Problem with Parent QWidget and Buttons not working

[VireX]

Thanks thats what was missing, I thought Q_OBJECT is only if i use SLOT/SIGNALs.

[jpn]

I thought Q_OBJECT is only if i use SLOT/SIGNALs.

Not only those, but also other meta-object system stuff (see Meta-Object System and QMetaObject).

The Q_OBJECT macro must appear in the private section of a class definition that declares its own signals and slots or that uses other services provided by Qt's meta-object system.

[wysota]

Not only those, but also other meta-object system stuff (see Meta-Object System and QMetaObject).

Or the other way round as signals and slots use the meta-object system and not vice versa. So Q_OBJECT enables creation of a meta-object for the class which implies an ability to declare signals and slots.