How to access the "?" menu button in QWidget

[mustermann.klaus@gmx.de]

Hallo Everybody,

i have a simple dialog-widget made in Designer. QDialog inherits QWidget, right?

class inputdialog : public QDialog
{
     QObject
 
public: ...the constructor
 
private:
 
     UI:inputdialog *ui;
...

class inputdialog : public QDialog
{
     QObject

public: ...the constructor

private:

     UI:inputdialog *ui;
...

To copy to clipboard, switch view to plain text mode 

Normally I take the rough road and code them on my own, but I gave it a try. Now I have a menubutton wich looks like "?", which certainly means "help" or "about".
When I press this button the widget seems to fall in an undefined state. The mousecursor shows the "forbidden" sign an then it turns into a "beam". After some seconds it returns to normal. Therefore I would not just ignore it.

Question: How do I access this thing? Fill it with actions, switch it off, ..whatever. I didn't find an entry in the prefs of my widget in the designer. Nor I'm very familiar with this product.

Any help as always highly appreciated.

regards, Lars