Select all cells of a column on single click in qtreeview

[AntriX]

Hi,

I Have a tree view which contains data in table format like:

Col1       Col2     Col3     Col4 
>  H1
>                 B            C           D
>                 E            F           G
>  H2
>                 H           I             J
>                 K           L            M

I want to select all cells of a column when column header is clicked.
I tried implementing sectionClicked signal in my treeview but this is not getting hit if sorting is disabled.
I am performing sorting on doubleclick of column header by using sectionDoubleClicked signal. I am using QSortFilterProxyModel for sorting.

Can any please help me how can i select all cells of a column in QTreeView on single click.

[JonB]

@AntriX
Did you try sectionPressed() instead of sectionClicked()?

Otherwise, I admit I don't know, but at a guess either something like this based on mouse down or it must be possible to separate off the sorting behaviour from the section click notification.

[AntriX]

@JonB Yes I have tried using sectionPressed() too but no success.
do you have any idea how can I disable sorting on section click when setSortingEnabled is set to true.

[Bonnie]

@AntriX Did you try QHeaderView::setSectionsClickable() ?

[AntriX]

@Bonnie said in Select all cells of a column on single click in qtreeview:

setSectionsClickable

Yes This is set to true.

[JonB]

@AntriX
I was about to ask that. Then the following works for me:

    tv->setSortingEnabled(false);
    tv->header()->setSectionsClickable(true);
    QObject::connect(tv->header(), &QHeaderView::sectionClicked, tv, [](int logicalIndex) { qDebug() << logicalIndex; });

Maybe make sure you call setSectionsClickable(true) after setSortingEnabled(false) as the latter might set it false?

[AntriX]

@JonB Thank you for your suggestion. I am able to get sectionClicked signal now by changing some code in my wrapper headerview class. Wrapper header view class was eating sectionClicked signal.
Now I Have the section number that I clicked. Do you have any idea how can I select all the cells in that column?

[JonB]

@AntriX
I think void QItemSelectionModel::select(const QModelIndex &index, QItemSelectionModel::SelectionFlags command) with QItemSelectionModel::Columns?

[AntriX]

@JonB Thank you. It worked. Do you know any signal which comes up when header is clicked along with ctrl key pressed. I can not find any direct signal for this. I am thinking of implementing it by setting flag when ctrl key pressed. Any better approach to achieve this?

[JonB]

@AntriX
There isn't a separate signal depending on state of modifier buttons like Ctl. You have to attach to mouse down or up and check for modifiers there, or check for global state in normal click slot, I can't recall which is best.