Question

如何在QMap中存储数据＆amp; QT中的Qlist和Reterivethem？

我的要求是我有星期一至星期日的时间表名称和“星期日，12：00-17：30”的时间表项目.........

现在我想拥有2个QlistWidget，一个包含计划名称，其他包含计划项目，现在当我在第一个列表框中选择一个计划名称时，相应的计划项目会列在另一个列表框中。

如何使用Qmap和Qlist向listwidget添加项目？如何使用它保持数据内存？

  QList<QString> ScheduleItemslist;
     ScheduleItemslist << "Saturday,09:00- 17:30" << "Sunday,10:00- 12:00" << "Sunday,01:30- 17:30" ;

 QList<QString> ScheduleItemslst;
  ScheduleItemslst << "Monday,09:00- 17:30" << "Tuesday,10:00- 12:00" << "Wednesday,01:30- 17:30" ;


QMap<QString,QList<QString> > map;
map["Weekend Plus"] = ScheduleItemslist ;
map["All"] = ScheduleItemslst ;

foreach (QString key, map.keys())
{
    ui->listWidgetTimeSet->addItem (key) ;
}


ui->listWidgetTime->addItems(ScheduleItemslist);

在ItemselectionChanged事件中：

QList<QString> ScheduleItemslist;
     ScheduleItemslist << "Saturday,09:00- 17:30" << "Sunday,10:00- 12:00" << "Sunday,01:30- 17:30" ;

  QList<QString> ScheduleItemslst;
    ScheduleItemslst << "Monday,09:00- 17:30" << "Tuesday,10:00- 12:00" << "Wednesday,01:30- 17:30" ;

if(ui->listWidgetTimeSet->currentItem()->text() == "Weekend Plus")
{
    ui->listWidgetTime->addItems(ScheduleItemslist);
}
else if (ui->listWidgetTimeSet->currentItem()->text() == "All")
{
    ui->listWidgetTime->addItems(ScheduleItemslst);
}

Answer 1

您需要这样的东西来存储您的数据。

//Declare your map
QMap <QString, QList <QString> > map;

//Populate your map in a function
void populateMap ()
{

    QList<QString> sundaylist;
    sundaylist<< "Sunday , 12:00 - 17:30" << "Sunday , 18:00 - 20:30";
    map ["Sunday"] = sundaylist;

    QList<QString> mondaylist;
    mondaylist<< "Monday , 12:00 - 17:30" << "Monday , 18:00 - 20:30";
    map ["Monday"] = mondaylist        
}

//Populate list1 with keys in your map
void populateList1 ()
{
    list1.addItems (map.keys ());
}

//This is your slot connected to currentItemChanged  signal of list1
void list1CurrentItemChanged ( QListWidgetItem * current, QListWidgetItem * previous ) 
{
    list2.clear ();
    QString key = current->text ();
    list2.addItems (map [key]);

}

如何在QMap中存储数据＆amp; QT中的Qlist？

1 个答案: