_variant_t::_variant_t

Microsoft Specific

Constructs a _variant_t object.

_variant_t( ) throw( );

_variant_t(
   const VARIANT& varSrc 
);

_variant_t(
   const VARIANT* pVarSrc 
);

_variant_t(
   const _variant_t& var_t_Src 
);

_variant_t(
   VARIANT& varSrc,
   bool fCopy 
);

_variant_t(
   short sSrc,
   VARTYPE vtSrc = VT_I2 
);

_variant_t(
   long lSrc,
   VARTYPE vtSrc = VT_I4 
);

_variant_t(
   float fltSrc 
) throw( );

_variant_t(
   double dblSrc,
   VARTYPE vtSrc = VT_R8 
);

_variant_t(
   const CY& cySrc 
) throw( );

_variant_t(
   const _bstr_t& bstrSrc 
);

_variant_t(
   const wchar_t *wstrSrc 
);

_variant_t(
   const char* strSrc 
);

_variant_t(
   IDispatch* pDispSrc,
   bool fAddRef = true 
) throw( );

_variant_t(
   bool bSrc 
) throw( );

_variant_t(
   IUnknown* pIUknownSrc,
   bool fAddRef = true 
) throw( );

_variant_t(
   const DECIMAL& decSrc 
) throw( );

_variant_t(
   BYTE bSrc 
) throw( );

variant_t(
   char cSrc
) throw();

_variant_t(
   unsigned short usSrc
) throw();

_variant_t(
   unsigned long ulSrc
) throw();

_variant_t(
   int iSrc
) throw();

_variant_t(
   unsigned int uiSrc
) throw();

_variant_t(
   __int64 i8Src
) throw();

_variant_t(
   unsigned __int64 ui8Src
) throw();

Parameters

varSrc
A VARIANT object to be copied into the new _variant_t object.
pVarSrc
Pointer to a VARIANT object to be copied into the new _variant_t object.
var_t_Src
A _variant_t object to be copied into the new _variant_t object.
fCopy
If false, the supplied VARIANT object is attached to the new _variant_t object without making a new copy by VariantCopy.
ISrc, sSrc
An integer value to be copied into the new _variant_t object.
vtSrc
The VARTYPE for the new _variant_t object.
fltSrc, dblSrc
A numerical value to be copied into the new _variant_t object.
cySrc
A CY object to be copied into the new _variant_t object.
bstrSrc
A _bstr_t object to be copied into the new _variant_t object.
strSrc, wstrSrc
A string to be copied into the new _variant_t object.
bSrc
A bool value to be copied into the new _variant_t object.
pIUknownSrc
COM interface pointer to a VT_UNKNOWN object to be encapsulated into the new _variant_t object.
pDispSrc
COM interface pointer to a VT_DISPATCH object to be encapsulated into the new _variant_t object.
decSrc
A DECIMAL value to be copied into the new _variant_t object.
bSrc
A BYTE value to be copied into the new _variant_t object.
cSrc
A char value to be copied into the new _variant_t object.
usSrc
A unsigned short value to be copied into the new _variant_t object.
ulSrc
A unsigned long value to be copied into the new _variant_t object.
iSrc
An int value to be copied into the new _variant_t object.
uiSrc
An unsigned int value to be copied into the new _variant_t object.
i8Src
An __int64 value to be copied into the new _variant_t object.
ui8Src
An unsigned __int64 value to be copied into the new _variant_t object.

Remarks

_variant_t( ) Constructs an empty _variant_t object, VT_EMPTY.
_variant_t( VARIANT& varSrc ) Constructs a _variant_t object from a copy of the VARIANT object. The variant type is retained.
_variant_t( VARIANT* pVarSrc ) Constructs a _variant_t object from a copy of the VARIANT object. The variant type is retained.
_variant_t( _variant_t& var_t_Src ) Constructs a _variant_t object from another _variant_t object. The variant type is retained.
_variant_t( VARIANT& varSrc**, bool** fCopy ) Constructs a _variant_t object from an existing VARIANT object. If fCopy is false, the VARIANT object is attached to the new object without making a copy.
_variant_t( short sSrc**, VARTYPE** vtSrc = VT_I2 ) Constructs a _variant_t object of type VT_I2 or VT_BOOL from a short integer value. Any other VARTYPE results in an E_INVALIDARG error.
_variant_t( long lSrc**, VARTYPE** vtSrc = VT_I4 ) Constructs a _variant_t object of type VT_I4, VT_BOOL, or VT_ERROR from a long integer value. Any other VARTYPE results in an E_INVALIDARG error.
_variant_t( float fltSrc ) Constructs a _variant_t object of type VT_R4 from a float numerical value.
_variant_t( double dblSrc**, VARTYPE** vtSrc = VT_R8 ) Constructs a _variant_t object of type VT_R8 or VT_DATE from a double numerical value. Any other VARTYPE results in an E_INVALIDARG error.
_variant_t( CY& cySrc ) Constructs a _variant_t object of type VT_CY from a CY object.
_variant_t( _bstr_t& bstrSrc ) Constructs a _variant_t object of type VT_BSTR from a _bstr_t object. A new BSTR is allocated.
**_variant_t( wchar_t ***wstrSrc ) Constructs a _variant_t object of type VT_BSTR from a Unicode string. A new BSTR is allocated.
_variant_t( char* strSrc ) Constructs a _variant_t object of type VT_BSTR from a string. A new BSTR is allocated.
_variant_t( bool bSrc ) Constructs a _variant_t object of type VT_BOOL from a bool value.
_variant_t( IUnknown* pIUknownSrc**, bool** fAddRef = true ) Constructs a _variant_t object of type VT_UNKNOWN from a COM interface pointer. If fAddRef is true, then AddRef is called on the supplied interface pointer to match the call to Release that will occur when the _variant_t object is destroyed. It is up to you to call Release on the supplied interface pointer. If fAddRef is false, this constructor takes ownership of the supplied interface pointer; do not call Release on the supplied interface pointer.
_variant_t( IDispatch* pDispSrc**, bool** fAddRef = true ) Constructs a _variant_t object of type VT_DISPATCH from a COM interface pointer. If fAddRef is true, then AddRef is called on the supplied interface pointer to match the call to Release that will occur when the _variant_t object is destroyed. It is up to you to call Release on the supplied interface pointer. If fAddRef is false, this constructor takes ownership of the supplied interface pointer; do not call Release on the supplied interface pointer.
_variant_t( DECIMAL& decSrc ) Constructs a _variant_t object of type VT_DECIMAL from a DECIMAL value.
_variant_t( BYTE bSrc ) Constructs a _variant_t object of type VT_UI1 from a BYTE value.

END Microsoft Specific

_variant_t::_variant_t

Parameters

Remarks

See Also

Concepts

Zusätzliche Ressourcen