XmStringNConcat appends a specified number of bytes from s2 to
the end of s1, including tags, directional indicators, and
separators. It then returns the
resulting compound string. The original strings are preserved. The space
for the
resulting compound string is allocated within the function.
The application is responsible for managing the allocated space. The
memory can be recovered by calling XmStringFree.
s1
Specifies the compound string to which a copy of s2 is appended.
s2
Specifies the compound string that is appended to the end of s1.
num_bytes
Specifies the number of bytes of s2 to append to s1.
If this value is less than the
length of s2, as many bytes as possible, but possibly fewer than
this value, will be appended to s1 such that the resulting string
is still a valid compound string.