qtforum.de

Code: Alles auswählen

#include <qpushbutton.h>
#include <qlineedit.h>
#include <qlayout.h>
#include <qpopupmenu.h>
#include <qmenubar.h>
#include <qlabel.h>

#include "test.h"

TestWidget::TestWidget(QWidget* parent, const char* name)
  : QWidget(parent, name)
{
    QLayout* layout = new QVBoxLayout(this);

    QPopupMenu *fileMenu = new QPopupMenu(this);
    fileMenu->insertItem( "Neu" );
    fileMenu->insertItem( "Oeffnen");
    fileMenu->insertSeparator();
    fileMenu->insertItem( "&Beenden", this, SLOT(close()));

    QMenuBar *mainMenu = new QMenuBar(this);
    mainMenu->insertItem( "&Datei",fileMenu );

    QLabel *label = new QLabel(this);
    label->setText("alter text");
    label->setGeometry(0, 120, 200, 50);
    label->setAlignment(Qt::AlignCenter);
    label->setFont(QFont("Arial", 20, QFont::Bold));

    QLineEdit* lineEdit = new QLineEdit(this);
    QPushButton* button = new QPushButton("Hier klicken", this);

    layout->add(lineEdit);
    layout->add(button);
    layout->add(label);

    QObject::connect(button, SIGNAL(clicked()), label, SLOT(changeLabel)); 
}

void TestWidget::changeLabel()
{
    label->setText("neuer text");
}

Code: Alles auswählen

#ifndef QTTUTWIDGET_H
#define QTTUTWIDGET_H

#include <qwidget.h>

class TestWidget : public QWidget
{
    Q_OBJECT
public:
    TestWidget(QWidget* parent=0, const char* name=0);

protected slots:

protected:
};

#endif

Code: Alles auswählen

#include <qapplication.h>

#include "test.h"

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

    TestWidget tutwidget( 0 );
    tutwidget.resize( 300,300 );

    app.setMainWidget( &tutwidget );

    tutwidget.show();

    return app.exec();
}