[PyQt] QDirModel instance

[Scott Frankel]

Fabulous!


On Jul 10, 2008, at 2:08 PM, Andreas Pakulat wrote:

> On 10.07.08 11:46:36, Scott Frankel wrote:
>>
>> Right.  Thanks for pointing out that I still need to explicitly pass
>> "self."
>>
>> I'm still not getting checkboxes displayed in the tree widget,  
>> though.  I
>> believe the problem is in the nested return value in the model's  
>> data()
>> method.
>>
>> The C++ example code I'm following uses a QMap data structure to hold
>> checkState values.  After reading Assistant notes, a python  
>> dir(QtCore),
>> and some googling, I've found that QMap is not implemented in  
>> PyQt.  So
>> I'm using a Dict instead.  Still, my app complains:
>>
>> 	TypeError: invalid result type from DirModel.data()
>>
>>
>> Here's the C++ code I'm following:
>>
>>    virtual QVariant data(const QModelIndex &index, int role =
>> Qt::DisplayRole) const
>>    {
>>        if (role == Qt::CheckStateRole && index.column() == 0) {
>>            return  
>> checkstates.value(fileInfo(index).absoluteFilePath(),
>> Qt::Unchecked);
>
> You need to wrap that in a QVariant, i.e.
>
> return QVariant(....)
>
> data() needs to return a QVariant and Python doesn't support the
> implicit constructors as C++ does.
>
> Andreas
>
> -- 
> You will pass away very quickly.
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Scott Frankel
President/VFX Supervisor
Circle-S Studios
510-339-7477 (o)
510-332-2990 (c)