_variant_t Extractors

Microsoft Specific

operator short( ) const throw( _com_error );

operator long( ) const throw( _com_error);

operator float( ) const throw( _com_error );

operator double( ) const throw( _com_error );

operator CY( ) const throw( _com_error );

operator bool( ) const throw( _com_error );

operator DECIMAL( ) const throw( _com_error );

operator BYTE( ) const throw( _com_error );

operator _bstr_t( ) const throw( _com_error );

operator IDispatch*( ) const throw( _com_error );

operator IUnknown*( ) const throw( _com_error );

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.

_variant_t Overview

END Microsoft Specific