qt - C++ - QListWidget select first item -

in qmainwindow constructor read database , fill qlistwidget items. apparently there no item selected have on own. have slot called when click on item in list.

i tried setcurrentrow( const int ) if slot won't called. i've seen function setcurrentindex( const qmodelindex & ) i'm not familiar qmodelindex.

how tell qlistwidget select first item , call on_list_clicked(const qmodelindex& index) slot?

edit: also, cannot use other slot clicked because currentrowchanged(int) , itemselectionchanged() both make program crash when remove index list.

so somehow need perform click on list...

calling setcurrentrow() emits signal currentrowchanged(), accepts int instead of qmodelindex.

simply connect signal instead of itemselectionchanged().

sample code:

mainwindow::mainwindow(qwidget *parent) :     qmainwindow(parent),     ui(new ui::mainwindow) {     ui->setupui(this);     ui->listwidget->setcurrentrow(1); }  void mainwindow::on_listwidget_currentrowchanged(int currentrow) {     qdebug() << currentrow; }