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CAnimationVariableIntegerChangeHandler Class

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The latest version of this topic can be found at CAnimationVariableIntegerChangeHandler Class.

Implements a callback, which is called by the Animation API when the value of an animation variable changes.

Syntax

class CAnimationVariableIntegerChangeHandler : public CUIAnimationVariableIntegerChangeHandlerBase<CAnimationVariableIntegerChangeHandler>;

Members

Public Constructors

Name Description
CAnimationVariableIntegerChangeHandler::CAnimationVariableIntegerChangeHandler Constructs a CAnimationVariableIntegerChangeHandler object.

Public Methods

Name Description
CAnimationVariableIntegerChangeHandler::CreateInstance Creates an instance of CAnimationVariableIntegerChangeHandler callback.
CAnimationVariableIntegerChangeHandler::OnIntegerValueChanged Called when a value of an animation variable has changed. (Overrides CUIAnimationVariableIntegerChangeHandlerBase::OnIntegerValueChanged.)
CAnimationVariableIntegerChangeHandler::SetAnimationController Stores a pointer to animation controller to route events.

Remarks

This event handler is created and passed to IUIAnimationVariable::SetVariableIntegerChangeHandler method, when you call CAnimationVariable::EnableIntegerValueChangedEvent or CAnimationBaseObject::EnableIntegerValueChangedEvent (which enables this event for all animation variables encapsulated in an animation object).

Inheritance Hierarchy

MFC Classes

CUIAnimationCallbackBase

CUIAnimationVariableIntegerChangeHandlerBase

CAnimationVariableIntegerChangeHandler

Requirements

Header: afxanimationcontroller.h

CAnimationVariableIntegerChangeHandler::CAnimationVariableIntegerChangeHandler

Constructs a CAnimationVariableIntegerChangeHandler object.

CAnimationVariableIntegerChangeHandler ();

CAnimationVariableIntegerChangeHandler::CreateInstance

Creates an instance of CAnimationVariableIntegerChangeHandler callback.

static COM_DECLSPEC_NOTHROW HRESULT CreateInstance(
    CAnimationController* pAnimationController,  
    IUIAnimationVariableIntegerChangeHandler** ppHandler);

Parameters

pAnimationController
A pointer to animation controller, which will receive events.

ppHandler

Return Value

If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

CAnimationVariableIntegerChangeHandler::OnIntegerValueChanged

Called when a value of an animation variable has changed.

IFACEMETHOD(OnIntegerValueChanged) (
    __in IUIAnimationStoryboard* storyboard,
    __in IUIAnimationVariable* variable,
    __in INT32 newValue,
    __in INT32 previousValue);

Parameters

storyboard
The storyboard that is animating the variable.

variable
The animation variable that was updated.

newValue
The new rounded value.

previousValue
The previous rounded value.

Return Value

S_OK if the method succeeds; otherwise E_FAIL.

CAnimationVariableIntegerChangeHandler::SetAnimationController

Stores a pointer to animation controller to route events.

void SetAnimationController(CAnimationController* pAnimationController);

Parameters

pAnimationController
A pointer to animation controller, which will receive events.

See Also

Classes