关于焦点的有关问题，

关于焦点的问题，求助啊。。
我做的是一个软件盘
有3条LineEdit

几个1-9的数字键。我按了数字键，焦点跳了，LineEdit显示我输入的值，当我切换到第二条LineEdit。输入的时候，显示还是在第一条LineEdit上。
其实就是没进入函数checkFocus()中的上3个if的选择。
  直接执行了
  else
  ui->ipInfoLineEdit->setFocus();
问题貌似是光标随着我按数字键的时候不在了。请高手指点下
//=========================================



void ipset::checkFocus() //光标定位
{
  //bool ipfocus;
 // bool macfocus;
 // bool gateway;

  if(ui->ipInfoLineEdit->hasFocus())
  {
  //ipfocus = true;
  //macfocus = false;
  //gateway = false;
  showstatic_ip();


  }
  else if(ui->maskInfoLineEdit->hasFocus())
  {
  //ipfocus = false;
  //macfocus = true;
  //gateway = false;
  showmask();

  }
  else if(ui->gatewayInfoLineEdit->hasFocus())
  {
  //ipfocus = false;
  //macfocus = false;
  //gateway = true;
  showgateway();


  }
  else
  ui->ipInfoLineEdit->setFocus();



//=========================================================================

void ipset::showstatic_ip()
{

  qDebug()<<"record"<<record;
  ui->ipInfoLineEdit->setText(ui->ipInfoLineEdit->text()+record);
  ui->ipInfoLineEdit->setFocus();
  record.clear();
}

void ipset::showmask()
{

  ui->maskInfoLineEdit->setText(ui->maskInfoLineEdit->text()+record);
  ui->maskInfoLineEdit->setFocus();
  record.clear();

}

void ipset::showgateway()
{

  ui->gatewayInfoLineEdit->setText(ui->gatewayInfoLineEdit->text()+record);
  ui->gatewayInfoLineEdit->setFocus();
  record.clear();
}


//==========================================================
//软件盘设置


void ipset::on_pushButton_1_clicked()//键1
{
  record= "1" ;
  qDebug()<<"record"<<record;
  checkFocus();

}

void ipset::on_pushButton_2_clicked()//键2
{
  //QString record;
  record="2";
  qDebug()<<"record"<<record;

  checkFocus();
}

void ipset::on_pushButton_3_clicked()//键3
{
  record="3";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_4_clicked()//键4
{
  record="4";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_5_clicked()//键5
{
  record="5";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_6_clicked()//键6
{
  record="6";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_7_clicked()//键7
{
  record="7";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_8_clicked()//键8
{
  record="8";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_9_clicked()//键9
{
  record="9";
  qDebug()<<"record"<<record;
  checkFocus();
}

void ipset::on_pushButton_dian_clicked()//键dian