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New widget (GtkComboBox) and fixed gdk_window_init to initialize gdk_root_parent some more

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This commit is contained in:
Elliot Lee
1998-01-08 04:13:13 +00:00
parent 4ccc005197
commit 5eee6416f5
17 changed files with 543 additions and 10 deletions
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6
ChangeLog
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-0
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-10
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-2
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-4
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-6
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

6
ChangeLog.pre-2-8
View File

@ -1,3 +1,9 @@
1998-01-07 Elliot Lee <sopwith@localhost.cs.cuc.edu>
* gtk/gtkcombobox.c gtk/gtkcombobox.h: New widget, GtkComboBox
* gdk/gdkwindow.c: Make gdk_window_init set the width &
height of gdk_root_parent
Wed Jan 7 18:06:17 PST 1998 Manish Singh <yosh@gimp.org>
* gtk/gtkentry.c:

2
gdk/gdkwindow.c
View File

@ -70,6 +70,8 @@ gdk_window_init ()
gdk_root_parent.xwindow = gdk_root_window;
gdk_root_parent.window_type = GDK_WINDOW_ROOT;
gdk_root_parent.window.user_data = NULL;
gdk_root_parent.width = width;
gdk_root_parent.height = height;
}
GdkWindow*

2
gdk/x11/gdkwindow-x11.c
View File

@ -70,6 +70,8 @@ gdk_window_init ()
gdk_root_parent.xwindow = gdk_root_window;
gdk_root_parent.window_type = GDK_WINDOW_ROOT;
gdk_root_parent.window.user_data = NULL;
gdk_root_parent.width = width;
gdk_root_parent.height = height;
}
GdkWindow*

2
gtk/Makefile.am
View File

@ -18,6 +18,7 @@ libgtk_la_SOURCES = \
gtkcheckmenuitem.c \
gtkclist.c \
gtkcolorsel.c \
gtkcombobox.c \
gtkcontainer.c \
gtkcurve.c \
gtkdata.c \
@ -106,6 +107,7 @@ gtkinclude_HEADERS = \
gtkcheckmenuitem.h \
gtkclist.h \
gtkcolorsel.h \
gtkcombobox.h \
gtkcontainer.h \
gtkcurve.h \
gtkdata.h \

1
gtk/gtk.h
View File

@ -33,6 +33,7 @@
#include <gtk/gtkcheckmenuitem.h>
#include <gtk/gtkclist.h>
#include <gtk/gtkcolorsel.h>
#include <gtk/gtkcombobox.h>
#include <gtk/gtkcontainer.h>
#include <gtk/gtkcurve.h>
#include <gtk/gtkdata.h>

