Re: How to set gtk_entry size?

[Paul Davis <pbd Op Net>]

>I'm creating a small window that takes in parameters for the creation of
>objects on the fly.  So I'm using a bunch of gtk_entrys to grab those
>settings.  But I seem unable to control the actual (physical) width of
>these entries.  Using gtk_entry_max_length() has no effect on that.
>
>I *guess* I could use gtk_widget_set_usize() but would rather not since
>it uses pixel values.

my approach to this is to:

   1) determine the longest string that will appear in the entry
   2) use gdk_string_extents to get the width of that string
        in the particular style in use for the entry widget
   3) use gtk_widget_set_usize to that size

to demonstrate this function (which i trust made it into GTK+ 1.3), i
enclose (once again):

/*
    Copyright (C) 1998-99 Paul Barton-Davis
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id: gtkutils.c,v 1.1 1999/11/29 18:38:11 pbd Exp $
*/

#include <gtk/gtk.h>

void
gtk_widget_set_usize_to_display_given_text (GtkWidget *w,
					    const gchar *text,
					    gint hpadding,
					    gint vpadding)

{
	guint width;
	guint lbearing;
	guint rbearing;
	guint ascent;
	guint descent;
	
	gdk_string_extents (w->style->font,
			    text,
			    &lbearing,
			    &rbearing,
			    &width,
			    &ascent,
			    &descent);

	gtk_widget_set_usize (w, width+hpadding, ascent+descent+vpadding);
}