/* * * Sample Code for Gtk+ Programming in C, 1st Edition, Prentice Hall * * Copyright 2000 - 2002 Syd Logan, All Rights Reserved * * This code is distributed without warranty. You are free to use this * code for any purpose, however, if this code is republished or * redistributed in its original form, as hardcopy or electronically, * then you must include this copyright notice along with the code. * * Questions or comments regarding this code or any bugs it contains can * be directed to the author via e-mail at slogan@cts.com **/#include <gtk/gtk.h>#include <stdio.h>intmain( int argc, char *argv[] ){	GtkWidget *widget;	GtkArg *args;	guint nArgs;	guint32 *flags = (guint32 *) NULL;	int i; 	gtk_set_locale (); 	gtk_init (&argc, &argv);	widget = gtk_button_new_with_label( "This is a test" );  args = gtk_object_query_args( gtk_button_get_type(), &flags, &nArgs );		if ( args == (GtkArg *) NULL ) {		fprintf( stderr, "Unable to query widget's args\n" );		exit( 1 );	}	for ( i = 0; i < nArgs; i++ ) {		printf( "Name: '%s', value: ", args[i].name );			if ( flags[i] == GTK_ARG_READABLE || flags[i] == GTK_ARG_READWRITE ) {			gtk_object_arg_get( GTK_OBJECT( widget ), &args[i], NULL );			switch( GTK_FUNDAMENTAL_TYPE (args[i].type) ) {			case GTK_TYPE_CHAR :				printf( "%c\n", GTK_VALUE_CHAR (args[i]) );				break;				case GTK_TYPE_UCHAR :				printf( "%c\n", GTK_VALUE_UCHAR (args[i]) );				break;				case GTK_TYPE_BOOL :				printf( "%s\n", (GTK_VALUE_BOOL(args[i])==TRUE?  "TRUE":"FALSE"));				break;				case GTK_TYPE_INT :				printf( "%d\n", GTK_VALUE_INT (args[i]) );				break;				case GTK_TYPE_UINT :				printf( "%u\n", GTK_VALUE_UINT (args[i]) );				break;				case GTK_TYPE_LONG :				printf( "%ld\n", GTK_VALUE_LONG (args[i]) );				break;				case GTK_TYPE_ULONG :				printf( "%lu\n", GTK_VALUE_ULONG (args[i]) );				break;				case GTK_TYPE_FLOAT :				printf( "%f\n", GTK_VALUE_FLOAT (args[i]) );				break;				case GTK_TYPE_DOUBLE :				printf( "%lf\n", GTK_VALUE_DOUBLE (args[i]) );				break;				case GTK_TYPE_STRING :				{ 				  GtkArg arg;				  printf( "%s\n", GTK_VALUE_STRING (args[i]) );				  g_free (GTK_VALUE_STRING (args[i]));				  GTK_VALUE_STRING(args[i]) = "Yabba Dabba Doo";				  gtk_object_setv( GTK_OBJECT( widget ), 1, &args[i] );				  gtk_object_arg_get( GTK_OBJECT( widget ), &args[i], NULL );				  printf( "%s\n", GTK_VALUE_STRING (args[i]) );				  g_free(GTK_VALUE_STRING (args[i]));				  arg.type = GTK_TYPE_STRING;				  arg.name = "GtkButton::label";				  GTK_VALUE_STRING(arg) = "Hey Wilma!";				  gtk_object_setv( GTK_OBJECT( widget ), 1, &arg );				  gtk_object_arg_get( GTK_OBJECT( widget ), &arg, NULL );				  printf( "%s\n", GTK_VALUE_STRING (arg) );				  g_free (GTK_VALUE_STRING (arg));				  gtk_object_set( GTK_OBJECT( widget ),					  "GtkButton::label", "My friend Barney", NULL );				  gtk_object_arg_get( GTK_OBJECT( widget ), &arg, NULL );				  printf( "%s\n", GTK_VALUE_STRING (arg) );				  g_free (GTK_VALUE_STRING (arg));				}				break;				case GTK_TYPE_ENUM :				printf( "%d\n", GTK_VALUE_ENUM (args[i]) );				break;				case GTK_TYPE_FLAGS :				printf( "%xd\n", GTK_VALUE_FLAGS (args[i]) );				break;				case GTK_TYPE_BOXED :				printf( "%x\n", GTK_VALUE_BOXED (args[i]) );				break;				case GTK_TYPE_POINTER :				printf( "%x\n", GTK_VALUE_POINTER (args[i]) );				break;				case GTK_TYPE_INVALID:				printf( "Attribute is invalid\n" );				break;			case GTK_TYPE_NONE:				printf( "Attribute is none\n" );				break;			default:				break;			}			}	}	/* not really needed, as we are exiting */	if ( flags )		g_free( flags );	if ( args )		g_free( args );			return( 0 );}