；
void function(int a, char *b ... void *data)
{
YourClass *class = (YourClass *)data;
class->do_something;
}
掉用的时候，就把你的QT的类传进去：
YourClass *class = new YourClass();
function(1, .... (void *)class);

这个是一般回调函数的技巧

[解决办法]
给你写了个例子：
Static_function.pro

#-------------------------------------------------
#
# Project created by QtCreator 2013-06-27T18:03:33
#
#-------------------------------------------------

QT       += core

QT       -= gui

TARGET = Static_function
CONFIG   += console
CONFIG   -= app_bundle

TEMPLATE = app


SOURCES += main.cpp \
    myobject.cpp

HEADERS += \
    myobject.h

main.cpp

#include <QCoreApplication>
#include "myobject.h"


int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    myObject *obj = new myObject;
    showMsg *msg = new showMsg;

    QObject::connect(obj, SIGNAL(mySignal(QString)),msg, SLOT(slotShowMsg(QString)));
    imNonClassFunction((void *)obj);

    return a.exec();
}

myobject.h

#ifndef MYOBJECT_H
#define MYOBJECT_H

#include <QObject>
#include <QString>
#include <QDebug>

int imNonClassFunction(void *data); 
 


class showMsg : public QObject
{
    Q_OBJECT
public:
    explicit showMsg(QObject *parent = 0){}
signals:

public slots:
    void slotShowMsg(const QString &msg);
};

class myObject : public QObject
{
    Q_OBJECT
public:
    explicit myObject(QObject *parent = 0);
    void sendSignalFuncion();
signals:
    void mySignal(const QString &txt);
    
public slots:
    
};

#endif // MYOBJECT_H

myobject.cpp

#include "myobject.h"

int imNonClassFunction(void *data)
{
    myObject *obj = (myObject *)data;
    obj->sendSignalFuncion();
    return 0;
}


myObject::myObject(QObject *parent) :
    QObject(parent)
{
}

void myObject::sendSignalFuncion()
{
    emit mySignal("I am Signal!");
}

void showMsg::slotShowMsg(const QString &msg)
{
    qDebug() << msg;
}