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| author | Leo Tenenbaum <pommicket@gmail.com> | 2018-08-20 21:12:06 -0400 |
|---|---|---|
| committer | Leo Tenenbaum <pommicket@gmail.com> | 2018-08-20 21:12:06 -0400 |
| commit | 63e87c2d0c9d263f14c77b68f85c67d46ece82a9 (patch) | |
| tree | 6260365cbf7d24f37d27669e8538227fcb72e243 /gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html | |
| parent | a4460f6d9453bbd7e584937686449cef3e19f052 (diff) | |
Diffstat (limited to 'gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html')
| -rw-r--r-- | gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html b/gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html deleted file mode 100644 index f3c2792..0000000 --- a/gtk+-mingw/share/gtk-doc/html/gobject/howto-interface-implement.html +++ /dev/null @@ -1,140 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> -<html> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> -<title>How to implement an interface</title> -<meta name="generator" content="DocBook XSL Stylesheets V1.76.1"> -<link rel="home" href="index.html" title="GObject Reference Manual"> -<link rel="up" href="howto-interface.html" title="How to define and implement interfaces"> -<link rel="prev" href="howto-interface.html" title="How to define and implement interfaces"> -<link rel="next" href="howto-interface-prerequisite.html" title="Interface definition prerequisites"> -<meta name="generator" content="GTK-Doc V1.18 (XML mode)"> -<link rel="stylesheet" href="style.css" type="text/css"> -</head> -<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> -<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"> -<td><a accesskey="p" href="howto-interface.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td> -<td><a accesskey="u" href="howto-interface.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td> -<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td> -<th width="100%" align="center">GObject Reference Manual</th> -<td><a accesskey="n" href="howto-interface-prerequisite.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td> -</tr></table> -<div class="sect1"> -<div class="titlepage"><div><div><h2 class="title" style="clear: both"> -<a name="howto-interface-implement"></a>How to implement an interface</h2></div></div></div> -<p> - Once the interface is defined, implementing it is rather trivial. - </p> -<p> - The first step is to define a normal GObject class, like: -</p> -<pre class="programlisting"> -#ifndef __MAMAN_BAZ_H__ -#define __MAMAN_BAZ_H__ - -#include <glib-object.h> - -#define MAMAN_TYPE_BAZ (maman_baz_get_type ()) -#define MAMAN_BAZ(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), MAMAN_TYPE_BAZ, Mamanbaz)) -#define MAMAN_IS_BAZ(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), MAMAN_TYPE_BAZ)) -#define MAMAN_BAZ_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), MAMAN_TYPE_BAZ, MamanbazClass)) -#define MAMAN_IS_BAZ_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), MAMAN_TYPE_BAZ)) -#define MAMAN_BAZ_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), MAMAN_TYPE_BAZ, MamanbazClass)) - - -typedef struct _MamanBaz MamanBaz; -typedef struct _MamanBazClass MamanBazClass; - -struct _MamanBaz -{ - GObject parent_instance; - - int instance_member; -}; - -struct _MamanBazClass -{ - GObjectClass parent_class; -}; - -GType maman_baz_get_type (void); - -#endif /* __MAMAN_BAZ_H__ */ -</pre> -<p> - - There is clearly nothing specifically weird or scary about this header: - it does not define any weird API or derive from a weird type. - </p> -<p> - The second step is to implement <span class="type">MamanBaz</span> by defining - its GType. Instead of using - <code class="function"><a class="link" href="gobject-Type-Information.html#G-DEFINE-TYPE:CAPS" title="G_DEFINE_TYPE()">G_DEFINE_TYPE</a></code> - we use - <code class="function"><a class="link" href="gobject-Type-Information.html#G-DEFINE-TYPE-WITH-CODE:CAPS" title="G_DEFINE_TYPE_WITH_CODE()">G_DEFINE_TYPE_WITH_CODE</a></code> - and the - <code class="function"><a class="link" href="gobject-Type-Information.html#G-IMPLEMENT-INTERFACE:CAPS" title="G_IMPLEMENT_INTERFACE()">G_IMPLEMENT_INTERFACE</a></code> - macros. -</p> -<pre class="programlisting"> -static void maman_ibaz_interface_init (MamanIbazInterface *iface); - -G_DEFINE_TYPE_WITH_CODE (MamanBar, maman_bar, G_TYPE_OBJECT, - G_IMPLEMENT_INTERFACE (MAMAN_TYPE_IBAZ, - maman_ibaz_interface_init)); -</pre> -<p> - This definition is very much like all the similar functions we looked - at previously. The only interface-specific code present here is the call to - <code class="function"><a class="link" href="gobject-Type-Information.html#G-IMPLEMENT-INTERFACE:CAPS" title="G_IMPLEMENT_INTERFACE()">G_IMPLEMENT_INTERFACE</a></code>. - </p> -<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"> -<h3 class="title">Note</h3> -<p>Classes can implement multiple interfaces by using multiple calls to - <code class="function"><a class="link" href="gobject-Type-Information.html#G-IMPLEMENT-INTERFACE:CAPS" title="G_IMPLEMENT_INTERFACE()">G_IMPLEMENT_INTERFACE</a></code> - inside the call to - <code class="function"><a class="link" href="gobject-Type-Information.html#G-DEFINE-TYPE-WITH-CODE:CAPS" title="G_DEFINE_TYPE_WITH_CODE()">G_DEFINE_TYPE_WITH_CODE</a></code> - </p> -</div> -<p> - <code class="function">maman_baz_interface_init</code>, the interface - initialization function: inside it every virtual method of the interface - must be assigned to its implementation: -</p> -<pre class="programlisting"> -static void -maman_baz_do_action (MamanBaz *self) -{ - g_print ("Baz implementation of Ibaz interface Action: 0x%x.\n", - self->instance_member); -} - -static void -maman_baz_do_something (MamanBaz *self) -{ - g_print ("Baz implementation of Ibaz interface Something: 0x%x.\n", - self->instance_member); -} - -static void -maman_ibaz_interface_init (MamanIbazInterface *iface) -{ - iface->do_action = maman_baz_do_action; - iface->do_something = maman_baz_do_something; -} - -static void -maman_baz_init (MamanBaz *self) -{ - MamanBaz *self = MAMAN_BAZ (instance); - self->instance_member = 0xdeadbeaf; -} -</pre> -<p> - </p> -</div> -<div class="footer"> -<hr> - Generated by GTK-Doc V1.18</div> -</body> -</html>
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