How to create alarm list in Qt

This code example shows shows how I created a basic layout for listing and enabling alarms (note that the actual alarm code is not included). The examples lays out a number of QWidgets in a MainWindow application, including QLabel, QCheckBox, and QTimeEdit.

Also I have connected the QCheckBox with the QTimeEdit using signal and slot mechanism.

Prerequisite

• Before you read this article go to this link and read this article : How to create your first Qt application.
• Download and install the Nokia Qt SDK

Header file

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
 
#include <QMainWindow>
 
namespace Ui {
    class MainWindow;
}
 
class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
 
protected:
    void changeEvent(QEvent *e);
 
private:
    Ui::MainWindow *ui;
};
 
#endif // MAINWINDOW_H

Source file

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}
 
MainWindow::~MainWindow()
{
    delete ui;
}
 
void MainWindow::changeEvent(QEvent *e)
{
    QMainWindow::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

ui_mainwindow.cpp

#ifndef UI_MAINWINDOW_H
#define UI_MAINWINDOW_H
 
#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QCheckBox>
#include <QtGui/QGroupBox>
#include <QtGui/QHeaderView>
#include <QtGui/QLabel>
#include <QtGui/QMainWindow>
#include <QtGui/QMenuBar>
#include <QtGui/QStatusBar>
#include <QtGui/QTimeEdit>
#include <QtGui/QToolBar>
#include <QtGui/QWidget>
 
QT_BEGIN_NAMESPACE
 
class Ui_MainWindow
{
public:
    QWidget *centralWidget;
    QGroupBox *groupBox;
    QLabel *label;
    QLabel *label_2;
    QLabel *label_3;
    QCheckBox *checkBox;
    QCheckBox *checkBox_2;
    QCheckBox *checkBox_3;
    QTimeEdit *timeEdit;
    QTimeEdit *timeEdit_2;
    QTimeEdit *timeEdit_3;
    QMenuBar *menuBar;
    QToolBar *mainToolBar;
    QStatusBar *statusBar;
 
    void setupUi(QMainWindow *MainWindow)
    {
        if (MainWindow->objectName().isEmpty())
            MainWindow->setObjectName(QString::fromUtf8("MainWindow"));
        MainWindow->resize(600, 400);
        centralWidget = new QWidget(MainWindow);
        centralWidget->setObjectName(QString::fromUtf8("centralWidget"));
        groupBox = new QGroupBox(centralWidget);
        groupBox->setObjectName(QString::fromUtf8("groupBox"));
        groupBox->setGeometry(QRect(10, 20, 261, 251));
        label = new QLabel(groupBox);
        label->setObjectName(QString::fromUtf8("label"));
        label->setGeometry(QRect(20, 40, 46, 13));
        label_2 = new QLabel(groupBox);
        label_2->setObjectName(QString::fromUtf8("label_2"));
        label_2->setGeometry(QRect(20, 100, 46, 13));
        label_3 = new QLabel(groupBox);
        label_3->setObjectName(QString::fromUtf8("label_3"));
        label_3->setGeometry(QRect(20, 170, 46, 13));
        checkBox = new QCheckBox(groupBox);
        checkBox->setObjectName(QString::fromUtf8("checkBox"));
        checkBox->setGeometry(QRect(80, 40, 70, 17));
        checkBox_2 = new QCheckBox(groupBox);
        checkBox_2->setObjectName(QString::fromUtf8("checkBox_2"));
        checkBox_2->setGeometry(QRect(80, 100, 70, 17));
        checkBox_3 = new QCheckBox(groupBox);
        checkBox_3->setObjectName(QString::fromUtf8("checkBox_3"));
        checkBox_3->setGeometry(QRect(80, 170, 70, 17));
        timeEdit = new QTimeEdit(groupBox);
        timeEdit->setObjectName(QString::fromUtf8("timeEdit"));
        timeEdit->setGeometry(QRect(130, 40, 118, 22));
        timeEdit_2 = new QTimeEdit(groupBox);
        timeEdit_2->setObjectName(QString::fromUtf8("timeEdit_2"));
        timeEdit_2->setGeometry(QRect(130, 100, 118, 22));
        timeEdit_3 = new QTimeEdit(groupBox);
        timeEdit_3->setObjectName(QString::fromUtf8("timeEdit_3"));
        timeEdit_3->setGeometry(QRect(130, 160, 118, 22));
        MainWindow->setCentralWidget(centralWidget);
        menuBar = new QMenuBar(MainWindow);
        menuBar->setObjectName(QString::fromUtf8("menuBar"));
        menuBar->setGeometry(QRect(0, 0, 600, 20));
        MainWindow->setMenuBar(menuBar);
        mainToolBar = new QToolBar(MainWindow);
        mainToolBar->setObjectName(QString::fromUtf8("mainToolBar"));
        MainWindow->addToolBar(Qt::TopToolBarArea, mainToolBar);
        statusBar = new QStatusBar(MainWindow);
        statusBar->setObjectName(QString::fromUtf8("statusBar"));
        MainWindow->setStatusBar(statusBar);
 
        retranslateUi(MainWindow);
 
        QMetaObject::connectSlotsByName(MainWindow);
    } // setupUi
 
    void retranslateUi(QMainWindow *MainWindow)
    {
        MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", 0, QApplication::UnicodeUTF8));
        groupBox->setTitle(QApplication::translate("MainWindow", "Alarm List", 0, QApplication::UnicodeUTF8));
        label->setText(QApplication::translate("MainWindow", "Alarm 1", 0, QApplication::UnicodeUTF8));
        label_2->setText(QApplication::translate("MainWindow", "Alarm 2", 0, QApplication::UnicodeUTF8));
        label_3->setText(QApplication::translate("MainWindow", "Alarm 2", 0, QApplication::UnicodeUTF8));
        checkBox->setText(QString());
        checkBox_2->setText(QString());
        checkBox_3->setText(QString());
    } // retranslateUi
 
};
 
namespace Ui {
    class MainWindow: public Ui_MainWindow {};
} // namespace Ui
 
QT_END_NAMESPACE
 
#endif // UI_MAINWINDOW_H

output window

This code snippet will reflect the output given below.When QCheckBox is ticked at that time time available for editing.

Source code

The full source code presented in this article is available here File:Alarmlist.zip

Further Information

• Understanding signal and slot in Qt

--rahulvala 06:34, 6 April 2010 (UTC)