enlighten me on the use of Q_PROPERTY!!

[nupul]

Hi,

Why should one use Q_PROPERTY? as in what advantage does it have over declaring the corresponding attributes and associated READ and WRITE functions as private/public??

Thanks

[jpn]

Properties can be written and read through QObject interface.
You can access the properties without knowing anything about the class in use.
Qt's Property System (http://doc.trolltech.com/4.1/properties.html)

It's not the fastest possible way to access data members of a class, the value of properties comes from genericity.

[jacek]

Why should one use Q_PROPERTY?
It's used for example by the Qt Designer to change widgets' settings.


what advantage does it have over declaring the corresponding attributes and associated READ and WRITE functions as private/public??
Actually you will still need to write such methods. Q_PROPERTY just informs Qt about them.

[nupul]

Actually you will still need to write such methods. Q_PROPERTY just informs Qt about them.

how does this help? i mean how is it different from declaring a private attribute and corresponding methods..Any advantage?

[jacek]

Any advantage?
Look at the Qt Designer --- it doesn't know anything about custom widgets, yet if you create a custom widget plugin, you will be able to change that widgets' properties. How would you implement this without Q_PROPERTY?