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| author | Kavindra Devi Palaraja <kavindra.palaraja@nokia.com> | 2009-08-21 12:31:32 (GMT) |
|---|---|---|
| committer | Kavindra Devi Palaraja <kavindra.palaraja@nokia.com> | 2009-08-21 12:36:25 (GMT) |
| commit | e866577453334f528fdf289ab825af1911586e47 (patch) | |
| tree | 0a0f80b994e2fcc72496f661a601621e8f81d6e2 /src/corelib/kernel/qabstractitemmodel.cpp | |
| parent | 508b447075fb852e61ddf88c92c9099dad292747 (diff) | |
| download | Qt-e866577453334f528fdf289ab825af1911586e47.zip Qt-e866577453334f528fdf289ab825af1911586e47.tar.gz Qt-e866577453334f528fdf289ab825af1911586e47.tar.bz2 | |
Doc - Clarified the use of layoutChanged() in relation to persistent
model indexes
Reviewed-By: Olivier Goffart
Task: 231608
Diffstat (limited to 'src/corelib/kernel/qabstractitemmodel.cpp')
| -rw-r--r-- | src/corelib/kernel/qabstractitemmodel.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp index 17af60d..3b7059b 100644 --- a/src/corelib/kernel/qabstractitemmodel.cpp +++ b/src/corelib/kernel/qabstractitemmodel.cpp @@ -1216,7 +1216,16 @@ void QAbstractItemModelPrivate::columnsRemoved(const QModelIndex &parent, layoutChanged() after changing the layout. Subclasses should update any persistent model indexes before emitting - layoutChanged(). + layoutChanged(). In other words, when the structure changes: + + \list + \o Call beginLayoutChanged() + \o Remember the QModelIndex that will change + \o Update your internal data + \o Call changePersistentIndex() + \o Call endLayoutChanged() + \endlist + \sa layoutAboutToBeChanged(), dataChanged(), headerDataChanged(), reset(), changePersistentIndex() |