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IDiaSymbol11::get_discriminatedUnionTag

  • Article

Retrieves information about the tag of a discriminated union symbol instance.

Syntax

HRESULT get_discriminatedUnionTag(
    IDiaSymbol **ppTagType,
    DWORD *pTagOffset,
    DiaTagValue *pTagMask
);

Parameters

ppTagType

[out] Returns the IDiaSymbol that represents the type of the tag member.

pTagOffset

[out] Returns the byte offset within the parent structure of where the start of the tag member is located.

pTagMask

[out] Returns a mask value if the tag does not fill all the bytes of the tag member; otherwise returns an empty DiaTagValue with the valueSizeBytes set to 0.

Return Value

If successful, returns S_OK; otherwise, returns S_FALSE or an error code.

Note

A return value of S_FALSE means that the property is not available for the symbol.

See also