bsp 오픈플랫폼 과정

#include <QApplication>
#include <QPushButton>

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

    QPushButton hello("Hello world!");
    hello.resize(100, 30);

    hello.show();
    return app.exec();
}

#include <QApplication>
#include <QFont>
#include <QPushButton>

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

    QPushButton quit("Quit");
    quit.resize(75, 30);
    quit.setFont(QFont("Times", 18, QFont::Bold));

    QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit()));

    quit.show();
    return app.exec();
}

#include <QApplication>
#include <QFont>
#include <QPushButton>
#include <QWidget>

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

    QWidget window;
    window.resize(200, 120);

    QPushButton quit("Quit", &window);
    quit.setFont(QFont("Times", 18, QFont::Bold));
    quit.setGeometry(10, 40, 180, 40);
    QObject::connect(&quit, SIGNAL(clicked()), &app, SLOT(quit()));

    window.show();
    return app.exec();
}

#include <QApplication>
#include <QFont>
#include <QPushButton>

class MyWidget : public QWidget
{
public:
    MyWidget(QWidget *parent = 0);
};

MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    setFixedSize(200, 120);

    QPushButton *quit = new QPushButton("Quit", this);
    quit->setGeometry(62, 40, 75, 30);
    quit->setFont(QFont("Times", 18, QFont::Bold));

    connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWidget widget;
    widget.show();
    return app.exec();
}

#include <QApplication>
#include <QFont>
#include <QLCDNumber>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QWidget>

class MyWidget : public QWidget
{
public:
    MyWidget(QWidget *parent = 0);
};

MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    QPushButton *quit = new QPushButton("Quit");
    quit->setFont(QFont("Times", 18, QFont::Bold));

    QLCDNumber *lcd = new QLCDNumber(2);

    QSlider *slider = new QSlider(Qt::Horizontal);
    slider->setRange(0, 99);
    slider->setValue(0);

    connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));
    connect(slider, SIGNAL(valueChanged(int)), lcd, SLOT(display(int)));

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(quit);
    layout->addWidget(lcd);
    layout->addWidget(slider);
    setLayout(layout);
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWidget widget;
    widget.show();
    return app.exec();
}

#include <QApplication>
#include <QFont>
#include <QGridLayout>
#include <QLCDNumber>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QWidget>

class LCDRange : public QWidget
{
public:
    LCDRange(QWidget *parent = 0);
};

LCDRange::LCDRange(QWidget *parent)
    : QWidget(parent)
{
    QLCDNumber *lcd = new QLCDNumber(2);
    QSlider *slider = new QSlider(Qt::Horizontal);
    slider->setRange(0, 99);
    slider->setValue(0);
    connect(slider, SIGNAL(valueChanged(int)), lcd, SLOT(display(int)));

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(lcd);
    layout->addWidget(slider);
    setLayout(layout);
}

class MyWidget : public QWidget
{
public:
    MyWidget(QWidget *parent = 0);
};

MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    QPushButton *quit = new QPushButton("Quit");
    quit->setFont(QFont("Times", 18, QFont::Bold));
    connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));

    QGridLayout *grid = new QGridLayout;
    for (int row = 0; row < 4; ++row) {
    	for (int column = 0; column < 4; ++column) {
    		grid->addWidget(new LCDRange, row, column);
    	}
    }

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(quit);
    layout->addLayout(grid);
    setLayout(layout);
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWidget widget;
    widget.show();
    return app.exec();
}