//该类不提供公共构造函数
Device
Align
Arc
ArrayList
Audio
AudioTrack
Background
Block
Button
Camera
Circle
CollideGroup
Colliders
Color
Combination
Coordinate
Device
Font
FontStyle
FontVariant
FontWeight
Force
GameObject
Graphics
Ground
GUI
Image
ImageAnimation
Joystick
Keyboard
KeyEventArgs
Layer
Line
LinkList
Matrix
Mouse
MouseEventArgs
OneWayGround
Output
Particle
Path
Point
Polygon
Position
Rectangle
SarEngine
Scene
Text
TextAlign
TextBaseline
Thickness
Touch
TouchEventArgs
Vector2
Wall
用于获取用户输入设备及其状态。该类的实例由引擎自动构造。
Syntax