SysReAllocString function (oleauto.h)

Reallocates a previously allocated string to be the size of a second string and copies the second string into the reallocated memory.

INT SysReAllocString(
  [in, out]      BSTR          *pbstr,
  [in, optional] const OLECHAR *psz
);

[in, out] pbstr

The previously allocated string.

[in, optional] psz

The string to copy.

The address passed in psz cannot be part of the string passed in pbstr, or unexpected results may occur.

If pbstr is NULL, there will be an access violation and the program will crash. It is your responsibility to protect this function against NULL pointers.

String Manipulation Functions