Linux(Ubuntu) Qt5 Image Display - 리눅스(우분투) Qt5 이미지 디스플레이

리눅스(우분투)에서 Qt5를 이용해 이미지를 디스플레이 해 보자.

 

#include <QApplication>
#include <QWidget>
#include <QPainter>
 
class Picture : public QWidget
{
public:
    Picture(QWidget* parent = 0);
 
protected:
    void paintEvent(QPaintEvent* event);
    // This event handler can be reimplemented in a subclass
    // to receive paint events passed in event.
    void drawPicture(QPainter* qp);
 
private:
    int height;
    int width;
    QImage image;
};
 
Picture::Picture(QWidget* parent) : QWidget(parent)
{
    image.load("Barbara Palvin.png");
    height = image.height();
    width = image.width();
 
    this->resize(width, height);
}
 
void Picture::paintEvent(QPaintEvent* e)
{
    Q_UNUSED(e);
    // Q_UNUSED( name)
    // Indicates to the compiler that the parameter with the
    // specified name is not used in the body of a function.
    // This can be used to suppress compiler warnings while
    // allowing functions to be defined with meaningful
    // parameter names in their signatures.
 
    QPainter qp(this);
    drawPicture(&qp);
}
 
void Picture::drawPicture(QPainter* qp)
{
    qp->drawImage(0, 0, image);
}
 
int main(int argc, char* argv[])
{
    QApplication app(argc, argv);
 
    Picture window;
    window.setWindowTitle("Picture Example");
    //window.resize(width, height);
 
    window.show();
 
    return app.exec();
}

소스를 입력한다. (qt.cpp)

 

컴파일(빌드)하고 실행하면 이미지가 디스플레이된다.