393
gtk/gtkcombobox.c Normal file
View File

@ -0,0 +1,393 @@
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998 Elliot Lee
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* NOTES about this widget:
It would be nice if we kept track of the last menu item that
people selected, so that we could allow choosing text by using
up/down arrows.
*/
#include <ctype.h>
#include <string.h>
#include "gdk/gdkx.h"
#include "gdk/gdkkeysyms.h"
#include "gdk/gdki18n.h"
#include "gtkcombobox.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkmenu.h"
#include "gtkmenuitem.h"
#include "gtklabel.h"
#include "gtkbin.h"
#define ARROW_SIZE_X 20
#define ARROW_SIZE_Y 20
#define ARROW_PADDING 4
static void gtk_combo_box_class_init (GtkComboBoxClass *class);
static void gtk_combo_box_init (GtkComboBox *combobox);
static void gtk_combo_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_combo_box_size_allocate(GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_combo_box_draw (GtkWidget *widget,
GdkRectangle *area);
static void gtk_combo_box_draw_arrow (GtkWidget *widget);
static gint gtk_combo_box_expose (GtkWidget *object,
GdkEventExpose *event);
static void gtk_combo_box_destroy (GtkObject *object);
#if 0
static gint gtk_combo_box_key_press (GtkWidget *widget,
GdkEventKey *event);
#endif
static gint gtk_combo_box_button_press (GtkWidget *widget,
GdkEventButton *event);
static void gtk_combo_box_realize (GtkWidget *widget);
static void gtk_combo_box_item_activate(GtkWidget *widget,
GtkComboBox *cb);
static void gtk_combo_box_set_down (GtkWidget *widget,
GtkComboBox *cb);
static void gtk_combo_box_set_up (GtkWidget *widget,
GtkComboBox *cb);
static GtkEntryClass *parent_class = NULL;
guint
gtk_combo_box_get_type ()
{
static guint combo_box_type = 0;
if (!combo_box_type)
{
GtkTypeInfo combo_box_info =
{
"GtkComboBox",
sizeof (GtkComboBox),
sizeof (GtkComboBoxClass),
(GtkClassInitFunc) gtk_combo_box_class_init,
(GtkObjectInitFunc) gtk_combo_box_init,
(GtkArgFunc) NULL,
};
combo_box_type = gtk_type_unique (gtk_entry_get_type (), &combo_box_info);
}
return combo_box_type;
}
static void
gtk_combo_box_class_init (GtkComboBoxClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
parent_class = gtk_type_class (gtk_entry_get_type ());
object_class->destroy = gtk_combo_box_destroy;
widget_class->button_press_event = gtk_combo_box_button_press;
#if 0
widget_class->key_press_event = gtk_combo_box_key_press;
#endif
widget_class->size_request = gtk_combo_box_size_request;
widget_class->size_allocate = gtk_combo_box_size_allocate;
widget_class->draw = gtk_combo_box_draw;
widget_class->expose_event = gtk_combo_box_expose;
widget_class->realize = gtk_combo_box_realize;
}
static void
gtk_combo_box_init (GtkComboBox *combobox)
{
GTK_WIDGET_SET_FLAGS (combobox, GTK_CAN_FOCUS);
combobox->popdown = NULL;
combobox->menu_is_down = FALSE;
}
GtkWidget*
gtk_combo_box_new (GList *popdown_strings)
{
GtkWidget *retval = GTK_WIDGET (gtk_type_new (gtk_combo_box_get_type ()));
if(popdown_strings)
gtk_combo_box_set_popdown_strings(GTK_COMBO_BOX(retval), popdown_strings);
return retval;
}
GtkWidget*
gtk_combo_box_new_with_max_length (GList *popdown_strings,
guint16 max)
{
GtkWidget *retval;
retval = GTK_WIDGET(gtk_type_new (gtk_combo_box_get_type ()));
GTK_ENTRY(retval)->text_max_length = max;
if(popdown_strings)
gtk_combo_box_set_popdown_strings(GTK_COMBO_BOX(retval), popdown_strings);
return retval;
}
void
gtk_combo_box_set_popdown_strings(GtkComboBox *combobox,
GList *popdown_strings)
{
GList *t;
g_return_if_fail(combobox != NULL);
g_return_if_fail(popdown_strings != NULL);
if(combobox->popdown)
gtk_widget_destroy(combobox->popdown);
combobox->popdown = gtk_menu_new();
gtk_signal_connect(GTK_OBJECT(combobox->popdown),
"show",
GTK_SIGNAL_FUNC(gtk_combo_box_set_down),
combobox);
gtk_signal_connect(GTK_OBJECT(combobox->popdown),
"hide",
GTK_SIGNAL_FUNC(gtk_combo_box_set_up),
combobox);
for(t = popdown_strings; t; t = t->next)
{
GtkWidget *mitem;
mitem = gtk_menu_item_new_with_label(t->data);
gtk_widget_show(mitem);
gtk_menu_append(GTK_MENU(combobox->popdown), mitem);
gtk_signal_connect(GTK_OBJECT(mitem), "activate",
GTK_SIGNAL_FUNC(gtk_combo_box_item_activate),
combobox);
}
if(GTK_WIDGET_REALIZED(combobox))
gtk_widget_set_usize(combobox->popdown,
GTK_WIDGET(combobox)->requisition.width,
-1);
}
static void
gtk_combo_box_realize(GtkWidget *widget)
{
