Qt::ItemIsSelectable in a model/view structure

[schall_l]

Thank you,

I've tested this by implementing a selection model class deriving from QItemSelectionModel and saw the following behavior

-1- Clicking on a Qt::ItemIsSelectable item /b/ when beeing on a Qt::ItemIsSelectable item /a/ will call:
select(const QItemSelection ... with command = 35 with selection containing the destinated selected item /b/
select(const QModelIndex ... for the destinated selected item /b/ with command = 0
select(const QItemSelection ... with command = 0 with selection containing the destinated selected item /b/


-2- Clicking on a non Qt::ItemIsSelectable /b/ item when beeing on a Qt::ItemIsSelectable item /a/ will call:
select(const QItemSelection ... with command = 35 with selection containing no item


-3- Clicking on a Qt::ItemIsSelectable item /b/ when beeing on a non Qt::ItemIsSelectable /a/ item will call:
select(const QItemSelection ... with command = 35 with selection containing the destinated selected item /b/
select(const QModelIndex ... for the destinated selected item /b/ with command = 0
select(const QItemSelection ... with command = 0 with selection containing the destinated selected item /b/


-4- Clicking a non Qt::ItemIsSelectable item when beeing on a non Qt::ItemIsSelectable item will call:
select(const QItemSelection ... is called with command = 35 with selection containing no item


So it looked like the calls of the select functions are already the result of some kind of treatment resulting in the new selection.

Finally I went to reimplement mousePressEvent and mouseReleaseEvent in order to catch the mouse events on a QModelIndex I do not want to be selectable:

void 
SideBarTree::mousePressEvent(QMouseEvent *event)
{
    QPoint pos = event->pos();
    QModelIndex index = indexAt(pos);
	if (index.row() == SideBar::Spacer1) return;
	if (index.row() == SideBar::Spacer2) return;
 
	QTreeView::mousePressEvent(event);
}
 
void 
SideBarTree::mouseReleaseEvent(QMouseEvent *event)
{
    QPoint pos = event->pos();
    QModelIndex index = indexAt(pos);
	if (index.row() == SideBar::Spacer1) return;
	if (index.row() == SideBar::Spacer2) return;
 
	QTreeView::mouseReleaseEvent(event);
}

void 
SideBarTree::mousePressEvent(QMouseEvent *event)
{
    QPoint pos = event->pos();
    QModelIndex index = indexAt(pos);
	if (index.row() == SideBar::Spacer1) return;
	if (index.row() == SideBar::Spacer2) return;

	QTreeView::mousePressEvent(event);
}

void 
SideBarTree::mouseReleaseEvent(QMouseEvent *event)
{
    QPoint pos = event->pos();
    QModelIndex index = indexAt(pos);
	if (index.row() == SideBar::Spacer1) return;
	if (index.row() == SideBar::Spacer2) return;

	QTreeView::mouseReleaseEvent(event);
}

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This seems to work.