proggen.org

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#include <QTGui>
#include <string.h>

int main (int argc, char *argv[])
{
    QApplication app(argc, argv);
    QWidget *Window = new QWidget(0);
    Window->setWindowTitle("Ein kleiner Rechner zum ausprobieren :D");

    QVBoxLayout *inner = new QVBoxLayout(Window);
    QHBoxLayout *down = new QHBoxLayout(Window);
    QHBoxLayout *middle = new QHBoxLayout(Window);
    QHBoxLayout *up = new QHBoxLayout(Window);

    QLineEdit *left = new QLineEdit(Window);
    QLineEdit *mid = new QLineEdit(Window);
    QLineEdit *right = new QLineEdit(Window);
    QLabel *is = new QLabel(Window);

    QPushButton *plus = new QPushButton(Window);
    QPushButton *minus = new QPushButton(Window);
    QPushButton *multi = new QPushButton(Window);
    QPushButton *divi = new QPushButton(Window);

    plus->setText("ADDIEREN");
    minus->setText("SUBTRAHIEREN");
    multi->setText("MULTIPLIZIEREN");
    divi->setText("DIVIDIEREN");
    is->setText(" = ");

    up->addWidget(left);
    up->addWidget(mid);
    up->addWidget(is);
    up->addWidget(right);
    middle->addWidget(plus);
    middle->addWidget(minus);
    down->addWidget(multi);
    down->addWidget(divi);

    inner->addLayout(up);
    inner->addLayout(middle);
    inner->addLayout(down);

    Window->setLayout(inner);

    QObject::connect(plus,SIGNAL(clicked()),right, SLOT(setText(plus(left->text,middle->text))));

    Window->show();
    return app.exec();
}

int plus (int a, int b)
{
    QPushButton *push = new QPushButton(0);
    push->show();

    int c;
    c=a+b;
    return c;
}

Code: Alles auswählen

~MeineKlasse();