Commit ceeaf183 authored by Matthias Clasen's avatar Matthias Clasen
Browse files

Add a packing example to the tutorial

parent ce1244fd
......@@ -116,4 +116,35 @@
</example>
</section>
<section>
<title>Packing</title>
<para>When creating an application, you'll want to put more than one widget
inside a window. Our first helloworld example only used one widget so we
could simply use a gtk_container_add() call to "pack" the widget into the
window. But when you want to put more than one widget into a window, it
it becomes important to control how each widget is positioned and sized.
This is where packing comes in.</para>
<para>GTK+ comes with a large variety of <firstterm>layout containers</firstterm>
whose purpose it is to control the layout of the child widgets that are
added to them. See <xref linkend="LayoutContainers"/> for an overview.</para>
<para>The following example shows how the GtkGrid container lets you
arrange several buttons:</para>
<para>
<inlinegraphic fileref="grid-packing.png" format="PNG"></inlinegraphic>
</para>
<example id="gtk-getting-started-grid-packing">
<title>Packing buttons</title>
<programlisting>
<xi:include href="../../../../examples/grid-packing.c" parse="text">
<xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
</xi:include>
</programlisting>
</example>
</section>
</chapter>
......@@ -48,4 +48,4 @@ LDADD = \
$(top_builddir)/gtk/libgtk-3.0.la \
$(GTK_DEP_LIBS)
noinst_PROGRAMS = hello-world window-default bloatpad
noinst_PROGRAMS = hello-world window-default bloatpad grid-packing
#include <gtk/gtk.h>
static void
print_hello (GtkWidget *widget,
gpointer data)
{
g_print ("Hello World\n");
}
int
main (int argc,
char *argv[])
{
GtkWidget *window;
GtkWidget *grid;
GtkWidget *button;
/* 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, and set its title */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Grid");
g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
/* Here we construct the container that is going pack our buttons */
grid = gtk_grid_new ();
/* Pack the container in the window */
gtk_container_add (GTK_CONTAINER (window), grid);
button = gtk_button_new_with_label ("Button 1");
g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
/* Place the first button in the grid cell (0, 0), and make it fill
* just 1 cell horizontally and vertically (ie no spanning)
*/
gtk_grid_attach (GTK_GRID (grid), button, 0, 0, 1, 1);
button = gtk_button_new_with_label ("Button 2");
g_signal_connect (button, "clicked", G_CALLBACK (print_hello), NULL);
/* Place the second button in the grid cell (1, 0), and make it fill
* just 1 cell horizontally and vertically (ie no spanning)
*/
gtk_grid_attach (GTK_GRID (grid), button, 1, 0, 1, 1);
button = gtk_button_new_with_label ("Quit");
g_signal_connect (button, "clicked", G_CALLBACK (gtk_main_quit), NULL);
/* Place the Quit button in the grid cell (0, 1), and make it
* span 2 columns.
*/
gtk_grid_attach (GTK_GRID (grid), button, 0, 1, 2, 1);
/* Now that we are done packing our widgets, we show them all
* in one go, by calling gtk_widget_show_all() on the window.
* This call recursively calls gtk_widget_show() on all widgets
* that are contained in the window, directly or indirectly.
*/
gtk_widget_show_all (window);
/* All GTK applications must have a gtk_main(). Control ends here
* and waits for an event to occur (like a key press or a mouse event),
* until gtk_main_quit() is called.
*/
gtk_main ();
return 0;
}
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