HStateVariableEvent Class Reference [Device Model]

A class used to transfer HStateVariable event information. More...

#include <HStateVariableEvent>

List of all members.

Public Member Functions
	HStateVariableEvent ()
	HStateVariableEvent (HStateVariable *eventSource, const QVariant &previousValue, const QVariant &newValue)
	HStateVariableEvent (const HStateVariableEvent &)
virtual	~HStateVariableEvent ()
HStateVariableEvent &	operator= (const HStateVariableEvent &)
bool	isValid () const
HStateVariable *	eventSource () const
QVariant	previousValue () const
QVariant	newValue () const

---

Detailed Description

See also:

HStateVariable::valueChanged()

Remarks:

this class is not thread-safe.

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Constructor & Destructor Documentation

HStateVariableEvent

(

)

Creates a new, invalid instance.

See also:

isValid()

HStateVariableEvent	(	HStateVariable *	eventSource,
		const QVariant &	previousValue,
		const QVariant &	newValue
	)

Creates a new instance based on the provided values.

Parameters:

	eventSource	specifies the state variable that generated the event.
	previousValue	specifies the value before the value changed.
	newValue	specifies the newly set value.

Remarks:

in case the previousValue and newValue contains a different data types, the values are ignored and the object will be invalid. Similarly, if the eventSource is not defined, the object will be invalid.

See also:

isValid()

HStateVariableEvent

(

const HStateVariableEvent &

other

)

Copy constructor.

Copies the contents of the other to this.

~HStateVariableEvent

(

)

[virtual]

Destroys the instance.

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Member Function Documentation

HStateVariableEvent & operator=

(

const HStateVariableEvent &

other

)

Assigns the contents of the other object to this.

Returns:

reference to this object.

bool isValid

(

)

const

Indicates whether the object is valid.

Returns:

true in case previousValue() and newValue() return a valid QVariant and eventSource() is defined.

HStateVariable * eventSource

(

)

const

Returns the source state variable that generated the event.

Returns:

the source state variable that generated the event.

QVariant previousValue

(

)

const

Returns the previous value of the state variable.

Returns:

the previous value of the state variable.

QVariant newValue

(

)

const

Returns the new, changed value of the state variable.

Returns:

the new, changed value of the state variable.