6.图形化列表查询显示

• UI
• 
• 关键代码 mainwindow.h

  1 QStringListModel *slm;
  2 QStringList *sl;

  mainwindow.cpp    init初始化

   //初始化combox
      ui->comboBox->insertItem(0,"山羊座","山羊座1");
      ui->comboBox->insertItem(1,"处女座","处女座");
      ui->comboBox->insertItem(2,"双鱼座","双鱼座1");
      ui->comboBox->insertItem(3,"狮子座","狮子座1");
  
      this->sl = new QStringList();
      this->sl->append("中文数据测试123a");
      this->slm=new QStringListModel(this);
      this->slm->setStringList(*sl);
      ui->listView->setModel(slm);

  click事件

  void MainWindow::on_pushButton_clicked()
  {
      this->sl->clear();
  
      QString qstr = ui->comboBox->currentText();
      ui->lineEdit->setText(qstr);
  
      qDebug()<<qstr;
      //转换为C风格的字符串(字符串严格转换)
      const char *psearch = qstr.toStdString().c_str();
      qDebug()<<psearch;
  
      ifstream fin("C:\nasa.txt");
  
      if(!fin)
      {
          qDebug()<<"文件打开失败";
          return;
      }
      else
      {
          qDebug()<<"文件打开成功";
      }
  
      //用于读取文件
      char strall[3001]={0};
      //设置读取个数
      int read_count=0;
      while(!fin.eof())
      {
         read_count++;
  
         if(read_count>15000)
         {
             qDebug()<<strall<<endl;
             break;
         }
  
         //读取
         memset(strall,0,sizeof(strall));
         fin.getline(strall,3000);
  
          //设置编码方式,解决乱码问题
          QTextCodec *codec = QTextCodec::codecForName("gb2312");
          QString qstrall = codec->toUnicode(strall);
  
          //转化为C风格
          const char *pstrall = qstrall.toStdString().c_str();
          char *pfind = strstr(pstrall,psearch);
  
          if(pfind!=NULL)
          {
              qDebug()<<pstrall;
              //添加到列表
              sl->append(qstrall);
          }
       }
  
      this->slm->setStringList(*sl);
      ui->listView->setModel(slm);
  }

  comboBox_currentIndexChanged

  void MainWindow::on_comboBox_currentIndexChanged(int index)
  {
      QString qstr = ui->comboBox->currentText();
      ui->lineEdit->setText(qstr);
  }