Resize QTableWidget : QTableWidget « Qt « C++

1. C++
2. Qt
3. QTableWidget

Resize QTableWidget

  


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#ifndef WINDOW_H
#define WINDOW_H

#include <QMainWindow>

class QAction;
class QTableWidget;
class QTableWidgetItem;

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow();

public slots:
    void changeHeight();
    void changeWidth();

private:
    void setupTableItems();

    QTableWidget *tableWidget;
};

#endif






#include <QtGui>

#include "mainwindow.h"

MainWindow::MainWindow()
{
    QMenu *fileMenu = new QMenu(tr("&File"));

    QAction *quitAction = fileMenu->addAction(tr("E&xit"));
    quitAction->setShortcut(tr("Ctrl+Q"));

    QMenu *tableMenu = new QMenu(tr("&Table"));

    QAction *tableWidthAction = tableMenu->addAction(tr("Change Table &Width"));
    QAction *tableHeightAction = tableMenu->addAction(tr("Change Table &Height"));

    menuBar()->addMenu(fileMenu);
    menuBar()->addMenu(tableMenu);


    tableWidget = new QTableWidget(this);

    tableWidget->setSelectionMode(QAbstractItemView::ExtendedSelection);

    connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));
    connect(tableWidthAction, SIGNAL(triggered()), this, SLOT(changeWidth()));
    connect(tableHeightAction, SIGNAL(triggered()), this, SLOT(changeHeight()));

    setupTableItems();

    setCentralWidget(tableWidget);
    setWindowTitle(tr("Table Widget Resizing"));
}

void MainWindow::setupTableItems()
{

    tableWidget->setRowCount(10);
    tableWidget->setColumnCount(5);


    for (int row = 0; row < tableWidget->rowCount(); ++row) {
        for (int column = 0; column < tableWidget->columnCount(); ++column) {

    QTableWidgetItem *newItem = new QTableWidgetItem(tr("%1").arg(
        (row+1)*(column+1)));
    tableWidget->setItem(row, column, newItem);

        }
    }
}

void MainWindow::changeWidth()
{
    bool ok;

    int newWidth = QInputDialog::getInteger(this, tr("Change table width"),
        tr("Input the number of columns required (1-20):"),
        tableWidget->columnCount(), 1, 20, 1, &ok);

    if (ok)
        tableWidget->setColumnCount(newWidth);
}

void MainWindow::changeHeight()
{
    bool ok;

    int newHeight = QInputDialog::getInteger(this, tr("Change table height"),
        tr("Input the number of rows required (1-20):"),
        tableWidget->rowCount(), 1, 20, 1, &ok);

    if (ok)
        tableWidget->setRowCount(newHeight);
}






#include <QtGui>

#include "mainwindow.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow *window = new MainWindow;
    window->show();
    return app.exec();
}

   
    
  

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