1 void Widget::on_comboBox_currentIndexChanged(int index)

 2 {

 3     QString sortname;

 4     switch(index){

 5         case 1:  sortname="每日一题";   break;

 6         case 2:  sortname="栈";        break;

 7         default: break;

 8     }

 9     if(sortname=="")

10         return;

11     QDir dir;

12     dir.setPath(curPath);

13     if (!dir.exists()){

14         ui->textBrowser_3->clear();

15         ui->textBrowser_3->setText("dir error...");

16         ui->textBrowser_3->show();

17         return;

18     }

19     QList<QString> queue;

20     queList.clear();

21     queue.push_back(dir.path());

22     while(!queue.empty()){

23         dir.setPath(queue.front());

24         queue.pop_front();

25         dir.setFilter(QDir::Dirs|QDir::NoSymLinks|QDir::NoDotAndDotDot);

26         QFileInfoList list = dir.entryInfoList();

27         for(int i=0; i<list.size(); ++i){

28             QFileInfo fileinfo = list[i];

29             if(fileinfo.fileName()==sortname){

30                 dir.setPath(fileinfo.filePath());

31                 dir.setFilter(QDir::Files|QDir::NoSymLinks|QDir::NoDotAndDotDot);

32                 list = dir.entryInfoList();

33                 for(int j=0; j<list.size(); ++j){

34                     fileinfo = list[j];

35                     queList.push_back(fileinfo.filePath());

36                 }

37                 goto FINDOK;

38             }

39             else

40                 queue.push_back(fileinfo.filePath());

41         }

42     }

43     return;

44     FINDOK:

45     Showquelist();

46     Showque();

47 }