Note negative widths for button

1 files changed, 5 insertions, 3 deletions

diff --git a/doc/button.n b/doc/button.n
index 2935c48..1a7d2ec 100644
--- a/doc/button.n
+++ b/doc/button.n
@@ -5,7 +5,7 @@
 '\" See the file "license.terms" for information on usage and redistribution
 '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 '\" 
-'\" RCS: @(#) $Id: button.n,v 1.16 2008/04/20 19:19:23 patthoyts Exp $
+'\" RCS: @(#) $Id: button.n,v 1.17 2008/05/11 00:12:02 patthoyts Exp $
 '\" 
 .so man.macros
 .TH button n 4.4 Tk "Tk Built-In Commands"
@@ -70,8 +70,10 @@ In this state the \fBdisabledForeground\fR and
 .OP \-width width Width
 Specifies a desired width for the button.
 If an image or bitmap is being displayed in the button then the value is in
-screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR);
-for text it is in characters.
+screen units (i.e. any of the forms acceptable to \fBTk_GetPixels\fR).
+For a text button (no image or with \fB\-compound none\fR) then the width 
+specifies how much space in characters to allocate for the text label.
+If the width is negative then this specifies a minimum width.
 If this option is not specified, the button's desired width is computed
 from the size of the image or bitmap or text being displayed in it.
 .BE