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

   1  //初始化combox
   2     ui->comboBox->insertItem(0,"山羊座","山羊座1");
   3     ui->comboBox->insertItem(1,"处女座","处女座");
   4     ui->comboBox->insertItem(2,"双鱼座","双鱼座1");
   5     ui->comboBox->insertItem(3,"狮子座","狮子座1");
   6 
   7     this->sl = new QStringList();
   8     this->sl->append("中文数据测试123a");
   9     this->slm=new QStringListModel(this);
  10     this->slm->setStringList(*sl);
  11     ui->listView->setModel(slm);

  click事件

   1 void MainWindow::on_pushButton_clicked()
   2 {
   3     this->sl->clear();
   4 
   5     QString qstr = ui->comboBox->currentText();
   6     ui->lineEdit->setText(qstr);
   7 
   8     qDebug()<<qstr;
   9     //转换为C风格的字符串(字符串严格转换)
  10     const char *psearch = qstr.toStdString().c_str();
  11     qDebug()<<psearch;
  12 
  13     ifstream fin("C:\\nasa.txt");
  14 
  15     if(!fin)
  16     {
  17         qDebug()<<"文件打开失败";
  18         return;
  19     }
  20     else
  21     {
  22         qDebug()<<"文件打开成功";
  23     }
  24 
  25     //用于读取文件
  26     char strall[3001]={0};
  27     //设置读取个数
  28     int read_count=0;
  29     while(!fin.eof())
  30     {
  31        read_count++;
  32 
  33        if(read_count>15000)
  34        {
  35            qDebug()<endl;
  36            break;
  37        }
  38 
  39        //读取
  40        memset(strall,0,sizeof(strall));
  41        fin.getline(strall,3000);
  42 
  43         //设置编码方式,解决乱码问题
  44         QTextCodec *codec = QTextCodec::codecForName("gb2312");
  45         QString qstrall = codec->toUnicode(strall);
  46 
  47         //转化为C风格
  48         const char *pstrall = qstrall.toStdString().c_str();
  49         char *pfind = strstr(pstrall,psearch);
  50 
  51         if(pfind!=NULL)
  52         {
  53             qDebug()<<pstrall;
  54             //添加到列表
  55             sl->append(qstrall);
  56         }
  57      }
  58 
  59     this->slm->setStringList(*sl);
  60     ui->listView->setModel(slm);
  61 }

  comboBox_currentIndexChanged

  1 void MainWindow::on_comboBox_currentIndexChanged(int index)
  2 {
  3     QString qstr = ui->comboBox->currentText();
  4     ui->lineEdit->setText(qstr);
  5 }

   

转载于:https://www.cnblogs.com/xiaochi/p/8744352.html