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variant-t-extractors.md

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description Learn more about: _variant_t Extractors
title _variant_t Extractors
ms.date 11/04/2016
f1_keywords
_variant_t.operatordouble
operatorlong
_variant_t::operator_bstr_t
operatordouble
_variant_t.operatorCY
operatorCY
_variant_t::operatorCY
_variant_t::operatordouble
operatorfloat
operatorBYTE
_variant_t.operatorDECIMAL
_variant_t::operatorlong
operatorIDispatch
_variant_t.operatorBYTE
operatorDECIMAL
_variant_t.operator_bstr_t
_variant_t::operatorDECIMAL
_variant_t.operatorIUnknown
_variant_t.operatorlong
_variant_t::operatorIDispatch
_variant_t::operatorIUnknown
operatorIUnknown
_variant_t.operatorbool
_variant_t::operatorBYTE
_variant_t.operatorfloat
operator_bstr_t
_variant_t::operatorbool
operatorshort
_variant_t::operatorshort
_variant_t::operatorfloat
_variant_t.operatorIDispatch
_variant_t.operatorshort
helpviewer_keywords
extractors, _variant_t class
operator CY
operator IDispatch
operator SHORT
operator double
operator long
operator _bstr_t
operator DECIMAL
operator float
operator bool
operator BYTE
operator IUnknown
ms.assetid 33c1782f-045a-4673-9619-1d750efc83a9

_variant_t Extractors

Microsoft Specific

Extract data from the encapsulated VARIANT object.

Syntax

operator short( ) const;
operator long( ) const;
operator float( ) const;
operator double( ) const;
operator CY( ) const;
operator _bstr_t( ) const;
operator IDispatch*( ) const;
operator bool( ) const;
operator IUnknown*( ) const;
operator DECIMAL( ) const;
operator BYTE( ) const;
operator VARIANT() const throw();
operator char() const;
operator unsigned short() const;
operator unsigned long() const;
operator int() const;
operator unsigned int() const;
operator __int64() const;
operator unsigned __int64() const;

Remarks

Extracts raw data from an encapsulated VARIANT. If the VARIANT is not already the proper type, VariantChangeType is used to attempt a conversion, and an error is generated upon failure:

  • operator short( ) Extracts a short integer value.

  • operator long( ) Extracts a long integer value.

  • operator float( ) Extracts a float numerical value.

  • operator double( ) Extracts a double integer value.

  • operator CY( ) Extracts a CY object.

  • operator bool( ) Extracts a bool value.

  • operator DECIMAL( ) Extracts a DECIMAL value.

  • operator BYTE( ) Extracts a BYTE value.

  • operator _bstr_t( ) Extracts a string, which is encapsulated in a _bstr_t object.

  • operator IDispatch*( ) Extracts a dispinterface pointer from an encapsulated VARIANT. AddRef is called on the resulting pointer, so it is up to you to call Release to free it.

  • operator IUnknown*( ) Extracts a COM interface pointer from an encapsulated VARIANT. AddRef is called on the resulting pointer, so it is up to you to call Release to free it.

END Microsoft Specific

See also

_variant_t Class