qt4 - QListView width -

i writing file manager, , display icons via qlistview. want able change grid size depending on qlistview size, in dolphin. (in dolphin changing window size, changes grid size). have tried getting qlistview::size(), qlistview::sizehint(), qlistview::minimumsizehint() , not fixed values qsize( 256, 192 ) every single time.

so there proper way obtain width of qlistview?

edit: edit question as: there way width of qlistview inside member functions? did try getting size as

    mylistview lv = new mylistview()     qdebug() << lv.size(); 

that gives exact size. not:

    void mylistview::somememberfunction() {         ...         ...         qdebug() << size();         ...         ...         ...     } 

so should reimplement working right?

have tried reimplement showevent ( qshowevent * event ) or paintevent ( qpaintevent * event ) of qlistview , size of widget these functions?

here way. 1. create event-filter

class event_filter : public qobject {     q_object public:     explicit event_filter(qobject *parent = 0);  signals:     void table_resize();// protected:     virtual bool eventfilter(qobject *, qevent *);// public slots:  };  bool event_filter::eventfilter(qobject *pobject, qevent *pevent) {    if (!pobject)        return false;    if(pevent -> type() == qevent::resize)    {        emit table_resize();        return true;    }    return false; } 

1. mainwindow code

   table_filter = new event_filter();       connect(table_filter,signal(table_resize()),this,slot(slot_table_resize())); installeventfilter(table_filter); 

2. slot code

   void mainwindow::slot_table_resize()  {  //resizing table headers    if ((items_table_w != ui -> itemstable -> viewport() -> width()) || (ui -> itemstable -> columnwidth(devtable_column_device) <= 0))   ......  } 

this work fine me.