How to create this button

[sonulohani]

9040
How to create this type of button after clicking which shows the custom menu like this:-
9041

[lanz]

First you should create a tool button, then add QMenu to it. That simple :D

QMenu *menu = new QMenu (this->ui.toolButton);
// see overloads
menu->addAction ("Hello");
menu->addAction ("There");
this->ui.toolButton->setMenu (menu);
// that mode enables drop-down arrow, you can also try another modes
this->ui.toolButton->setPopupMode (QToolButton::MenuButtonPopup);