_bstr_t::operator +=, +
Microsoft Specific
_bstr_t& operator+=( const _bstr_t& s1 ) throw( _com_error );
_bstr_t operator+( const _bstr_t& s1 ) const throw( _com_error );
friend _bstr_t operator+( const char* s2**, const _bstr_t&** s1 );
friend _bstr_t operator+( const wchar_t* s3**, const _bstr_t&** s1 );
Parameters
s1
a _bstr_t object
s2
a multibyte string
s3
a Unicode string
Remarks
These operators perform string concatenation:
operator+=( s1 ) Appends the characters in the encapsulated BSTR of s1 to the end of this object’s encapsulated BSTR.
operator+( s1 ) Returns the new _bstr_t which is formed by concatenating this object’s BSTR with that of s1.
operator+( s2**,** s1 ) Returns a new _bstr_t which is formed by concatenating a multibyte string s2, converted to Unicode, with the BSTR encapsulated in s1.
operator+( s3**,** s1 ) Returns a new _bstr_t which is formed by concatenating a Unicode string s3 with the BSTR encapsulated in s1.
END Microsoft Specific