[Qt-interest] GUI, Qt, Sorting, QTableWidget, NO sorting even after setSortingEnabled()

[Mandaya Prakash]

Thank you Irfan Omair Your trick works great though I dont wanted to
subclass it but I thik it is small enough and I can bear it.

BR,
Prakash

On Wed, Aug 4, 2010 at 11:49 AM, Irfan Omair <irfan.omair.qt at gmail.com>wrote:

> I dont see any other direct way of doing that other than
> reimplementing operator< in the subclass.
>
> By the way only few lines of code will do the trick.
>
>     bool myListItem ::operator< ( const QTableWidgetItem &other ) const
>     {
>         if( this->text().toInt() < other.text().toInt() )
>             return true;
>         else
>             return false;
>     }
>
> See detail example below.
>
> #include <QtGui>
>
> class myListItem: public QObject, public QTableWidgetItem
> {
>     Q_OBJECT
> public:
>     bool myListItem ::operator< ( const QTableWidgetItem &other ) const
>     {
>         if( this->text().toInt() < other.text().toInt() )
>             return true;
>         else
>             return false;
>     }
> };
>
> class MainWindow : public QMainWindow
> {
>
> public:
>    MainWindow(QWidget *parent = 0)
>        : QMainWindow(parent)
>    {
>        QWidget *w = new QWidget;
>        setCentralWidget(w);
>        QVBoxLayout *layout = new QVBoxLayout(w);
>        QTableWidget *list = new QTableWidget(2,1);
>            myListItem *item = new myListItem;
>            item->setText(QString("%1").arg(10));
>            list->setItem(0,0,item);
>            item = new myListItem;
>            item->setText(QString("%1").arg(15));
>            list->setItem(1,0,item);
>
>        list->setSortingEnabled(true);
>        layout->addWidget(list);
>    }
> };
>
> #include "main.moc"
>
> int main(int argc,char *argv[])
> {
>    QApplication app(argc,argv);
>    MainWindow mainWindow;
>    mainWindow.show();
>    return app.exec();
> }
>
> Hope this helps
>
> Regards,
>
> Irfan Omair
>
> Qt Developer
>
>   On Wed, Aug 4, 2010 at 11:19 AM, Mandaya Prakash <
> mandaya.prakash at gmail.com> wrote:
>
>>
>> Hi All,
>>
>> My company has now started usin Qt and I am having some probelm with
>> QTableWidget sorting.
>>
>> I have a QTableWidget. And I fill it with some QTableWidgetItem, initiated
>> by simple QString,
>> actually, just a number like 1,2,10, etc. The problem is that when I set
>> tableWidget->setSortingEnabled(true); and then sort by this column, the
>> order is 1,10,2..., looks like it's compared as string.
>> I don't want to change the code a lot (e.g., creating a customized
>> sub-class) to make it sort correctly. So is there any option of the
>> table/item that I can just set to make it work?
>> Thank you in advance
>>
>> BR
>>
>> Prakash.
>>
>> _______________________________________________
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>> Qt-interest at trolltech.com
>> http://lists.trolltech.com/mailman/listinfo/qt-interest
>>
>>
>
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