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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

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