A few queries about Model View Programming

[georgep]

Thanks for great advice on this great thread !!!!

Problem: can anyone tell me how to move the checkbox to the RIGHT ??

I think it has something to do with const QStyleOptionViewItem &option;
but i simply cant do: option.decorationPosition=QStyleOptionViewItem::Ri ght;
I am subclassing QStyledItemDelegate if it matters...

[wysota]

Check box is not a decoration so you can't do it this way. You have to provide your own delegate that handles painting and clicking the box in the new position. There is a chance you can move the checkbox to the right if you manage to convince the item it should be there in the first place (for example by reimplementing a proper function from the QStyle subclass you use).

[georgep]

uhm....any idea what class?..

[wysota]

If you are not using any specific style then it's best to either use style sheets or implement a [wiki]Proxy style[/wiki].

[georgep]

I did a : myQTableView->setStyleSheet(styleSheet) but unfortunately it doesnt appear to affect the checkbox. Or did you mean something else maybe?


cheers

[wysota]

Maybe you used a wrong stylesheet? I'm not sure if you can move the checkbox to the right using a stylesheet, so you'll probably have to implement a proxy style.

[montylee]

i think george used the method i gave him i.e. to draw a custom checkbox image in the table view cell and trap mouserelease event inside the cell. So, if the mouse release event falls inside the cell containing the checkbox, then toggle the checkbox.

[georgep]

monty: yes i did, forever gratefull

wysota: i want to implement some filtering on data coming from a model (from a database) and from what I understand the QSortFilterProxyModel is suppose to have been created exactly for this.
What would be the best way to add a column to the proxymodel so that the sourcemodel stays untouched (unaware of the extra column) ? Subclass it ?

[wysota]

Either use a model proxy or subclass the original model, depending what's easier in your case.