Public MustInherit Class Visual3D _
    Inherits DependencyObject _
    Implements IAnimatable

Dim instance As Visual3D

public abstract class Visual3D : DependencyObject, 
    IAnimatable

public ref class Visual3D abstract : public DependencyObject, 
    IAnimatable

public abstract class Visual3D extends DependencyObject implements IAnimatable

public abstract class Visual3D extends DependencyObject implements IAnimatable

该类为抽象类；有关 XAML 中可用的派生的非抽象类，请参见 继承层次结构。