QTableView clearSelection fails with ASSERT: "!isEmpty()" in file /usr/include/qt4/QtCore/qlist.h, line 282
c++, qabstractitemmodel, qt, qt-signals, qtableview
Solution
Well... it was a pretty dumb mistake. As vahancho said, it implied a recursive call. I had to add a line to my select function to skip the second ( recursive ) call.
if( selected.indexes( ).empty( ) ) return;
It was my big mistake, but maybe it helps others too.
Problem
I have this class: ``` class MyWidget : public QWidget { Q_OBJECT public: ... public slot: void select( const QItemSelection& selected, const QItemSelection& deselected); private: QTableView* view; MyModelClass* model; } ``` In my cunstructor: ``` view->setEditTriggers( QAbstractItemView::NoEditTriggers ); view->setSelectionMode( QAbstractItemView::SelectionMode::SingleSelection ); view->setSelectionBehavior( QAbstractItemView::SelectionBehavior::SelectRows ); connect( view->selectionModel( ), SIGNAL( selectionChanged ( const QItemSelection&, const QItemSelection& ) ), this, SLOT( select( const QItemSelection&, const QItemSelection& ) ) ); // and few other things ``` In my slot implementation: ``` void MyWidget::select( const QItemSelection& selected, const QItemSelection& deselected ) { //... doing few things // at the end: view->clearSelection(); // tried view->selectionModel()->clear() and view->selectionModel()->clearSelection() too // but got the same result } ``` It compiles just right, but when I run and do a selection it crashes at the end with this error message: ASSERT: "!isEmpty()" in file /usr/include/qt4/QtCore/qlist.h, line 282 I tried other tricks as well: Reimplementing showEvent method and calling clearSelection from that context, but didn't help :( My Qt version is 4.8.1. Any help would be nice. Thanks in advance.