CBaseKeyFrame Class

發行項
04/28/2015

Implements the basic functionality of a keyframe.

class CBaseKeyFrame : public CObject;

Members

Public Constructors

Name	Description
CBaseKeyFrame::CBaseKeyFrame	Constructs a keyframe object.

Public Methods

Name	Description
CBaseKeyFrame::AddToStoryboard	Adds a keyframe to storyboard.
CBaseKeyFrame::GetAnimationKeyframe	Returns the underlying keyframe value.
CBaseKeyFrame::IsAdded	Tells whether a keyframe has been added to storyboard.
CBaseKeyFrame::IsKeyframeAtOffset	Specifies whether the keyframe should be added to storyboard at offset, or after transition.

Protected Data Members

Name	Description
CBaseKeyFrame::m_bAdded	Specifies whether this keyframe has been added to a storyboard.
CBaseKeyFrame::m_bIsKeyframeAtOffset	Specifies whether this keyframe should be added to storyboard at an offset from another existing keyframe, or at the end of some transition.
CBaseKeyFrame::m_keyframe	Represents a Windows Animation API keyframe. When a keyframe is not initialized it is set to the predefined value UI_ANIMATION_KEYFRAME_STORYBOARD_START.

Remarks

Encapsulates UI_ANIMATION_KEYFRAME variable. Serves as a base class for any keyframe implementation. A keyframe represents a moment in time within a storyboard and can be used to specify the start and end times of transitions. There are two types of keyframes - keyframes added to storyboard at the specified offset (in time), or keyframes added after specified transition. Because durations of some transitions can't be known before animation starts, the actual values of some keyframes are determined at runtime only. Because keyframes may depend on transitions, which in their turn depend on keyframes, it's important to prevent infinite recursions when building keyframe chains.

Inheritance Hierarchy

CObject

CBaseKeyFrame

Requirements

Header: afxanimationcontroller.h

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