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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><HTML><HEAD> <META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9"> <TITLE>GTK v1.2 Tutorial: Code Examples</TITLE> <LINK HREF="gtk_tut-31.html" REL=next> <LINK HREF="gtk_tut-29.html" REL=previous> <LINK HREF="gtk_tut.html#toc30" REL=contents></HEAD><BODY BGCOLOR="#FFFFFF"><A HREF="gtk_tut-31.html">Next</A><A HREF="gtk_tut-29.html">Previous</A><A HREF="gtk_tut.html#toc30">Contents</A><HR NOSHADE><H2><A NAME="s30">30. Code Examples</A></H2><P>Below are the code examples that are used in the above textwhich are not included in complete form elsewhere.<P><H2><A NAME="ss30.1">30.1 Tictactoe</A></H2><H3>tictactoe.h</H3><P><BLOCKQUOTE><CODE><PRE>/* example-start tictactoe tictactoe.h *//* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */#ifndef __TICTACTOE_H__#define __TICTACTOE_H__#include <gdk/gdk.h>#include <gtk/gtkvbox.h>#ifdef __cplusplusextern "C" {#endif /* __cplusplus */#define TICTACTOE(obj) GTK_CHECK_CAST (obj, tictactoe_get_type (), Tictactoe)#define TICTACTOE_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, tictactoe_get_type (), TictactoeClass)#define IS_TICTACTOE(obj) GTK_CHECK_TYPE (obj, tictactoe_get_type ())typedef struct _Tictactoe Tictactoe;typedef struct _TictactoeClass TictactoeClass;struct _Tictactoe{ GtkVBox vbox; GtkWidget *buttons[3][3];};struct _TictactoeClass{ GtkVBoxClass parent_class; void (* tictactoe) (Tictactoe *ttt);};guint tictactoe_get_type (void);GtkWidget* tictactoe_new (void);void tictactoe_clear (Tictactoe *ttt);#ifdef __cplusplus}#endif /* __cplusplus */#endif /* __TICTACTOE_H__ *//* example-end */</PRE></CODE></BLOCKQUOTE><P><H3>tictactoe.c</H3><P><BLOCKQUOTE><CODE><PRE>/* example-start tictactoe tictactoe.c *//* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */#include "gtk/gtksignal.h"#include "gtk/gtktable.h"#include "gtk/gtktogglebutton.h"#include "tictactoe.h"enum { TICTACTOE_SIGNAL, LAST_SIGNAL};static void tictactoe_class_init (TictactoeClass *klass);static void tictactoe_init (Tictactoe *ttt);static void tictactoe_toggle (GtkWidget *widget, Tictactoe *ttt);static gint tictactoe_signals[LAST_SIGNAL] = { 0 };guinttictactoe_get_type (){ static guint ttt_type = 0; if (!ttt_type) { GtkTypeInfo ttt_info = { "Tictactoe", sizeof (Tictactoe), sizeof (TictactoeClass), (GtkClassInitFunc) tictactoe_class_init, (GtkObjectInitFunc) tictactoe_init, (GtkArgSetFunc) NULL, (GtkArgGetFunc) NULL }; ttt_type = gtk_type_unique (gtk_vbox_get_type (), &ttt_info); } return ttt_type;}static voidtictactoe_class_init (TictactoeClass *class){ GtkObjectClass *object_class; object_class = (GtkObjectClass*) class; tictactoe_signals[TICTACTOE_SIGNAL] = gtk_signal_new ("tictactoe", GTK_RUN_FIRST, object_class->type, GTK_SIGNAL_OFFSET (TictactoeClass, tictactoe), gtk_signal_default_marshaller, GTK_TYPE_NONE, 0); gtk_object_class_add_signals (object_class, tictactoe_signals, LAST_SIGNAL); class->tictactoe = NULL;}static voidtictactoe_init (Tictactoe *ttt){ GtkWidget *table; gint i,j; table = gtk_table_new (3, 3, TRUE); gtk_container_add (GTK_CONTAINER(ttt), table); gtk_widget_show (table); for (i=0;i<3; i++) for (j=0;j<3; j++) { ttt->buttons[i][j] = gtk_toggle_button_new (); gtk_table_attach_defaults (GTK_TABLE(table), ttt->buttons[i][j], i, i+1, j, j+1); gtk_signal_connect (GTK_OBJECT (ttt->buttons[i][j]), "toggled", GTK_SIGNAL_FUNC (tictactoe_toggle), ttt); gtk_widget_set_usize (ttt->buttons[i][j], 20, 20); gtk_widget_show (ttt->buttons[i][j]); }}GtkWidget*tictactoe_new (){ return GTK_WIDGET ( gtk_type_new (tictactoe_get_type ()));}void tictactoe_clear (Tictactoe *ttt){ int i,j; for (i=0;i<3;i++) for (j=0;j<3;j++) { gtk_signal_handler_block_by_data (GTK_OBJECT(ttt->buttons[i][j]), ttt); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ttt->buttons[i][j]), FALSE); gtk_signal_handler_unblock_by_data (GTK_OBJECT(ttt->buttons[i][j]), ttt); }}static voidtictactoe_toggle (GtkWidget *widget, Tictactoe *ttt){ int i,k; static int rwins[8][3] = { { 0, 0, 0 }, { 1, 1, 1 }, { 2, 2, 2 }, { 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 } }; static int cwins[8][3] = { { 0, 1, 2 }, { 0, 1, 2 }, { 0, 1, 2 }, { 0, 0, 0 }, { 1, 1, 1 }, { 2, 2, 2 }, { 0, 1, 2 }, { 2, 1, 0 } }; int success, found; for (k=0; k<8; k++) { success = TRUE; found = FALSE; for (i=0;i<3;i++) { success = success && GTK_TOGGLE_BUTTON(ttt->buttons[rwins[k][i]][cwins[k][i]])->active; found = found || ttt->buttons[rwins[k][i]][cwins[k][i]] == widget; } if (success && found) { gtk_signal_emit (GTK_OBJECT (ttt), tictactoe_signals[TICTACTOE_SIGNAL]); break; } }}/* example-end */</PRE></CODE></BLOCKQUOTE><P><H3>ttt_test.c</H3><P><BLOCKQUOTE><CODE><PRE>/* example-start tictactoe ttt_test.c */#include <gtk/gtk.h>#include "tictactoe.h"voidwin (GtkWidget *widget, gpointer data){ g_print ("Yay!\n"); tictactoe_clear (TICTACTOE (widget));}int main (int argc, char *argv[]){ GtkWidget *window; GtkWidget *ttt; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title (GTK_WINDOW (window), "Aspect Frame"); gtk_signal_connect (GTK_OBJECT (window), "destroy", GTK_SIGNAL_FUNC (gtk_exit), NULL); gtk_container_set_border_width (GTK_CONTAINER (window), 10); ttt = tictactoe_new (); gtk_container_add (GTK_CONTAINER (window), ttt); gtk_widget_show (ttt); gtk_signal_connect (GTK_OBJECT (ttt), "tictactoe", GTK_SIGNAL_FUNC (win), NULL); gtk_widget_show (window); gtk_main (); return 0;}/* example-end */</PRE></CODE></BLOCKQUOTE><P><H2><A NAME="ss30.2">30.2 GtkDial</A></H2><H3>gtkdial.h</H3><P><BLOCKQUOTE><CODE><PRE>/* example-start gtkdial gtkdial.h *//* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */#ifndef __GTK_DIAL_H__#define __GTK_DIAL_H__#include <gdk/gdk.h>#include <gtk/gtkadjustment.h>#include <gtk/gtkwidget.h>#ifdef __cplusplusextern "C" {#endif /* __cplusplus */#define GTK_DIAL(obj) GTK_CHECK_CAST (obj, gtk_dial_get_type (), GtkDial)#define GTK_DIAL_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_dial_get_type (), GtkDialClass)#define GTK_IS_DIAL(obj) GTK_CHECK_TYPE (obj, gtk_dial_get_type ())typedef struct _GtkDial GtkDial;typedef struct _GtkDialClass GtkDialClass;struct _GtkDial{ GtkWidget widget; /* update policy (GTK_UPDATE_[CONTINUOUS/DELAYED/DISCONTINUOUS]) */ guint policy : 2; /* Button currently pressed or 0 if none */ guint8 button; /* Dimensions of dial components */ gint radius; gint pointer_width; /* ID of update timer, or 0 if none */ guint32 timer; /* Current angle */ gfloat angle; /* Old values from adjustment stored so we know when something changes */ gfloat old_value; gfloat old_lower; gfloat old_upper; /* The adjustment object that stores the data for this dial */ GtkAdjustment *adjustment;};struct _GtkDialClass{ GtkWidgetClass parent_class;};GtkWidget* gtk_dial_new (GtkAdjustment *adjustment);guint gtk_dial_get_type (void);GtkAdjustment* gtk_dial_get_adjustment (GtkDial *dial);void gtk_dial_set_update_policy (GtkDial *dial, GtkUpdateType policy);void gtk_dial_set_adjustment (GtkDial *dial, GtkAdjustment *adjustment);#ifdef __cplusplus}#endif /* __cplusplus */#endif /* __GTK_DIAL_H__ *//* example-end */</PRE></CODE></BLOCKQUOTE><P><H3>gtkdial.c</H3><P><BLOCKQUOTE><CODE><PRE>/* example-start gtkdial gtkdial.c *//* 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */#include <math.h>#include <stdio.h>#include <gtk/gtkmain.h>#include <gtk/gtksignal.h>#include "gtkdial.h"#define SCROLL_DELAY_LENGTH 300#define DIAL_DEFAULT_SIZE 100/* Forward declarations */static void gtk_dial_class_init (GtkDialClass *klass);static void gtk_dial_init (GtkDial *dial);static void gtk_dial_destroy (GtkObject *object);static void gtk_dial_realize (GtkWidget *widget);static void gtk_dial_size_request (GtkWidget *widget, GtkRequisition *requisition);static void gtk_dial_size_allocate (GtkWidget *widget, GtkAllocation *allocation);static gint gtk_dial_expose (GtkWidget *widget, GdkEventExpose *event);static gint gtk_dial_button_press (GtkWidget *widget, GdkEventButton *event);static gint gtk_dial_button_release (GtkWidget *widget, GdkEventButton *event);static gint gtk_dial_motion_notify (GtkWidget *widget, GdkEventMotion *event);static gint gtk_dial_timer (GtkDial *dial);static void gtk_dial_update_mouse (GtkDial *dial, gint x, gint y);static void gtk_dial_update (GtkDial *dial);static void gtk_dial_adjustment_changed (GtkAdjustment *adjustment, gpointer data);static void gtk_dial_adjustment_value_changed (GtkAdjustment *adjustment, gpointer data);/* Local data */static GtkWidgetClass *parent_class = NULL;guintgtk_dial_get_type (){ static guint dial_type = 0; if (!dial_type) { GtkTypeInfo dial_info = { "GtkDial", sizeof (GtkDial), sizeof (GtkDialClass), (GtkClassInitFunc) gtk_dial_class_init, (GtkObjectInitFunc) gtk_dial_init, (GtkArgSetFunc) NULL, (GtkArgGetFunc) NULL, }; dial_type = gtk_type_unique (gtk_widget_get_type (), &dial_info); } return dial_type;}static voidgtk_dial_class_init (GtkDialClass *class){ GtkObjectClass *object_class; GtkWidgetClass *widget_class; object_class = (GtkObjectClass*) class; widget_class = (GtkWidgetClass*) class; parent_class = gtk_type_class (gtk_widget_get_type ()); object_class->destroy = gtk_dial_destroy; widget_class->realize = gtk_dial_realize; widget_class->expose_event = gtk_dial_expose; widget_class->size_request = gtk_dial_size_request;⌨️ 快捷键说明
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