How to store data in QMap & Qlist and retrieve them in QT ?
My requirement is I have Schedule Name which are Monday - Sunday and Schedule Items like "Sunday , 12:00 - 17:30".........
Now I want to have 2 QlistWidget one contains schedule names and other contains Schedule items , now when i select one Schedule name in first listbox corresponding related schedule item gets listed in another listbox.
How can I add items to listwidget using Qmap and Qlist?
How to keep data in memory using it?
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);
In ItemselectionChanged Event :
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);
}
You need something like this to store your data.
//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]);
}