added this directory with stuff from the tutorial, updated to compile and

Mon Mar 23 12:03:03 CST 1998 Shawn T. Amundson <amundson@gtk.org>

        * examples/: added this directory with stuff from
          the tutorial, updated to compile and work with recent
          changes

1 files changed, 94 insertions, 0 deletions

diff --git a/examples/helloworld2/helloworld2.c b/examples/helloworld2/helloworld2.c
new file mode 100644
index 0000000000..6e1ea54ac4
--- /dev/null
+++ b/examples/helloworld2/helloworld2.c
@@ -0,0 +1,94 @@
+/* This file extracted from the GTK tutorial. */
+
+/* helloworld2.c */
+
+#include <gtk/gtk.h>
+   
+/* Our new improved callback.  The data passed to this function is printed
+ * to stdout. */
+void callback (GtkWidget *widget, gpointer *data)
+{  
+    g_print ("Hello again - %s was pressed\n", (char *) data);
+}
+     
+/* another callback */
+void delete_event (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);
+
+    /* this is a new call, this just sets the title of our
+     * new window to "Hello Buttons!" */
+    gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");
+
+    /* Here we just set a handler for delete_event that immediately
+     * exits GTK. */
+    gtk_signal_connect (GTK_OBJECT (window), "delete_event",
+                        GTK_SIGNAL_FUNC (delete_event), NULL);
+
+    
+    /* sets the border width of the window. */
+    gtk_container_border_width (GTK_CONTAINER (window), 10);
+
+    /* we create a box to pack widgets into.  this is described in detail
+     * in the "packing" section below.  The box is not really visible, it
+     * is just used as a tool to arrange widgets. */
+    box1 = gtk_hbox_new(FALSE, 0);
+
+    /* put the box into the main window. */
+    gtk_container_add (GTK_CONTAINER (window), box1);
+
+    /* creates a new button with the label "Button 1". */
+    button = gtk_button_new_with_label ("Button 1");
+    
+    /* Now when the button is clicked, we call the "callback" function
+     * with a pointer to "button 1" as it's argument */
+    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;
+}
+