Windows.Foundation.Metadata Namespace

Defines the attributes that indicate fundamental properties of Windows Runtime types and members.

Classes

	Name	Description
	ActivatableAttribute	Indicates that the class is an activatable runtime class.
	AllowMultipleAttribute	Indicates that multiple instances of a custom attribute can be applied to a target.
	AttributeUsageAttribute	Specifies the use of another attribute.
	ComposableAttribute	Indicates how a programming element is composed.
	DefaultAttribute	Indicates the default interface for a runtime class.
	DefaultOverloadAttribute	Indicates that a method is the default overload method.
	DeprecatedAttribute	Indicates that a type or member should be marked in metadata as deprecated. Compilers and other developer tools can read this attribute and provide info to the user about the deprecation type and possible alternates.
	DualApiPartitionAttribute	Indicates that the type is supported in desktop apps and in Microsoft Store apps.
	ExclusiveToAttribute	Indicates that the specified type is exclusive to this type.
	GCPressureAttribute	Microsoft internal use only.
	GuidAttribute	Indicates the GUID for the interface or delegate.
	HasVariantAttribute	Indicates that the type is an instance of a variant IInspectable. Applies to runtime classes, interfaces, and parameterized interfaces.
	LengthIsAttribute	Indicates the number of array elements.
	MarshalingBehaviorAttribute	Indicates the marshaling behavior of a Windows Runtime component.
	MuseAttribute	Version of web browser that the runtime class is compatible with.
	OverloadAttribute	Identifies the method as an overload in a language that supports overloading.
	OverridableAttribute	Indicates that the interface contains overridable methods.
	PlatformAttribute	Declares the platform that a type should be supported in, when platform-specific metadata is produced.
	ProtectedAttribute	Indicates that the interface contains protected methods.
	RangeAttribute	Indicates the numeric range constraints for the value of a data field.
	StaticAttribute	Indicates that the type contains only static methods.
	ThreadingAttribute	Indicates the threading model of a Windows Runtime component.
	VariantAttribute	Indicates that the item is an instance of a variant IInspectable. Applies to method parameters, properties, and return values of types.
	VersionAttribute	Indicates the version of the type.
	WebHostHiddenAttribute	Identifies the type as one whose functionality is not projected into the specified target language.

Enumerations

	Name	Description
	AttributeTargets	Specifies the programming construct to which an attribute applies.
	CompositionType	Specifies the visibility of a programming element for which the composable attribute is applied.
	DeprecationType	Indicates a deprecation as Deprecate or Remove.
	GCPressureAmount	Microsoft internal use only.
	MarshalingType	Specifies the marshaling type for the class.
	Platform	Specifies the platforms that a specified type should be supported in
	ThreadingModel	Specifies the threading model.