[Kde-games-devel] A QListView programming problem

[Albert Astals Cid]

A Diumenge, 30 d'octubre de 2011, Ian Wadham vàreu escriure:
> Hi guys,
> 
> In KSudoku the WelcomeScreen contains a list of puzzle types and
> sizes from which the user can select.  I would like to be able to save
> and restore this selection between sessions, using KConfigGroup.
> 
> I thought I could just save and restore an integer row-index, but no
> such luck.  The list is displayed in a QListView, which is declared in
> code generated from a *.ui file created by Designer.  In QListView the
> list is accessed by using QListView::selectionModel()->currentIndex()
> to obtain a QModelIndex object and then that index-object is used to
> retrieve a row from the underlying data collection.  IOW there seems
> to be no easy way to find out where the cursor and highlighting are.

Not sure i understand what your problem is, can't you just save the row() of 
the QModelIndex returned by QListView::selectionModel()->currentIndex() ?

Albert

> 
> I do not think you can save an index-object in KConfigGroup.  I googled
> about on this, but it seems that there is no easy answer for finding
> where the cursor and selection highlighting is in a QListView and then
> resetting that position on a later occasion.
> 
> The best way seems to be to remember one or two attributes of the data
> and, when restoring, search the entire QListView data, find the item you
> want (e.g. by its attribute values) and set the selection there.
> 
> Does anybody know a better way?
> 
> All the best, Ian W.
> 
> P.S. KSudoku's list is always displayed in the same order.
> 
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