GtkComboBox *cb;
g_return_if_fail(widget != NULL);
g_return_if_fail(GTK_IS_COMBO_BOX(widget));
cb = GTK_COMBO_BOX(widget);
GTK_WIDGET_CLASS(parent_class)->realize(widget);
gdk_window_set_background (GTK_WIDGET(widget)->window,
&widget->style->bg[GTK_WIDGET_STATE(widget)]);
if(cb->popdown)
{
gtk_widget_set_usize(cb->popdown,
widget->requisition.width,
-1);
}
}
static void
gtk_combo_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COMBO_BOX (widget));
g_return_if_fail (requisition != NULL);
GTK_WIDGET_CLASS(parent_class)->size_request(widget, requisition);
requisition->width += ARROW_SIZE_X;
if(requisition->height < ARROW_SIZE_Y)
requisition->height = ARROW_SIZE_Y;
}
static void
gtk_combo_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkComboBox *cb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COMBO_BOX (widget));
g_return_if_fail (allocation != NULL);
cb = GTK_COMBO_BOX(widget);
widget->allocation = *allocation;
GTK_WIDGET_CLASS(parent_class)->size_allocate(widget, allocation);
#define INNER_BORDER 2
gdk_window_resize(GTK_ENTRY(widget)->text_area,
allocation->width - (widget->style->klass->xthickness + INNER_BORDER) * 2 - ARROW_SIZE_X,
widget->requisition.height - (widget->style->klass->ythickness + INNER_BORDER) * 2);
}
static void
gtk_combo_box_draw_arrow (GtkWidget *widget)
{
gint sx, sy;
sx = widget->allocation.width - ARROW_SIZE_X;
sy = ARROW_PADDING;
widget->style->klass->draw_arrow(widget->style,
widget->window,
GTK_WIDGET_STATE(widget),
GTK_SHADOW_OUT,
GTK_ARROW_DOWN, TRUE,
sx, sy,
ARROW_SIZE_X - ARROW_PADDING,
ARROW_SIZE_Y - ARROW_PADDING - 2);
}
static void
gtk_combo_box_draw (GtkWidget *widget,
GdkRectangle *area)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COMBO_BOX (widget));
g_return_if_fail (area != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
gtk_combo_box_draw_arrow(widget);
GTK_WIDGET_CLASS(parent_class)->draw(widget, area);
}
}
static gint
gtk_combo_box_expose (GtkWidget *widget,
GdkEventExpose *event)
{
gint retval;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
gtk_combo_box_draw_arrow(widget);
retval = GTK_WIDGET_CLASS(parent_class)->expose_event(widget, event);
return retval;
}
static void
gtk_combo_box_position_menu(GtkMenu *menu,
gint *x,
gint *y,
gpointer user_data)
{
GtkComboBox *cb;
GtkWidget *widget;
gint rootw, rooth, wy;
g_return_if_fail(user_data != NULL);
g_return_if_fail(GTK_IS_COMBO_BOX(user_data));
cb = GTK_COMBO_BOX(user_data);
widget = GTK_WIDGET(user_data);
gdk_window_get_origin(widget->window, x, &wy);
*y = wy + widget->allocation.height;
gdk_window_get_size(GDK_ROOT_PARENT(), &rootw, &rooth);
/* This check isn't perfect - what if the menu is too big to fit on
the screen going either up or down? *sigh* not a perfect
world, I guess */
if((*y + GTK_WIDGET(menu)->requisition.height) > rooth)
*y = wy - GTK_WIDGET(menu)->requisition.height;
}
static void
gtk_combo_box_set_down (GtkWidget *widget,
GtkComboBox *cb)
{
g_return_if_fail(GTK_IS_COMBO_BOX(cb));
cb->menu_is_down = TRUE;
}
static void
gtk_combo_box_set_up (GtkWidget *widget,
GtkComboBox *cb)
{
g_return_if_fail(GTK_IS_COMBO_BOX(cb));
cb->menu_is_down = FALSE;
}
static gint
gtk_combo_box_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkComboBox *cb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
cb = GTK_COMBO_BOX(widget);
if(event->window == widget->window
&& event->x > (widget->allocation.width - ARROW_SIZE_X)
&& event->x < widget->allocation.width
&& event->button == 1)
{
gtk_menu_popup(GTK_MENU(cb->popdown),
NULL, NULL,
gtk_combo_box_position_menu,
cb, event->button,
event->time);
return TRUE;
}
else
return GTK_WIDGET_CLASS(parent_class)->button_press_event(widget, event);
}
#if 0
static gint
gtk_combo_box_key_press (GtkWidget *widget,
GdkEventKey *event)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_ENTRY (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
return GTK_WIDGET_CLASS(parent_class)->key_press_event(widget, event);
}
#endif
static void
gtk_combo_box_destroy(GtkObject *object)
{
GtkComboBox *cb;
g_return_if_fail(GTK_IS_COMBO_BOX(object));
cb = GTK_COMBO_BOX(object);
if(cb->popdown)
gtk_widget_destroy(cb->popdown);
GTK_OBJECT_CLASS(parent_class)->destroy(object);
}
static void gtk_combo_box_item_activate(GtkWidget *widget,
GtkComboBox *cb)
{
char *newtext = GTK_LABEL(GTK_BIN(widget)->child)->label;
gtk_entry_set_text(GTK_ENTRY(cb), newtext);
}

