c++ - getting text from Qtabewidgetitem changed in qtablewidget -


i have qtablewidget has 3 colomumns.it've changed it's first tow columns label i've inherited qlabeland it's third column qspinbox.

class table:public qtablewidget { q_object  private:  std::vector < std::vector <std::string> > food; public slots:  //  qstring get_number();  public: int row; table(qwidget* parent=0,int row=0,int x=0,int y=0,int weight=10,std::vector <std::vector <std::string> > food=std::vector<std::vector<std::string> >()); //  qstring * get_number(table *); qstring getorder(); };

now i'm trying text of third , first column specific rows in button class have array of table objects in class. if (this->item(i,2)->text()!="0")

but in part of code (just text ()) programs stops running.

can body me why happens , how can text?

i got answer. should this:

string temp=dynamic_cast<qspinbox*>(this->cellwidget(j,2))->text().tostdstring();  if(temp!="0")...

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