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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<title>
The Main Window: GnomeApp
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<div class="CHAPTER">
<h1>
<a name="CHA-MAIN">The Main Window: <tt class="CLASSNAME">
GnomeApp</tt></a>
</h1>
<div class="TOC">
<dl>
<dt>
<b>Table of Contents</b>
</dt>
<dt>
<a href="cha-main.html#SEC-GNOMEAPP">The <tt class=
"CLASSNAME">GnomeApp</tt> Widget</a>
</dt>
<dt>
<a href="sec-gnomeuiinfo.html">Menus and Toolbars with
<span class="STRUCTNAME">GnomeUIInfo</span></a>
</dt>
<dt>
<a href="z91.html">Adding a Status Bar</a>
</dt>
<dt>
<a href="sec-help.html">Online Help</a>
</dt>
<dt>
<a href="z94.html">Finishing Touches</a>
</dt>
</dl>
</div>
<p>
This chapter describes Gnome's features for creating your
application's main window, complete with menus and a
toolbar.
</p>
<div class="SECT1">
<h1 class="SECT1">
<a name="SEC-GNOMEAPP">The <tt class="CLASSNAME">
GnomeApp</tt> Widget</a>
</h1>
<p>
All Gnome applications, excluding a few with special
needs, use the <tt class="CLASSNAME">GnomeApp</tt> widget
for their main window. <tt class="CLASSNAME">
GnomeApp</tt> is a subclass of <tt class="CLASSNAME">
GtkWindow</tt>; it extends the basic toplevel window with
convenient menu and toolbar handling. A <tt class=
"CLASSNAME">GnomeApp</tt> window is automatically
user-configurable in several ways:
</p>
<ul>
<li>
<p>
Menu and toolbars can be detached from the window, or
rearranged in relation to one another and the main
window contents.
</p>
</li>
<li>
<p>
Users can elect to disable detachable bars for all
Gnome applications.
</p>
</li>
<li>
<p>
Users can choose whether to have small icons in the
application's menus.
</p>
</li>
</ul>
<p>
More options will probably be added in the future.
</p>
<div class="FIGURE">
<a name="Z88"></a>
<p>
<img src="figures/gnumeric.png">
</p>
<p>
<b>Figure 1. The Gnumeric spreadsheet, which uses the
<tt class="CLASSNAME">GnomeApp</tt> widget</b>
</p>
</div>
<p>
<tt class="CLASSNAME">GnomeApp</tt> has the usual
constructor function, shown in <a href=
"cha-main.html#FL-GNOMEAPPNEW">Figure 2</a>. The first
argument, <span class="STRUCTNAME">app_id</span>, is an
internal name Gnome can use to work with this
application. It should be the same as the <span class=
"STRUCTNAME">app_id</span> passed to <tt class=
"FUNCTION">gnome_init()</tt>; the name of the executable
is a good choice. The second argument is simply a title
for the application window; if you use <tt class=
"FUNCTION">NULL</tt> here, the title will not be set.
</p>
<div class="FIGURE">
<a name="FL-GNOMEAPPNEW"></a>
<div class="FUNCSYNOPSIS">
<a name="FL-GNOMEAPPNEW.SYNOPSIS"></a>
<table border="0" bgcolor="#E0E0E0" width="100%">
<tr>
<td>
<pre class="FUNCSYNOPSISINFO">
#include <libgnomeui/gnome-app.h>
</pre>
</td>
</tr>
</table>
<p>
<code><code class="FUNCDEF">GtkWidget* <tt class=
"FUNCTION">gnome_app_new</tt></code>(gchar* <tt
class="PARAMETER"><i>app_id</i></tt>, gchar* <tt
class="PARAMETER"><i>title</i></tt>);</code>
</p>
</div>
<p>
<b>Figure 2. <tt class="CLASSNAME">GnomeApp</tt>
Constructor</b>
</p>
</div>
<p>
<tt class="CLASSNAME">GnomeApp</tt> has a single "content
area" in the center, where you place the main
functionality of your application. On all four sides of
this central area, you can add toolbars, menubars, and
statusbars. <a href="cha-main.html#GNOMEAPP-CONTENTS">
Figure 3</a> lists the relevant functions.
</p>
<p>
These functions should be self-explanatory. They simply
install the widget you give them in the appropriate place
on the <tt class="CLASSNAME">GnomeApp</tt>. There are
easy ways to create the menubar, toolbar, and statusbar;
the remainder of this chapter describes them.
</p>
<div class="FIGURE">
<a name="GNOMEAPP-CONTENTS"></a>
<div class="FUNCSYNOPSIS">
<a name="GNOMEAPP-CONTENTS.SYNOPSIS"></a>
<table border="0" bgcolor="#E0E0E0" width="100%">
<tr>
<td>
<pre class="FUNCSYNOPSISINFO">
#include <libgnomeui/gnome-app.h>
</pre>
</td>
</tr>
</table>
<p>
<code><code class="FUNCDEF">void <tt class=
"FUNCTION">
gnome_app_set_contents</tt></code>(GnomeApp* <tt
class="PARAMETER"><i>app</i></tt>, GtkWidget* <tt
class="PARAMETER"><i>contents</i></tt>);</code>
</p>
<p>
<code><code class="FUNCDEF">void <tt class=
"FUNCTION">gnome_app_set_menus</tt></code>(GnomeApp*
<tt class="PARAMETER"><i>app</i></tt>, GtkMenuBar*
<tt class="PARAMETER"><i>menubar</i></tt>);</code>
</p>
<p>
<code><code class="FUNCDEF">void <tt class=
"FUNCTION">
gnome_app_set_toolbar</tt></code>(GnomeApp* <tt
class="PARAMETER"><i>app</i></tt>, GtkToolbar* <tt
class="PARAMETER"><i>toolbar</i></tt>);</code>
</p>
<p>
<code><code class="FUNCDEF">void <tt class=
"FUNCTION">
gnome_app_set_statusbar</tt></code>(GnomeApp* <tt
class="PARAMETER"><i>app</i></tt>, GtkWidget* <tt
class="PARAMETER"><i>statusbar</i></tt>);</code>
</p>
</div>
<p>
<b>Figure 3. Adding Widgets to <tt class="CLASSNAME">
GnomeApp</tt></b>
</p>
</div>
</div>
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