Fixed bug [1520118fff] - -validate resets to none

FossilOrigin-Name: c020d102aaaec1ea5875444221dc86da79600cbc

1 files changed, 11 insertions, 1 deletions

diff --git a/doc/spinbox.n b/doc/spinbox.n
index 1e8cb3a..7227cf1 100644
--- a/doc/spinbox.n
+++ b/doc/spinbox.n
@@ -196,7 +196,7 @@ dangerous to mix.  Any problems have been overcome so that using the
 the spinbox widget.  Using the \fB\-textvariable\fR for read-only purposes will
 never cause problems.  The danger comes when you try set the
 \fB\-textvariable\fR to something that the \fB\-validatecommand\fR would not
-accept, which causes \fB\-validate\fR to become \fInone\fR (the
+accept, which causes \fB\-validate\fR to become \fBnone\fR (the
 \fB\-invalidcommand\fR will not be triggered).  The same happens
 when an error occurs evaluating the \fB\-validatecommand\fR.
 .PP
@@ -216,6 +216,16 @@ in the \fB\-validatecommand\fR or \fB\-invalidcommand\fR (whichever one you
 were editing the spinbox widget from).  It is also recommended to not set an
 associated \fB\-textvariable\fR during validation, as that can cause the
 spinbox widget to become out of sync with the \fB\-textvariable\fR.
+.PP
+Also, the \fBvalidate\fR option will set itself to \fBnone\fR when the
+spinbox value gets changed because of adjustment of \fBfrom\fR or \fBto\fR
+and the \fBvalidateCommand\fR returns false. For instance
+.CS
+     \fIspinbox pathName \-from 1 \-to 10 \-validate all \-vcmd {return 0}\fR
+.CE
+will in fact set the \fBvalidate\fR option to \fBnone\fR because the default
+value for the spinbox gets changed (due to the \fBfrom\fR and \fBto\fR
+options) to a value not accepted by the validation script.
 .SH "WIDGET COMMAND"
 .PP
 The \fBspinbox\fR command creates a new Tcl command whose