C++/Qt/QSpinBox

Содержание

1 Add value change signal for Spin box
2 Horizontal Spin box
3 Ser range for Spin box
4 Set value to Spin box
5 Spin box

Add value change signal for Spin box

  

#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *window = new QWidget;
    window->setWindowTitle("Enter Your Age");
    QSpinBox *spinBox = new QSpinBox;
    QSlider *slider = new QSlider(Qt::Horizontal);
    spinBox->setRange(0, 130);
    slider->setRange(0, 130);
    QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
    spinBox->setValue(35);
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    window->setLayout(layout);
    window->show();
    return app.exec();
}

Horizontal Spin box

  
#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *window = new QWidget;
    window->setWindowTitle("Enter Your Age");
    QSpinBox *spinBox = new QSpinBox;
    QSlider *slider = new QSlider(Qt::Horizontal);
    spinBox->setRange(0, 130);
    slider->setRange(0, 130);
    QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
    spinBox->setValue(35);
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    window->setLayout(layout);
    window->show();
    return app.exec();
}

Ser range for Spin box

  
#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *window = new QWidget;
    window->setWindowTitle("Enter Your Age");
    QSpinBox *spinBox = new QSpinBox;
    QSlider *slider = new QSlider(Qt::Horizontal);
    spinBox->setRange(0, 130);
    slider->setRange(0, 130);
    QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
    spinBox->setValue(35);
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    window->setLayout(layout);
    window->show();
    return app.exec();
}

Set value to Spin box

  
#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *window = new QWidget;
    window->setWindowTitle("Enter Your Age");
    QSpinBox *spinBox = new QSpinBox;
    QSlider *slider = new QSlider(Qt::Horizontal);
    spinBox->setRange(0, 130);
    slider->setRange(0, 130);
    QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
    spinBox->setValue(35);
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBox);
    layout->addWidget(slider);
    window->setLayout(layout);
    window->show();
    return app.exec();
}

Spin box

  
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef WINDOW_H
#define WINDOW_H
#include <QWidget>
QT_BEGIN_NAMESPACE
class QDateTimeEdit;
class QDoubleSpinBox;
class QGroupBox;
class QLabel;
QT_END_NAMESPACE

class Window : public QWidget
{
    Q_OBJECT
public:
    Window();
public slots:
    void changePrecision(int decimals);
    void setFormatString(const QString &formatString);
private:
    void createSpinBoxes();
    void createDateTimeEdits();
    void createDoubleSpinBoxes();
    QDateTimeEdit *meetingEdit;
    QDoubleSpinBox *doubleSpinBox;
    QDoubleSpinBox *priceSpinBox;
    QDoubleSpinBox *scaleSpinBox;
    QGroupBox *spinBoxesGroup;
    QGroupBox *editsGroup;
    QGroupBox *doubleSpinBoxesGroup;
    QLabel *meetingLabel;
};

#endif


#include <QtGui>
#include "window.h"

Window::Window()
{
    createSpinBoxes();
    createDateTimeEdits();
    createDoubleSpinBoxes();
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinBoxesGroup);
    layout->addWidget(editsGroup);
    layout->addWidget(doubleSpinBoxesGroup);
    setLayout(layout);
    setWindowTitle(tr("Spin Boxes"));
}

void Window::createSpinBoxes()
{
    spinBoxesGroup = new QGroupBox(tr("Spinboxes"));
    QLabel *integerLabel = new QLabel(tr("Enter a value between "
        "%1 and %2:").arg(-20).arg(20));
    QSpinBox *integerSpinBox = new QSpinBox;
    integerSpinBox->setRange(-20, 20);
    integerSpinBox->setSingleStep(1);
    integerSpinBox->setValue(0);

    QLabel *zoomLabel = new QLabel(tr("Enter a zoom value between "
        "%1 and %2:").arg(0).arg(1000));
    QSpinBox *zoomSpinBox = new QSpinBox;
    zoomSpinBox->setRange(0, 1000);
    zoomSpinBox->setSingleStep(10);
    zoomSpinBox->setSuffix("%");
    zoomSpinBox->setSpecialValueText(tr("Automatic"));
    zoomSpinBox->setValue(100);
 

    QLabel *priceLabel = new QLabel(tr("Enter a price between "
        "%1 and %2:").arg(0).arg(999));
    QSpinBox *priceSpinBox = new QSpinBox;
    priceSpinBox->setRange(0, 999);
    priceSpinBox->setSingleStep(1);
    priceSpinBox->setPrefix("$");
    priceSpinBox->setValue(99);
 
    QVBoxLayout *spinBoxLayout = new QVBoxLayout;
    spinBoxLayout->addWidget(integerLabel);
    spinBoxLayout->addWidget(integerSpinBox);
    spinBoxLayout->addWidget(zoomLabel);
    spinBoxLayout->addWidget(zoomSpinBox);
    spinBoxLayout->addWidget(priceLabel);
    spinBoxLayout->addWidget(priceSpinBox);
    spinBoxesGroup->setLayout(spinBoxLayout);
}

void Window::createDateTimeEdits()
{
    editsGroup = new QGroupBox(tr("Date and time spin boxes"));
    QLabel *dateLabel = new QLabel;
    QDateEdit *dateEdit = new QDateEdit(QDate::currentDate());
    dateEdit->setDateRange(QDate(2005, 1, 1), QDate(2010, 12, 31));
    dateLabel->setText(tr("Appointment date (between %0 and %1):")
                       .arg(dateEdit->minimumDate().toString(Qt::ISODate))
                       .arg(dateEdit->maximumDate().toString(Qt::ISODate)));

