[commonqt-devel] No applicable method setData

[Stas Boukarev]

Olaf Merkert <olaf at m-merkert.de> writes:

> Hi,
>
> I sort of ported one of the Qt4 Tutorials on Models to commonqt, because I 
> want to get to know both Qt4 MVC stuff and commonqt a bit.  I more or less just 
> wrote the C++ Code in Lisp syntax.
> However, there is an error with the bit of code that calls setData (I attached 
> the relevant code):
>
> No applicable method setData found on #<QStandardItemModel 0x00886620> with 
> arguments (#<QModelIndex 0x007817A0>
>                                                                                        #<QDateTime 
> 0x00889540>)
>    [Condition of type SIMPLE-ERROR]
>
> I tried wrapping the QDateTime object in a QVariant, but that doesn't help, I 
> get a similar error:
>
> No applicable method setData found on #<QStandardItemModel 0x008894D0> with 
> arguments (#<QModelIndex 0x0088A130>
>                                                                                        #<QVariant 
> 0x0088A2E0>)
>    [Condition of type SIMPLE-ERROR]
>
>
> Qt Documentation says setData expects a QVariant& as the last parameter, but I 
> have no clue how to make one of these.  Also, setData works fine with strings.
>
> I use sbcl 1.0.40.0.debian on Debian Squeeze, amd64 and the latest commonqt 
> installed via quicklisp (20110320-git).
>
> Can anybody help me? I'd like to understand where this problem comes from.

Marshalling of DateTimes into QVariant isn't implemented yet, but
(#_new QVariant DateTime) should work with the following patch:
https://github.com/stassats/commonqt/commit/96daa6894111090ff0a52648fd1a730d41a0c209

-- 
With best regards, Stas.