c++ - connecting SLOT error -


i have file programm.cpp control of connecting page when want connect 1 of programm.cpp functions other push button class gave error

this code :

qobject::connect(loginpage->buttons->button(qdialogbuttonbox::ok),signal(clicked()),this,slot(check_user()));

and error :

/home/alireza/documents/qt/alireza/programm.cpp:19: error: no matching function call 'qobject::connect(qpushbutton*, const char*, programm* const, const char*)'

& function declaration commented :

void programm::check_user() { /*qstring user = loginpage->editpassword->displaytext(); qstring password = loginpage->combousername->currenttext();  qsqlquery myquery("select username teacherusers"); while(myquery.next()) {     qstring username = mydb->query->value(0).tostring();     qstring pass = mydb->query->value(1).tostring();     qdebug()<<username << "   " << pass ;     //if (username == user) }*/ }

programm.h :

#ifndef programm_h #define programm_h #include "login.h" #include "mainwindow.h"  #include "nazem.h" #include "database.h" #include <qtgui> #include <qtcore>  #include <qobject>  class programm { q_object public:     programm();     login *loginpage;     mainwindow *mainwindowpage;     nazem *nazm;     database *mydb; public slots :     void check_user(); };  #endif // programm_h

like said in comments... haven't derived qobject , haven't included q_object macro.

read docs.


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