66
gtk/gtkcombobox.h Normal file
View File

@ -0,0 +1,66 @@
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __GTK_COMBO_H__
#define __GTK_COMBO_H__
#include <gdk/gdk.h>
#include <gtk/gtkentry.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GTK_COMBO_BOX(obj) GTK_CHECK_CAST (obj, gtk_combo_box_get_type (), GtkComboBox)
#define GTK_COMBO_BOX_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_combo_box_get_type (), GtkComboBoxClass)
#define GTK_IS_COMBO_BOX(obj) GTK_CHECK_TYPE (obj, gtk_combo_box_get_type ())
typedef struct _GtkComboBox GtkComboBox;
typedef struct _GtkComboBoxClass GtkComboBoxClass;
struct _GtkComboBox
{
GtkEntry parent_widget;
GtkWidget *popdown;
gboolean menu_is_down;
};
struct _GtkComboBoxClass
{
GtkEntryClass parent_class;
};
guint gtk_combo_box_get_type (void);
/* These GList's should be lists of strings that should be placed
in the popdown menu */
GtkWidget* gtk_combo_box_new (GList *popdown_strings);
GtkWidget* gtk_combo_box_new_with_max_length (GList *popdown_strings,
guint16 max);
void gtk_combo_box_set_popdown_strings(GtkComboBox *combobox,
GList *popdown_strings);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GTK_ENTRY_H__ */

9
gtk/gtkmain.c
View File

@ -222,8 +222,13 @@ gtk_main_quit ()
done = TRUE;
}
gint gtk_main_iteration ()
{
return gtk_main_iteration_do(TRUE);
}
gint
gtk_main_iteration ()
gtk_main_iteration_do (gboolean blocking)
{
GtkWidget *event_widget;
GtkWidget *grab_widget;
@ -267,7 +272,7 @@ gtk_main_iteration ()
*/
gtk_handle_timer ();
event = gdk_event_get ();
if(blocking) event = gdk_event_get ();
}
/* "gdk_event_get" can return FALSE if the timer goes off

2
gtk/gtkmain.h
View File

@ -38,6 +38,8 @@ void gtk_main (void);
guint gtk_main_level (void);
void gtk_main_quit (void);
gint gtk_main_iteration (void);
/* gtk_main_iteration() calls gtk_main_iteration_do(TRUE) */
gint gtk_main_iteration_do (gboolean blocking);
gint gtk_true (void);
gint gtk_false (void);

