How to click and pop up submenu

Hello, what I want to do is merely pop up a sub-menu when I click on a button.

Code:

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connect(mybutton2, SIGNAL(clicked()), this, SLOT(call()));

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The code above unable to do so. Does anybody knows how to do it?

Use QPushButton::setMenu() or QWidget::setContextMenuPolicy() or create a custom menu in your slot and call exec with the current mouse position, or or or

Ha, I feel embrace to paste the code again.
mybutton2->setContextMenuPolicy(Qt::ActionsContextMenu);
After I click the button, still the same ..

#include <QApplication>
#include <QFont>
#include <QPushButton>
#include <QVBoxLayout>
#include <QWidget>
#include <QIcon>
#include <qpixmap.h>
#include <QAbstractButton>
#include <QToolButton>
#include <QStyle>
#include <QtGui>
#include <QApplication>
#include "analogclock.h"

class MyWidget : public QWidget
{
public:
MyWidget(QWidget *parent = 0);

public slots:
void call();
};

MyWidget::MyWidget(QWidget *parent)
: QWidget(parent)
{
setFixedSize(900, 400);

QToolButton * mybutton2 = new QToolButton(this);
mybutton2->setIcon(QIcon("/shihao/qicon/clock.JPG"));
mybutton2->setText("Sample text");
mybutton2->setToolButtonStyle(Qt::ToolButtonIconOnly);
mybutton2->setIconSize(QSize(50,80));
mybutton2->setGeometry(490, 70, 95, 100);
mybutton2->setAutoRaise(1);

mybutton2->setContextMenuPolicy(Qt::ActionsContextMenu);
connect(mybutton2, SIGNAL(clicked()), this, SLOT(call()));

}

void call(){
AnalogClock clock;
clock.show();
}

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWidget widget;
widget.show();
//AnalogClock clock;
//clock.show();
return app.exec();
}

a) context menu is only executed for mouse right click button. And where are your actions???
b) try to use the mentioned setMenu().

Look at my main program

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
//MyWidget widget;
//widget.show();
AnalogClock clock;
clock.show();
return app.exec();
}

Lets' say I uncomment the Analogclock like above, the clock program are able to display.

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWidget widget;
widget.show();
//AnalogClock clock;
//clock.show();
return app.exec();
}

On the other hand, I uncomment the widget like above code, the menu page able to displayed.
So my problem is, how to I integrate the menu page with analogclock page, when I click the button of menu page, analogclock only will display.
Analogclock not really a menu right? setmenu is the correct library to be use?

Should I place the setmenu(); in the main function?
I apologize if I ask too silly question, my boss throw the whole qt and ask me to explore alone yet just give me a qt link. I am Headache already....

hi Lykurg,

How ? Don't have any solution for me? Come on, just a simple job for you to point up the clue for me...

Thanks and regards
Shi Hao

Or ... is there anywhere pop up a new window by using QPushbutton? Is the QPushbutton able to add pic, adjust pic just like Qtoolbutton?