SOME STRING HANDLING KEYWORDS
This chapter explains some keywords concerning string handling. You should
have read the chapter of this manual concerning strings first.
Sometimes, some of the query or change tags do not return a string, but a
pointer to a string. This is an address where the string lies in the
completely useless 'C' format. The MKSTRING$ function looks at the string
located at that address, and returns it to SBasic as a real string.
Syntax:
String$=MKSTRING$(address)
Example:
l_item_t=PWquery(my_loose_item_object,PW('LOOSE_TEXT',))
item_text$=MKSTRING(l_item_t)
This queries the item and gets a pointer to the text of the item from it,
and then makes a string out of this, which is returned in item_text$.
Some of the ProWesS calls will set a string passed to them to a new value.
Of course, ProWesS only sets this in the 'C' format - i.e. it forgets to
make the new length of the string. MKLEN does that - it makes sure that a
string passed to it will be so long that is stops just before the first
CHR$(0) in that string. Use only when the string was modified by ProWesS,
i.e. when it is a call and return parameter to ProWesS. The length of the
string that will be set does not count the CHR$(0) at the end - in other
words, this will no longer be part of the SBasic string.
Syntax:
MKLEN
string$
This does the same as MKLEN, but keeps the CHR$(0) at the end.
PROGS, Professional & Graphical Software
last edited 1996 May 30 (wl)