.TH tie 3 "R1c" "Silicon Graphics"
.SH NAME
.I tie
- tie two valuators to a button 
.SH SYNOPSIS
.nf
.TP \w'FORTRAN\ \ \ 'u
C
.B "tie(b, v1, v2) "
.B "Device b, v1, v2;"
.IP 
.TP \w'FORTRAN\ \ \ 'u
FORTRAN
.B "subroutine tie(b, v1, v2)"
.B "integer*2 b, v1, v2"
.IP 
.TP \w'FORTRAN\ \ \ 'u
Pascal
.B "procedure tie(b, v1, v2: Device);"
.sp
.SH DESCRIPTION
.I Tie                                       
takes three arguments, a button \f3b\f1 and two valuators 
\f3v1\f1 and \f3v2\f1.
Whenever the button is queued, the valuators are also queued.  If the button
is queued, whenever the
button changes state, three entries are made in the queue, recording the
current state of the button and the current positions of each valuator.
One valuator can be tied to a button by making \f3v2\f1=0.  A button can
be untied by making both \f3v1\f1 and \f3v2\f1 zero.
\f3v1\f1 will appear before \f3v2\f1 in the event queue;
both are preceded by \f3b\f1.
.SH "SEE ALSO"
.I getbutton, qbutton
.SH NOTE
This command can only be used in immediate mode.