[PyQt] Qt Property System

[Christopher Probst]

Thank you for answering my question.

On Thu, Jun 15, 2017 at 11:47 AM, Phil Thompson <phil at riverbankcomputing.com
> wrote:

> On 15 Jun 2017, at 4:30 pm, Christopher Probst <christop.probst at gmail.com>
> wrote:
> >
> > Hi,
> >
> > I am starting to feel a lot of love for PyQt. I am inquiring about how
> the Qt Property system translates into PyQt
> >
> > The documentation states:
> > "PyQt5 does not support the setting and getting of Qt properties as if
> they were normal instance attributes. This is because the name of a
> property often conflicts with the name of the property’s getter method."
> >
> > Does this mean I can't write label.setProperty("text" , "HelloWorld")? I
> am not exactly sure what this means.
> >
> > I have tried this for instance and it works great:
> >
> > for i in range(0, propertyCount):
> >         metaProperty = metaObject.property(i)
> >         typeName = metaProperty.typeName()
> >         propertyName = metaProperty.name()
> >         value = object.property(metaProperty.name())
> >         print("propertyName: " + propertyName + ", value: " + str(value)
> + ", type: " + typeName)
> >
> > Do we use the Qt Property system in PyQt?
>
> You can use Qt properties from Python as you can from C++ as your code
> above shows.
>
> The documentation is trying to point out that you can't use Qt properties
> as it they were Python properties. In other words you cannot do...
>
>     label.text = "HelloWorld"
>
> However you can use pyqtProperty to define properties that behave as both
> Python and Qt properties at the same time.
>
> Phil
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