How to hide a QPushButton in a QToolBar?

[Calivernon]

Hello,

I am trying to hide a QPushButton but it does not work.
Here is the part of my code with the very basic for this purpose, pressing button1 should hide button2...

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
class QToolBar;
class QPushButton;

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);

private:
    QToolBar*       m_toolBar;
    QPushButton*    m_button1;
    QPushButton*    m_button2;

private slots:
    void            Button1Slot();

};

#endif // MAINWINDOW_H

mainwindow.cpp

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    m_toolBar = addToolBar(QString("test"));

    m_button1 = new QPushButton(QString("Button 1"), m_toolBar);
    m_toolBar->addWidget(m_button1);
    //m_button1->show(); //Does not change anything
    QObject::connect(m_button1, SIGNAL(clicked(bool)), this, SLOT(Button1Slot()));

    m_button2 = new QPushButton(QString("Button 2"), m_toolBar);
    //m_button2->show(); //Does not change anything
    m_toolBar->addWidget(m_button2);
}

void MainWindow::Button1Slot()
{
    m_button2->hide();              // Does not work
    m_button2->setHidden(true);     // Does not work
    m_button2->setVisible(false);   // Does not work
}

main.cpp

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

Thanks for your help.

[Ratzz]

@Calivernon

Hi doc says
You should use QAction::setVisible() to change the visibility of the widget. Using QWidget::setVisible(), QWidget::show() and QWidget::hide() does not work.

Example here.

[Calivernon]

Thank you Ratzz,

that is perfect!