Hiding a QPushButton, which is in main function

[A Former User]

Hello everyone!
I have a function which hide a QTableWidget. I want to hide QPushButtons also.

void Kobi::FullScreen ()
{
    tableWidget->hide ();
   
}

This code is in the use_form.cpp file.

QPushButton insertR;
    insertR.setText(QStringLiteral("Zeile einfügen"));

This code is written in the main file.

I want to hide this Button (insertR) in the code which is written in the use_form.cpp but I don't know how to do that?

Thanks a lot,
Henrik

[raven-worx]

@HenrikSt.
here is a rather ugly approach:

//in main()
QPushButton insertR;
    insertR.setObjectName("MyButton");
    insertR.setText(QStringLiteral("Zeile einfügen"));
...
// seach
foreach( QWidget* widget, QApplication::topLevelWidgets() )
{
      if( QPushButton* button = widget->findChild<QPushButton*>("MyButton") )
      {
            button-> .... ;
            break;
      }
}

Better (efficient) solution would be to pass the pointer of the button to all objects who need to access it.
Or implement a custom signal/slot connection, etc.

[A Former User]

Hi,
thanks for your answer. That would be possible.

Do you have an example for the pointer or e.g. a custom signal/slot connection?

That would be really nice. Thank you,
Henrik

[raven-worx]

@HenrikSt.
in your Kobi class, add a setter method:

class Kobi : public ... 
{
public:
...
    void setButtonWidget( QPushButton* button )
    {
        m_PushButton = button;
    }

   void Kobi::FullScreen ()
   {
       tableWidget->hide ();
       // OR EMIT A SIGNAL HERE AND CONNECT IT TO THE PUSHBUTTON'S hide() SLOT
       if( m_PushButton )
           m_PushButton->hide();
   }

private:
     QPointer<QPushButton*> m_PushButton;
}

Easiest would be when you could already create the button in this class?