Qt animation - member doesn't exist

Question

This code:

 QStateMachine *machine = new QStateMachine;

     QState *state1 = new QState(machine->rootState());

I'm getting an error:
C:\Users..\Animated_Button\main.cpp:13: error: 'class QStateMachine' has no member named 'rootState'

Answer 1

Indeed, according to the documentation , QStateMachine has no method named rootState . According to this , it was removed at one point. The article states this:

QStateMachine::rootState() is gone; the state machine now is the root state.

So the code you have comes from an outdated source. You should try doing this:

 QStateMachine *machine = new QStateMachine;

 QState *state1 = new QState(machine);