Silverlight 5

WinRT

	public abstract class CriticalHandleMinusOneIsInvalid
	: CriticalHandle, IDisposable
	public virtual Boolean IsInvalid { get; }

	public abstract class CriticalHandleZeroOrMinusOneIsInvalid
	: CriticalHandle, IDisposable
	public virtual Boolean IsInvalid { get; }

	public sealed class SafeFileHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();

	public abstract class SafeHandleMinusOneIsInvalid
	: SafeHandle, IDisposable
	public virtual Boolean IsInvalid { get; }

	public abstract class SafeHandleZeroOrMinusOneIsInvalid
	: SafeHandle, IDisposable
	public virtual Boolean IsInvalid { get; }

	public sealed class SafeMemoryMappedFileHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();

	public sealed class SafeMemoryMappedViewHandle
	: SafeBuffer, IDisposable
	protected virtual Boolean ReleaseHandle();

	public abstract class SafeNCryptHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();
	protected abstract virtual Boolean ReleaseNativeHandle();

	public sealed class SafeNCryptKeyHandle
	: SafeNCryptHandle, IDisposable
	protected virtual Boolean ReleaseNativeHandle();

	public sealed class SafeNCryptProviderHandle
	: SafeNCryptHandle, IDisposable
	protected virtual Boolean ReleaseNativeHandle();

	public sealed class SafeNCryptSecretHandle
	: SafeNCryptHandle, IDisposable
	protected virtual Boolean ReleaseNativeHandle();

	public sealed class SafePipeHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();

	public sealed class SafeRegistryHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();

	public sealed class SafeWaitHandle
	: SafeHandleZeroOrMinusOneIsInvalid, IDisposable
	protected virtual Boolean ReleaseHandle();