[Qt-interest] Q_PROPERTIES not visible in QMetaObject

[Schimkowitsch Robert]

No way I could declare the metatype without the *.
 
As Q_DECLARE_METATYPE documentation says:
"This macro makes the type Type known to QMetaType as long as it
provides a public default constructor, a public copy constructor and a
public destructor."
 
and as QObject documentation says:
"QObject has neither a copy constructor nor an assignment operator. This
is by design. Actually, they are declared, but in a private section with
the macro Q_DISABLE_COPY()."
 
Since I am a QObject subclass, I cannot have a copy constructor, hence I
can only declare the metatype to <MyClass>*
 
Kind regards

Robert Schimkowitsch 



________________________________

From: qt-interest-bounces+robert.schimkowitsch=andritz.com at qt.nokia.com
[mailto:qt-interest-bounces+robert.schimkowitsch=andritz.com at qt.nokia.co
m] On Behalf Of Tony Rietwyk
Sent: Wednesday, October 05, 2011 1:11 AM
To: qt-interest at qt.nokia.com
Subject: Re: [Qt-interest] Q_PROPERTIES not visible in QMetaObject



Hi Robert, 

 

I'm not sure, but have a look at the docs for Q_DECLARE_METATYPE and
qRegisterMetaType again - the examples there do not include the *.  

 

Hope that helps, 

 

Tony

 

 

 

From: qt-interest-bounces+tony.rietwyk=rightsoft.com.au at qt.nokia.com
[mailto:qt-interest-bounces+tony.rietwyk=rightsoft.com.au at qt.nokia.com]
On Behalf Of Schimkowitsch Robert
Sent: Wednesday, 5 October 2011 3:15 AM
To: qt-interest at qt.nokia.com
Subject: [Qt-interest] Q_PROPERTIES not visible in QMetaObject

 

I have declared a couple of properties in an QObject-subclass, but they
do not become visible when iterating through all QMetaObject's
properties.

I have the class: 

class CPel_PictureElement : public CPel_ContainerElement 
{ 
    Q_OBJECT 
    Q_INTERFACES(IPel_Element) 

    Q_PROPERTY(QString PictureName READ pictureName WRITE
setPictureName) 
    Q_PROPERTY(QString PictureAuthor READ pictureAuthor WRITE
setPictureAuthor) 

// Constructors, Methods and Members 
} 

Q_DECLARE_METATYPE(CPel_PictureElement*) 

 

CPel_ContainerElement, a QGraphicsWidget, and thereby a QObject
subclass. 
(It is also a subclass of a registered interface called IPel_Element)). 

The class is compiled within a static library (.a-file using MinGW), and
used in an executable. 

There I attempt to read the property information this way: 

                CPel_PictureElement* pic = new CPel_PictureElement(); 

                for ( int i = 0; i < pic->metaObject()->propertyCount();
++i) 
                { 
                    qDebug() << pic->metaObject()->property(i).name(); 
                } 

I only get the properties up to QGraphicsWidget, not the two properties
I have defined. 

I have also tried manually calling 
qRegisterMetaType<CPel_PictureElement*>(); 
- doesn't change anything. 

Any ideas what might be wrong here? 

 

Kind regards 

Robert Schimkowitsch 

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