Writing Reggae classes - Revision history

Krashan: /* Public Reggae classes */ Added dead link to Shared library

2010-10-12T19:43:01Z

‎Public Reggae classes: Added dead link to Shared library

Krashan at 19:40, 12 October 2010

2010-10-12T19:40:26Z

Krashan: Contents.

2010-10-12T19:39:14Z

Contents.

New page

''Grzegorz Kraszewski''

Reggae functionality can be extended by adding classes to it. New classes may be either public or private.

==Private Reggae classes==

Private classes are simple. They are statically linked with an application and may be only used in this single application. A private Reggae class is just a BOOPSI class derived from ''multimedia.class'' and implementing the standard set of Reggae methods. The class is created with ''MakeClass()'' and later referenced by pointer.

==Public Reggae classes==

A public Reggae class is more complicated. It is a separate disk based component, which may be loaded by any application. Public classes use shared library framework, so they are just a special case of MorphOS shared libraries. The differencies are as follows:

* Public Reggae class has no shared library API, except of standard open, close and expunge vectors.
* The class creates a named BOOPSI class at first open with ''MakeClass()'' and adds it to the system list with ''AddClass()''. Then the class can be used by multiple applications (the code is shared) and is referenced by name, similarly to an ordinary shared library.

The following example shows the difference in creating objects of public and private class:

<tt>Object *pub, *priv;<br><br>priv = NewObject(PrivClassPointer, NULL, /* tags */, TAG_END);<br>pub = NewObject(NULL, "public.class", /* tags */, TAG_END);</tt>

Of course a public class has to be opened with ''OpenLibrary()'' before use (see [[Reggae_tutorial:_Accessing_Reggae_in_applications#Opening and closing individual classes|opening and closing individual classes]]) and closed when no longer used.

@@ Line 10: / Line 10: @@
 ==Public Reggae classes==
-A public Reggae class is more complicated. It is a separate disk based component, which may be loaded by any application. Public classes use shared library framework, so they are just a special case of MorphOS shared libraries. The differencies are as follows:
+A public Reggae class is more complicated. It is a separate disk based component, which may be loaded by any application. Public classes use shared library framework, so they are just a special case of MorphOS [[Shared library|shared libraries]]. The differencies are as follows:
 * Public Reggae class has no shared library API, except of standard open, close and expunge vectors.

← Older revision		Revision as of 19:40, 12 October 2010
Line 1:		Line 1:
	''Grzegorz Kraszewski''		''Grzegorz Kraszewski''
		+

	Reggae functionality can be extended by adding classes to it. New classes may be either public or private.		Reggae functionality can be extended by adding classes to it. New classes may be either public or private.