GTK入门导引

void gtk_signal_disconnect (GtkObject *object,
gint id);

gtk_signal_disconnect_by_data (GtkObject *object,
gpointer data);

gtk_signal_handlers_destroy (GtkObject *object);

#include <gtk/gtk.h>
/* 新改进的callback.输入到该函数的资料被输出到. */
void callback (GtkWidget *widget, gpointer *data)
{
g_print ("Hello again - %s was pressed
", (char *) data);
}
/* another callback */
void destroy (GtkWidget *widget, gpointer *data)
{
gtk_main_quit ();
}
int main (int argc, char *argv[])
{
/* GtkWidget is the storage type for widgets */
GtkWidget *window;
GtkWidget *button;
GtkWidget *box1;
/* this is called in all GTK applications.arguments are parsed from
 * the command line and are returned to the application. */
gtk_init (&argc, &argv);
/* create a new window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* 这是个新函数, 它设定title到新视窗上"Hello Buttons!" */
gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");
/* 用这样会比较简单一点. */
gtk_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (destroy), NULL);
/* 设定边框宽度. */
gtk_container_border_width (GTK_CONTAINER (window), 10);
/* 我们产生一个box来封装物件.这一点会在"packing"详述.
这个box实际上看不见, 它只是用来当成是个工具来安排物件 */
box1 = gtk_hbox_new(FALSE, 0);
/* 将box放到主视窗中. */
gtk_container_add (GTK_CONTAINER (window), box1);
/* 产生一个新按钮并带有标签"Button 1". */
button = gtk_button_new_with_label ("Button 1");
/* 当按钮被按下的时候, 我们呼叫"callback"函数
 * 并以其指标做为参数送到"button 1" */
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (callback), (gpointer) "button 1");
/* instead of gtk_container_add, we pack this button into the invisible
 * box, which has been packed into the window. */
gtk_box_pack_start(GTK_BOX(box1), button, TRUE, TRUE, 0);
/* always remember this step, this tells GTK that our preparation for
 * this button is complete, and it can be displayed now. */
gtk_widget_show(button);
/* do these same steps again to create a second button */
button = gtk_button_new_with_label ("Button 2");
/* call the same callback function with a different argument,
 * passing a pointer to "button 2" instead. */
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (callback), (gpointer) "button 2");
gtk_box_pack_start(GTK_BOX(box1), button, TRUE, TRUE, 0);
/* The order in which we show the buttons is not really important, but I
 * recommend showing the window last, so it all pops up at once. */
gtk_widget_show(button);
gtk_widget_show(box1);
gtk_widget_show (window);
/* rest in gtk_main and wait for the fun to begin! */
gtk_main ();
return 0;
}