大侠们请进

一开始上传了.rar 文件，大家看着不方便，所以直接将代码列出：
下面是我的loop.cpp文件：

#include "loop.h"
#include <qlabel.h>
#include <qpushbutton.h>
#include <qstring.h>
#include <unistd.h>
#include <signal.h>
#include <sys/time.h>
/*声明信号处理函数，此函数在进程收到信号的时候调用*/
static void sig_handler(int signo);
long lastsec,countsec;   /*这两个变量分别用来保存上一秒的时间和总共花去的时间*/
int i;  /*label控件中要显示的变量*/
QLabel *girlPixmapLabel;
MyHelloForm *hello;

MyHelloForm::MyHelloForm( QWidget* parent, const char* name, WFlags fl)
     :HelloBaseForm(parent, name, fl)
{
connect(helloPushButton,SIGNAL(clicked()),this,SLOT(timer()));
connect(eddyPushButton,SIGNAL(clicked()),this,SLOT(showMe()));
}

MyHelloForm::~MyHelloForm()
{
}

void timer(void)
{
     struct itimerval v;      /*定时器结构体*/
     long nowsec,nowusec;    /*当前时间的秒数和微秒数*/
  
     /*注册SIGUSR1和SIGALARM信号的处理函数为sig_handler*/
     if(signal(SIGUSR1,sig_handler)==SIG_ERR)
     {
          girlPixmapLabel->setText( "Unable to create handler for SIGUSR1" );
          exit(0);
     }
     if(signal(SIGALRM,sig_handler)==SIG_ERR)
     {
          girlPixmapLabel->setText( "Unable to create handler for SIGALRM" );
          exit(0);
     }
     /*初始化定时器初值和当前值*/
     v.it_interval.tv_sec=9;
     v.it_interval.tv_usec=9000000;
     v.it_value.tv_sec=9;
     v.it_value.tv_usec=9000000;
/*调用setitimer设置定时器，并将其挂到定时器链表上，这个函数的三个参数的含义分
别是设置ITIMER_REAL类型的定时器，要设置的值存放在变量v中，该定时器设置前的值
在设置后保存的地址，如果是这个参数为NULL，那么就放弃保存设置前的值*/
     setitimer(ITIMER_REAL,&v,NULL);
     lastsec=v.it_value.tv_sec;
     countsec=0;
/*该循环首先调用getitimer读取定时器当前值，再与原来的秒数比较，当发现已经过了
一秒后产生一个SIGUSR1信号，程序就会进入上面注册过的信号处理函数*/
     while(1)
     {
          getitimer(ITIMER_REAL,&v);
          nowsec=v.it_value.tv_sec;
          nowusec=v.it_value.tv_usec;
          if(nowsec==lastsec-1)
          {
              /*每过一秒，产生一个SIGUSR1信号*/
              raise(SIGUSR1);
              lastsec=nowsec;
              countsec++;       /*记录总的秒数*/
          }
  
      }    
}
/*信号处理函数*/
static void sig_handler(int signo)
{
     switch(signo)
     {
           /*接收到的信号是SIGUSR1,使i累加1,然后调用sayHello()*/
           case SIGUSR1:
                i++;
    hello->sayHello();
                break;
            /*定时器定时到达*/
           case SIGALRM:
           {
                girlPixmapLabel->setText("Timer has been zero");
                lastsec=countsec;
                countsec=0;
                break;
           }
     }
}

void MyHelloForm::sayHello()
{
girlPixmapLabel->clear();
girlPixmapLabel->setFrameStyle( QFrame::Panel | QFrame::Sunken );
girlPixmapLabel->setNum(i);
girlPixmapLabel->setAlignment( AlignCenter );
}

void MyHelloForm::showMe()
{
girlPixmapLabel->clear();
girlPixmapLabel->setFrameStyle( QFrame::Panel | QFrame::Sunken );
girlPixmapLabel->setText( "Hello\n\nI am Bad Boy" );
girlPixmapLabel->setAlignment( AlignCenter );    
}

下面是我的loop.h文件：

#ifndef MYHELLOFORM_H
#define MYHELLOFORM_H
#include "loop_base.h"
#include <qpixmap.h>

class MyHelloForm : public HelloBaseForm
{
Q_OBJECT
  public:
  MyHelloForm( QWidget* parent = 0, const char* name = 0, WFlags fl = 0 );
  virtual ~MyHelloForm();
//  const QPixmap *eddy;
private slots:
    void showMe();
     void timer(void);
    void sayHello();
};

#endif // MYHELLOFORM_H