c++ - (Qt) Create signal from QButtonGroup of PushButtons? -

i confused on how whole thing works.

i have pushbuttons put group this:

mainwindow::mainwindow(qwidget *parent) :     qmainwindow(parent),     ui(new ui::mainwindow) {     ui->setupui(this);     addslotstogroup(); }  void mainwindow::addslotstogroup() {     qbuttongroup* group = new qbuttongroup(this);     group->addbutton(ui->slot_0);     group->addbutton(ui->slot_1);     //... } 

and want create slot gets id of button clicked in group. (sorry if explained poorly :( )

so did (pure guess after googling)

mainwindow::mainwindow(qwidget *parent) :     qmainwindow(parent),     ui(new ui::mainwindow) {     ui->setupui(this);     addslotstogroup();     connect(qpushbutton* group, signal(buttonclicked(int)), this, slot(ongroupbuttonclicked(int))); }  void mainwindow::ongroupbuttonclicked(int id) {     qdebug() << id; } 

and no surprise, got error saying group undeclared identifier , qpushbutton illegal use etc.

i hate have used signals/slots designer window, need 1 thing, , i'm set future. :)

thanks time. :)

try following:

mainwindow::mainwindow(qwidget *parent) :     qmainwindow(parent),     ui(new ui::mainwindow) {     ui->setupui(this);     addslotstogroup(); }  void mainwindow::addslotstogroup() {     qbuttongroup* group = new qbuttongroup(this);     group->addbutton(ui->slot_0);     group->addbutton(ui->slot_1);     //...     connect(group, signal(buttonclicked(int)),             this, slot(ongroupbuttonclicked(int))); } 

by way, need learn c++ first master qt.