CorGenericParamAttr Enumeration

Contains values that describe the Type parameters for generic types, as used in calls to IMetaDataEmit2::DefineGenericParam.

Syntax

typedef enum CorGenericParamAttr {

    gpVarianceMask                     =   0x0003,
    gpNonVariant                       =   0x0000,
    gpCovariant                        =   0x0001,
    gpContravariant                    =   0x0002,

    gpSpecialConstraintMask            =   0x001C,
    gpNoSpecialConstraint              =   0x0000,
    gpReferenceTypeConstraint          =   0x0004,
    gpNotNullableValueTypeConstraint   =   0x0008,
    gpDefaultConstructorConstraint     =   0x0010,
    gpAllowByRefLike                   =   0x0020,

} CorGenericParamAttr;

Members

Member	Description
gpVarianceMask	Parameter variance applies only to generic parameters for interfaces and delegates.
gpNonVariant	Indicates the absence of variance.
gpCovariant	Indicates covariance.
gpContravariant	Indicates contravariance.
gpSpecialConstraintMask	Special constraints can apply to any Type parameter.
gpNoSpecialConstraint	Indicates that no constraint applies to the Type parameter.
gpReferenceTypeConstraint	Indicates that the Type parameter must be a reference type.
gpNotNullableValueTypeConstraint	Indicates that the Type parameter must be a value type that cannot be a null value.
gpDefaultConstructorConstraint	Indicates that the Type parameter must have a default public constructor that takes no parameters.
gpAllowByRefLike	Indicates that the Type parameter can be a byref-like type. (Available since .NET 7.)

Requirements

Platforms: See .NET supported operating systems.

Header: CorHdr.h

.NET versions: Available since .NET Framework 2.0