Problem with setFont for a PushButton

[arunvv]

Hi All

I am having a problem with setFont for a PushButton.
I have designer GUI which have GroupBoxes, inside these GroupBoxes I have pushbuttons, where the pushbuttons font set to sanserif, 10, Bold.
On clicking these pushbuttons I need to change the text on PushButton as well as from bold to normal.
Here is the Code Snippet for changing font for a pushbutton which is not working for me.

code:

void MainWindow::function1()
{
   ....
   ....
    QObject::connect(pushButton1, SIGNAL(clicked()), this, SLOT(changeProperties()));
}
 
void MainWindow::changeProperties()
{
     .....
      .....
      /*QFont f declared in .h file*/
      f.setPointSize(10);
      f.setBold(false);
      f.setWeight(5);
      pushButton1->setFont(f);
      pushButton1->setText("Changed Property");
}

void MainWindow::function1()
{
   ....
   ....
    QObject::connect(pushButton1, SIGNAL(clicked()), this, SLOT(changeProperties()));
}

void MainWindow::changeProperties()
{
     .....
      .....
      /*QFont f declared in .h file*/
      f.setPointSize(10);
      f.setBold(false);
      f.setWeight(5);
      pushButton1->setFont(f);
      pushButton1->setText("Changed Property");
}

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I am expicitly trying to change the font properties to this pushButton widget, which should overwrite the its own properties for font or parent widget properties, if at all it is using.
I am not sure why it is not changing. Help me in this regard.

Thanks & Regards,
Arun