[Qt-interest] Using QAbstractTableModel with Custom Class

[Mandeep Sandhu]

Oops.

Did not see Andre's reply...so some of it might be a repeat! :)

-mandeep

On Wed, Jun 30, 2010 at 6:14 PM, Mandeep Sandhu
<mandeepsandhu.chd at gmail.com> wrote:
>> All I get in my models view is a single row single column view, no headers
>> or anything.
>
> What are you returning in your rowCount()/columnCount() implementation
> of QAbstractTableModel class?
>
> For rowCount() you should be returning the number of items in your
> QMap. (you should return QMap::size() I think)
> For columnCount(), I think you mentioned 3 columns, so you can simply
> return 3 here.
>
> This should set your table dimensions right at least.
>
> For showing proper headers, re-implement the headerData() fxn. Use
> Qt::Orientation orientation to figure out what to return for
> horizontal/vertical headers.
>
> The "section" var tells you for which column header the view is
> requesting data...eg:
>
> if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
>    switch(section) {
>        case 0:
>              return QVariant(QString("file name"));
>        ...
>    }
> }
>
> I'm assuming here that your worker thread has relevant API's to
> extract the info when requested by the view. eg: does it have an API
> to get the file name?
>
> I don't think making your worker thread a model subclass is a good
> idea. The actual data part should be kept outside of the model
> implementation. Best to have worker class expose API's which the model
> can query to fetch the actual data.
>
> HTH,
> -mandeep
>
>>
>> Are there any concrete examples demonstrating this out there that anyone
>> knows of? The more and more I look at this the more I'm becoming convinced
>> that it is the Worker class that needs to be derived from
>> QAbstractTableModel. But maybe I'm wrong.
>>
>> --
>> Bill
>>
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>>
>