17
gtk/testgtk.c
View File

@ -20,7 +20,6 @@
#include "gtk.h"
#include "../gdk/gdk.h"
#include "../gdk/gdkx.h"
#include "gtkhandlebox.h"
void
destroy_window (GtkWidget *widget,
@ -1346,12 +1345,16 @@ create_entry ()
GtkWidget *box1;
GtkWidget *box2;
GtkWidget *editable_check;
GtkWidget *entry;
GtkWidget *entry, *cb;
GtkWidget *button;
GtkWidget *separator;
GList *cbitems = NULL;
/* if (!window) */
if (!window)
{
cbitems = g_list_append(cbitems, "item1");
cbitems = g_list_append(cbitems, "item2");
cbitems = g_list_append(cbitems, "and item3");
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
@ -1376,13 +1379,19 @@ create_entry ()
gtk_widget_show (box2);
entry = gtk_entry_new ();
/* gtk_widget_set_usize (entry, 0, 25); */
gtk_entry_set_text (GTK_ENTRY (entry), "hello world");
gtk_entry_select_region (GTK_ENTRY (entry),
0, GTK_ENTRY(entry)->text_length);
gtk_box_pack_start (GTK_BOX (box2), entry, TRUE, TRUE, 0);
gtk_widget_show (entry);
cb = gtk_combo_box_new (cbitems);
gtk_entry_set_text (GTK_ENTRY (cb), "hello world");
gtk_entry_select_region (GTK_ENTRY (cb),
0, GTK_ENTRY(entry)->text_length);
gtk_box_pack_start (GTK_BOX (box2), cb, TRUE, TRUE, 0);
gtk_widget_show (cb);
editable_check = gtk_check_button_new_with_label("Editable");
gtk_box_pack_start (GTK_BOX (box2), editable_check, TRUE, TRUE, 0);
gtk_signal_connect (GTK_OBJECT(editable_check), "toggled",

17
tests/testgtk.c
View File

@ -20,7 +20,6 @@
#include "gtk.h"
#include "../gdk/gdk.h"
#include "../gdk/gdkx.h"
#include "gtkhandlebox.h"
void
destroy_window (GtkWidget *widget,
@ -1346,12 +1345,16 @@ create_entry ()
GtkWidget *box1;
GtkWidget *box2;
GtkWidget *editable_check;
GtkWidget *entry;
GtkWidget *entry, *cb;
GtkWidget *button;
GtkWidget *separator;
GList *cbitems = NULL;
/* if (!window) */
if (!window)
{
cbitems = g_list_append(cbitems, "item1");
cbitems = g_list_append(cbitems, "item2");
cbitems = g_list_append(cbitems, "and item3");
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_signal_connect (GTK_OBJECT (window), "destroy",
@ -1376,13 +1379,19 @@ create_entry ()
gtk_widget_show (box2);
entry = gtk_entry_new ();
/* gtk_widget_set_usize (entry, 0, 25); */
gtk_entry_set_text (GTK_ENTRY (entry), "hello world");
gtk_entry_select_region (GTK_ENTRY (entry),
0, GTK_ENTRY(entry)->text_length);
gtk_box_pack_start (GTK_BOX (box2), entry, TRUE, TRUE, 0);
gtk_widget_show (entry);
cb = gtk_combo_box_new (cbitems);
gtk_entry_set_text (GTK_ENTRY (cb), "hello world");
gtk_entry_select_region (GTK_ENTRY (cb),
0, GTK_ENTRY(entry)->text_length);
gtk_box_pack_start (GTK_BOX (box2), cb, TRUE, TRUE, 0);
gtk_widget_show (cb);
editable_check = gtk_check_button_new_with_label("Editable");
gtk_box_pack_start (GTK_BOX (box2), editable_check, TRUE, TRUE, 0);
gtk_signal_connect (GTK_OBJECT(editable_check), "toggled",