Qt Compile

Qt Compile (Windows)

>qmake -project

>qmake main.pro

>mingw32-make

예제1) Hello Qt!

#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(); }

예제2) Quit

#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(); }

예제3) QWidget

#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(); }

예제4) MyWidget

#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(); }

예제5) LCD display

#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(); }

예제6) Layout

#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(); }