Re: Missing function in Glib::Property ?

[Murray Cumming <murrayc murrayc com>]

On Thu, 2008-09-25 at 00:51 +0200, Johannes Lorenz wrote:
> Hi,
> 
> I do not know if this is really a bug, but I better tell you of it. It might also be a fault of mine (sry).
> 
> I am writing my own cell renderer (inherited from CellRenderer) and want to create a read only property, but it does not work.
> 
> Glib::Property< MultipleChoiceString > property_mcs_; // property declaration
> Glib::PropertyProxy< MultipleChoiceString > property_mcs() { return property_mcs_.get_proxy(); } // works
> Glib::PropertyProxy_ReadOnly< MultipleChoiceString > property_mcs() const { return property_mcs_.get_proxy(); } // error
> 
> The third line causes an error because calling get_proxy on the property does not keep the property constant.

Do you mean a compilation error? Does the mutable keyword help?

>  Maybe, one should add a function for a Property that returns a PropertyProxy_ReadOnly? How else could this problem be solved?
> 
> Thank you for answers in advance,
> Johannes
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