Provides a general-purpose state for StateMachine . 更多...
import 语句: | import QtQml.StateMachine 1.15 |
Since: | Qt 5.4 |
继承: | |
继承者: |
State objects can have child states as well as transitions to other states. State is part of 声明状态机框架 .
The childMode property determines how child states are treated. For non-parallel state groups, the initialState property must be used to set the initial state. The child states are mutually exclusive states, and the state machine needs to know which child state to enter when the parent state is the target of a transition.
The state emits the State::finished() signal when a final child state ( FinalState ) is entered.
The errorState sets the state's error state. The error state is the state that the state machine will transition to if an error is detected when attempting to enter the state (e.g. because no initial state has been set).
import QtQuick 2.0 import QtQml.StateMachine 1.0 as DSM Rectangle { DSM.StateMachine { id: stateMachine initialState: state running: true DSM.State { id: state } } }
另请参阅 StateMachine and FinalState .
childMode : enumeration |
The child mode of this state
此特性的默认值为 QState .ExclusiveStates.
This enum specifies how a state's child states are treated:
errorState : QAbstractState |
The error state of this state.
initialState : QAbstractState |
The initial state of this state (one of its child states).
This signal is emitted when a final child state of this state is entered.
注意:
相应处理程序是
onFinished
.
另请参阅 QAbstractState::active , QAbstractState::entered ,和 QAbstractState::exited .