_bstr_t

C/C++ Language Reference

_bstr_t

Microsoft Specific

A _bstr_t object encapsulates the BSTR data type. The class manages resource allocation and deallocation, via function calls to SysAllocString and SysFreeString, and other BSTR APIs when appropriate. The _bstr_t class uses reference counting to avoid excessive overhead.

#include <comdef.h>

Construction

_bstr_t

Constructs a _bstr_t object.

Operations

copy	Constructs a copy of the encapsulated BSTR.
length	Returns the length of the encapsulated BSTR.

Operators

operator =	Assigns a new value to an existing _bstr_t object.
operator +=	Appends characters to the end of the _bstr_t object.
operator +	Concatenates two strings.
operator !	Checks if the encapsulated BSTR is a NULL string.
operator ==, !=, <, >, <=, >=	Compares two _bstr_t objects.
operator wchar_t, char	Extract the pointers to the encapsulated Unicode or multibyte BSTR object.

END Microsoft Specific