.TH MatchEditor 3I "7 Dec 1989" "InterViews" "InterViews Reference Manual"
.SH NAME
MatchEditor \- StringEditor with pattern matching
.SH SYNOPSIS
.B #include <InterViews/matcheditor.h>
.SH DESCRIPTION
MatchEditor is a StringEditor subclass that checks the validity of its
contents against a specified pattern.  It is suitable for entering
strings that must conform to a particular format such as a number or a
file name.  The matching pattern is specified according to the rules
of scanf(3).  For example, a pattern of "%3d" will match a 3-digit
integer, a pattern of "%[ab]" will match a string containing only a's
and b's, and a pattern of "(%f, %f)" will match the string "(12.0,
5E23)".
.SH PUBLIC OPERATIONS
.TP
.B "MatchEditor(ButtonState*, const char* sample, const char* done)"
Create a new MatchEditor object.  The ButtonState, sample string, and
termination string are passed to the StringEditor constructor.
.TP
.B "void Match(const char* pattern, boolean keystroke = true)"
Specify the pattern to match against.  When MatchEditor performs
matching, it will highlight any trailing part of the edit string that
does not conform to \fIpattern\fP.  The user can then correct the
string.  If \fIkeystroke\fP is true, matching will occur on every
keystroke; otherwise matching will only occur on the completion of the
edit.  The initial pattern matches any string, and the initial value
of keystroke is true.
.SH RESTRICTIONS
MatchEditor uses sscanf internally to check the pattern match.
Different versions of sscanf have different scanning capabilities;
check with your local version to see what patterns you can use.
.SH SEE ALSO
StringEditor(3I)