Qt-interest Archive, April 2008
Model/View programming: Getting the view index given the model index
Message 1 in thread
In general terms I'm looking for a way to obtain the the row/column
indices's of a view given the QModelIndex of the associated model.
More specifically I'm looking for a way to move a column in a QTreeView
given the column name in the QSqlTableModel.
I can almost do it like this:
m_pTreeView->header()->moveSection(m_pTreeModel->fieldIndex("first_name"),
1);
Except if other columns (or this column) in the view have already been
moved (either programmatically or by the user) then
m_pTreeModel->fieldIndex("first_name") won't necessarily get you the
index you want.
Does anyone have any ideas?
-Jason
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Message 2 in thread
Jason Dolan a écrit :
> In general terms I'm looking for a way to obtain the the row/column
> indices's of a view given the QModelIndex of the associated model.
>
> More specifically I'm looking for a way to move a column in a QTreeView
> given the column name in the QSqlTableModel.
>
> I can almost do it like this:
>
> m_pTreeView->header()->moveSection(m_pTreeModel->fieldIndex("first_name"),
> 1);
>
> Except if other columns (or this column) in the view have already been
> moved (either programmatically or by the user) then
> m_pTreeModel->fieldIndex("first_name") won't necessarily get you the
> index you want.
>
> Does anyone have any ideas?
>
> -Jason
You should have a look at mapFromSource an mapToSource of
QAbstractProxyModel, it will give you exactly what you are looking for.
You will have to insert a QProxyModel between your view and model if I
remember correctly.
Passing QModelIndex to qDebug(), gives very usefull informations, colum,
row, ... and to what the index is associated (Model ...)
Hope that's help
Nicolas
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