    QLabel *timeLabel = new QLabel;
    QTimeEdit *timeEdit = new QTimeEdit(QTime::currentTime());
    timeEdit->setTimeRange(QTime(9, 0, 0, 0), QTime(16, 30, 0, 0));
    timeLabel->setText(tr("Appointment time (between %0 and %1):")
                       .arg(timeEdit->minimumTime().toString(Qt::ISODate))
                       .arg(timeEdit->maximumTime().toString(Qt::ISODate)));

    meetingLabel = new QLabel;
    meetingEdit = new QDateTimeEdit(QDateTime::currentDateTime());

    QLabel *formatLabel = new QLabel(tr("Format string for the meeting date "
                                        "and time:"));
    QComboBox *formatComboBox = new QComboBox;
    formatComboBox->addItem("yyyy-MM-dd hh:mm:ss (zzz "ms")");
    formatComboBox->addItem("hh:mm:ss MM/dd/yyyy");
    formatComboBox->addItem("hh:mm:ss dd/MM/yyyy");
    formatComboBox->addItem("hh:mm:ss");
    formatComboBox->addItem("hh:mm ap");
 
    connect(formatComboBox, SIGNAL(activated(const QString &)),
            this, SLOT(setFormatString(const QString &)));

    setFormatString(formatComboBox->currentText());

    QVBoxLayout *editsLayout = new QVBoxLayout;
    editsLayout->addWidget(dateLabel);
    editsLayout->addWidget(dateEdit);
    editsLayout->addWidget(timeLabel);
    editsLayout->addWidget(timeEdit);
    editsLayout->addWidget(meetingLabel);
    editsLayout->addWidget(meetingEdit);
    editsLayout->addWidget(formatLabel);
    editsLayout->addWidget(formatComboBox);
    editsGroup->setLayout(editsLayout);
}

void Window::setFormatString(const QString &formatString)
{
    meetingEdit->setDisplayFormat(formatString);
 
    if (meetingEdit->displayedSections() & QDateTimeEdit::DateSections_Mask) {
        meetingEdit->setDateRange(QDate(2004, 11, 1), QDate(2005, 11, 30));
        meetingLabel->setText(tr("Meeting date (between %0 and %1):")
            .arg(meetingEdit->minimumDate().toString(Qt::ISODate))
      .arg(meetingEdit->maximumDate().toString(Qt::ISODate)));
    } else {
        meetingEdit->setTimeRange(QTime(0, 7, 20, 0), QTime(21, 0, 0, 0));
        meetingLabel->setText(tr("Meeting time (between %0 and %1):")
            .arg(meetingEdit->minimumTime().toString(Qt::ISODate))
      .arg(meetingEdit->maximumTime().toString(Qt::ISODate)));
    }
}

void Window::createDoubleSpinBoxes()
{
    doubleSpinBoxesGroup = new QGroupBox(tr("Double precision spinboxes"));
    QLabel *precisionLabel = new QLabel(tr("Number of decimal places "
                                           "to show:"));
    QSpinBox *precisionSpinBox = new QSpinBox;
    precisionSpinBox->setRange(0, 100);
    precisionSpinBox->setValue(2);

    QLabel *doubleLabel = new QLabel(tr("Enter a value between "
        "%1 and %2:").arg(-20).arg(20));
    doubleSpinBox = new QDoubleSpinBox;
    doubleSpinBox->setRange(-20.0, 20.0);
    doubleSpinBox->setSingleStep(1.0);
    doubleSpinBox->setValue(0.0);

    QLabel *scaleLabel = new QLabel(tr("Enter a scale factor between "
        "%1 and %2:").arg(0).arg(1000.0));
    scaleSpinBox = new QDoubleSpinBox;
    scaleSpinBox->setRange(0.0, 1000.0);
    scaleSpinBox->setSingleStep(10.0);
    scaleSpinBox->setSuffix("%");
    scaleSpinBox->setSpecialValueText(tr("No scaling"));
    scaleSpinBox->setValue(100.0);

    QLabel *priceLabel = new QLabel(tr("Enter a price between "
        "%1 and %2:").arg(0).arg(1000));
    priceSpinBox = new QDoubleSpinBox;
    priceSpinBox->setRange(0.0, 1000.0);
    priceSpinBox->setSingleStep(1.0);
    priceSpinBox->setPrefix("$");
    priceSpinBox->setValue(99.99);
    connect(precisionSpinBox, SIGNAL(valueChanged(int)),
            this, SLOT(changePrecision(int)));

    QVBoxLayout *spinBoxLayout = new QVBoxLayout;
    spinBoxLayout->addWidget(precisionLabel);
    spinBoxLayout->addWidget(precisionSpinBox);
    spinBoxLayout->addWidget(doubleLabel);
    spinBoxLayout->addWidget(doubleSpinBox);
    spinBoxLayout->addWidget(scaleLabel);
    spinBoxLayout->addWidget(scaleSpinBox);
    spinBoxLayout->addWidget(priceLabel);
    spinBoxLayout->addWidget(priceSpinBox);
    doubleSpinBoxesGroup->setLayout(spinBoxLayout);
}

void Window::changePrecision(int decimals)
{
    doubleSpinBox->setDecimals(decimals);
    scaleSpinBox->setDecimals(decimals);
    priceSpinBox->setDecimals(decimals);
}




#include <QApplication>
#include "window.h"
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Window window;
    window.show();
    return app.exec();
}

C++/Qt/QSpinBox

Содержание

Add value change signal for Spin box

Horizontal Spin box

Ser range for Spin box

Set value to Spin box

Spin box

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