Qt: QTableView Tutorial I

I am interesting with QTableView. I try to search QTableView tutorial, but difficult to get this tutorial. So, I try to create basic QTableView Tutorial. This is output from my first QTableView Tutorial:

First, copy this text and save as main.cpp.

#include <QApplication>
#include "tableview.h"

int main( int argc, char **argv )
{
    QApplication app( argc, argv );

    tableView tbl;
    tbl.show();

    return app.exec();
}

Second, create tableview class to show QTableView in our program. Copy this text and save as tableview.cpp

#include "tableview.h"

tableView::tableView(QWidget *parent)
    : QWidget(parent)
{
    //create layout
    QVBoxLayout *mainLayout = new QVBoxLayout();
    QHBoxLayout *horLayout1 = new QHBoxLayout;
    QHBoxLayout *horLayout2 = new QHBoxLayout;

    //create input number of row
    label1 = new QLabel(tr("row : "));
    lineeRow = new QLineEdit();
    horLayout1->addWidget(label1);
    horLayout1->addWidget(lineeRow);

    //create input number of column
    label2 = new QLabel(tr("Column : "));
    lineeCol = new QLineEdit();
    horLayout2->addWidget(label2);
    horLayout2->addWidget(lineeCol);

    lineeRow->setText("4");
    lineeCol->setText("2");
    btnApply = new QPushButton(tr("Apply"));
    connect(btnApply, SIGNAL(clicked()), this, SLOT(btnApply_clicked()));

    //create QTableView
    tblv = new QTableView();
    tblv->setSelectionBehavior(QAbstractItemView::SelectItems );
    tblv->setSelectionMode( QAbstractItemView::ExtendedSelection );

    //setting layout
    mainLayout->addLayout(horLayout1);
    mainLayout->addLayout(horLayout2);
    mainLayout->addWidget(btnApply);
    mainLayout->addWidget(tblv);
    setLayout(mainLayout);

}

void tableView::btnApply_clicked()
{
    //get number of input row and column
    nrow = lineeRow->text().toInt();
    ncol = lineeCol->text().toInt();

    //create model
    QStandardItemModel *model = new QStandardItemModel( nrow, ncol, this );

    //create QTableview Horizontal Header
    for (int r=0; r<ncol; r++)
        model->setHorizontalHeaderItem( r, new QStandardItem( QString("Column_ %0" ).arg(r)) );

    //fill model value
    for( int r=0; r<nrow; r++ )
    {
        for( int c=0; c<ncol; c++)
        {
            QString sstr = "[ " + QString::number(r) + " , " + QString::number(c) + " ]";
            QStandardItem *item = new QStandardItem(QString("Idx ") + sstr);
            model->setItem(r, c, item);
        }
    }

    //set model
    tblv->setModel(model);
}

Third, create tableview header. Copy this text and save as tableview.h

#ifndef TABLEVIEW_H
#define TABLEVIEW_H

#include <QtGui>
#include <QWidget>
#include <QTableView>
#include <QStandardItemModel>
#include <QStandardItem>
#include <QString>

class tableView : public QWidget
{
    Q_OBJECT
public:
    tableView(QWidget *parent = 0);

private:
    QTableView *tblv;
    QLabel *label1, *label2;
    QLineEdit *lineeRow, *lineeCol;
    QPushButton *btnApply;
    int nrow, ncol;

private slots:
    void btnApply_clicked();
};

#endif // TABLEVIEW_H

Create pro file, copy this text as tblview1.pro

SOURCES += tableview.cpp \
    main.cpp
HEADERS += tableview.h

Compile program with command qmake and make. You can download  this QTableview tutorial source code at here.

totosugito

Hi, This is my notes when I try something. Maybe, this is NOT THE BEST SOLUTION for your problems. If you have other method or idea that better with my post, please share in this blog. Thank for visiting my site.

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