[Qt-interest] Checkbox in the header of a model?

[Clinton Stimpson]

Dario Ahdoot wrote:
>
> I am trying to put a tri-state check box in the header of one of the 
> columns of my QAbstractItemModel classes, but am finding that it 
> doesn’t seem to be possible. I am overriding 
> QAbstractItemModel::headerData and checking for Qt::CheckStateRole but 
> that role never seems to get passed in. Is there any way to achieve this?
>
> Searching Qt docs and google in general seems to have no mention of 
> this. I imagine this feature is so common that Qt would support it out 
> of the box, but I guess I’m wrong.
>
You can do it by setting a pixmap of the chechbox in with the 
DecorationRole.
You'll have to control the pixmap yourself, with maybe the help of 
QStyle for a native look.

Clint