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Code: Alles auswählen

		QTableWidgetItem *priceTableWidgetItem = new QTableWidgetItem(QString::number(therapy->getPrice(), 'f', 2).append(QString::fromUtf8("¤")));
		priceTableWidgetItem->setData(Qt::UserRole, therapy->getPrice());

Code: Alles auswählen

		QTableWidgetItem *priceTableWidgetItem = new QTableWidgetItem(QString::number(therapy->getPrice(), 'f', 2).append(QString::fromUtf8("¤")));
		priceTableWidgetItem->setData(Qt::DisplayRole, therapy->getPrice());

Code: Alles auswählen

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QtGui>
#include <QtCore>

class MainWindow : public QMainWindow {
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);

public slots:
    void sortUserRole()  { proxy->setSortRole(Qt::UserRole); }
    void sortDisplayRole() { proxy->setSortRole(Qt::DisplayRole); }

private:
    QSortFilterProxyModel * proxy;  //// 1 /////////////////////////////////////////
    QStandardItemModel * model;
    QTableView * view;
};
#endif // MAINWINDOW_H

Code: Alles auswählen

#include "mainwindow.h"
#include <algorithm>

MainWindow::MainWindow(QWidget *parent)    : QMainWindow(parent){
    // amount of items
    const int COUNT=3000;

    // create view
    view  = new QTableView;
    view->setSortingEnabled(true);  //// 0 ( you need to set this anyway) /////////////////////////////////////////

    // create model
    model = new QStandardItemModel;
    model->setRowCount(COUNT);
    model->setColumnCount(1);

    // create filter/sort proxy
    proxy = new QSortFilterProxyModel;   //// 2 /////////////////////////////////////////

    // randomize prices
    srand(time(0));

    // some values
    QVector<double> ms;
    ms.reserve(COUNT);

    // create prices
    for (int i=0; i < COUNT; ++i)
    {
        ms.push_back( rand()%100000 / 1000.0 );
    }
    // randomize further by shuffling 
    std::random_shuffle(ms.begin(),ms.end());

    // create items
    for(int rowNr=0; rowNr<COUNT; rowNr++)
    {
        // one row
        QStandardItem *sub = new QStandardItem;
        // display role value (qstring !!)
        sub->setData(QVariant(QString::number(ms.back(),' ',2)+QString::fromUtf8(" ¤")), Qt::DisplayRole);
        // user role value (double !!)
        sub->setData(QVariant(ms.back()),Qt::UserRole);

        // insert it
        model->setItem(rowNr,0,sub);
        // remove value from vector
        ms.pop_back();
    }

    // use standard model als model for proxy
    proxy->setSourceModel(model);                          //// 3 /////////////////////////////////////////
    proxy->setSortRole(Qt::DisplayRole);                 //// still 3 (thats the default, just uttering it for your convenience) /////////////////////////////////////////

    // use proxy as model for view
    view->setModel(proxy);                                    //// still 3 (you need to set one datasource anyway)

    // sort buttons
    QPushButton * pb1 =  new QPushButton("Sort after Qt::DisplayRole");
    connect(pb1,SIGNAL(clicked()),this,SLOT(sortDisplayRole()));

    QPushButton * pb2 =  new QPushButton("Sort after Qt::UserRole");
    connect(pb2,SIGNAL(clicked()),this,SLOT(sortUserRole()));

    QWidget * w = new QWidget;
    QVBoxLayout * l = new QVBoxLayout(w);
    l->addWidget(pb1);
    l->addWidget(pb2);
    l->addWidget(view);

    setCentralWidget(w);
}