note on how to import contants

[sdlgit/SDL-Site.git] / pages / SDL.html-inc

<div class="pod">
<!-- INDEX START -->
<h3 id="TOP">Index</h3>

<ul><li><a href="#NAME">NAME</a>
<ul><li><a href="#CATEGORY">CATEGORY</a></li>
</ul>
</li>
<li><a href="#SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#DESCRIPTION">DESCRIPTION</a></li>
<li><a href="#The_SDL_Perl_2009_Development_Team">The SDL Perl 2009 Development Team</a>
<ul><li><a href="#Documentation">Documentation</a></li>
<li><a href="#Perl_Development">Perl Development</a></li>
<li><a href="#Maintainance">Maintainance </a></li>
</ul>
</li>
<li><a href="#MacOSX_Experimental_Usage">MacOSX Experimental Usage</a>
<ul><li><a href="#Running_SDL_Perl_Scripts_in_MacOSX">Running SDL Perl Scripts in MacOSX</a></li>
</ul>
</li>
<li><a href="#Functions_exported_by_SDL_pm">Functions exported by SDL.pm</a>
<ul><li><a href="#init_flags">init(flags) </a></li>
<li><a href="#init_subsystem_flags">init_subsystem(flags)</a></li>
<li><a href="#quit_subsystem_flags">quit_subsystem(flags)</a></li>
<li><a href="#quit">quit</a></li>
<li><a href="#was_init_flags">was_init(flags)</a></li>
<li><a href="#get_error">get_error()</a></li>
<li><a href="#set_error_real_error_values">set_error_real(error, @values)  </a></li>
<li><a href="#error_code_need_to_be_coded">error(code) * need to be coded</a></li>
<li><a href="#clear_error">clear_error() </a></li>
<li><a href="#load_object">load_object()</a></li>
<li><a href="#load_function">load_function()</a></li>
<li><a href="#unload_object">unload_object()</a></li>
<li><a href="#VERSION">VERSION()</a></li>
<li><a href="#version">version()</a></li>
<li><a href="#linked_version">linked_version</a></li>
<li><a href="#get_error-2">get_error()</a></li>
<li><a href="#delay_ms">delay(ms)</a></li>
</ul>
</li>
<li><a href="#AUTHORS">AUTHORS</a>
</li>
</ul><hr />
<!-- INDEX END -->

<h1 id="NAME">NAME</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="NAME_CONTENT">
<p>SDL - Simple DirectMedia Layer for Perl</p>

</div>
<h2 id="CATEGORY">CATEGORY</h2>
<div id="CATEGORY_CONTENT">
<p>Core</p>

</div>
<h1 id="SYNOPSIS">SYNOPSIS</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="SYNOPSIS_CONTENT">
<pre>  use SDL;

</pre>

</div>
<h1 id="DESCRIPTION">DESCRIPTION</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="DESCRIPTION_CONTENT">
<p>SDL_perl is a package of perl modules that provides both functional and object orient
interfaces to the Simple DirectMedia Layer for Perl 5.  This package does take some
liberties with the SDL API, and attempts to adhere to the spirit of both the SDL
and Perl.  This document describes the low-level functional SDL_perl API.  For the
object oriented programming interface please see the documentation provided on a
per class basis.</p>

</div>
<h1 id="The_SDL_Perl_2009_Development_Team">The SDL Perl 2009 Development Team</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="The_SDL_Perl_2009_Development_Team_C">

</div>
<h2 id="Documentation">Documentation</h2>
<div id="Documentation_CONTENT">
<pre>	Nick: magnet

</pre>

</div>
<h2 id="Perl_Development">Perl Development</h2>
<div id="Perl_Development_CONTENT">
<pre>	Nick: Garu
	Name: Breno G. de Oliveira

	Nick: Dngor
	Name: Rocco Caputo

	Nick: nferraz
	Name: Nelson Ferraz

	Nick: acme
	Name: Leon Brocard

	Nick: FROGGS
	Name: Tobias Leich

</pre>

</div>
<h2 id="Maintainance">Maintainance </h2>
<div id="Maintainance_CONTENT">
<pre>	Nick: kthakore
	Name: Kartik Thakore

</pre>

</div>
<h1 id="MacOSX_Experimental_Usage">MacOSX Experimental Usage</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="MacOSX_Experimental_Usage_CONTENT">
<p>Please get libsdl packages from Fink</p>
<pre>	perl Build.PL
	perl Build test
	perl Build bundle
	perl Build install

</pre>

</div>
<h2 id="Running_SDL_Perl_Scripts_in_MacOSX">Running SDL Perl Scripts in MacOSX</h2>
<div id="Running_SDL_Perl_Scripts_in_MacOSX_C">
<p>First set the PERL5LIB environment variable to the dependencies of your script</p>
<pre>	%export PERL5LIB=$PERL5LIB:./lib

</pre>
<p>Use the SDLPerl executable made in the bundle and call your scripts</p>
<pre>	%SDLPerl.app/Contents/MacOS/SDLPerl yourScript.pl

</pre>

</div>
<h1 id="Functions_exported_by_SDL_pm">Functions exported by SDL.pm</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="Functions_exported_by_SDL_pm_CONTENT">

</div>
<h2 id="init_flags">init(flags) </h2>
<div id="init_flags_CONTENT">
<p>As with the C language API, SDL_perl initializes the SDL environment through
the <code>SDL::init</code> subroutine. This routine takes a mode flag constructed through
the bitwise OR product of the SDL_INIT_* constants.</p>
<p>The constants are not exported by default. You can export them into your namespace by doing:</p>
<pre> use SDL ':all';

</pre>
<p>or access them directly:</p>
<pre> SDL::SDL_INIT_AUDIO;

</pre>
<dl>
	<dt>*
SDL_INIT_AUDIO</dt>
	<dt>*
SDL_INIT_VIDEO</dt>
	<dt>*
SDL_INIT_CDROM</dt>
	<dt>*
SDL_INIT_EVERYTHING</dt>
	<dt>*
SDL_INIT_NOPARACHUTE</dt>
	<dt>*
SDL_INIT_JOYSTICK</dt>
	<dt>*
SDL_INIT_TIMER</dt>
</dl>
<p><code>SDL::Init</code> returns 0 on success, or -1 on error.</p>

</div>
<h2 id="init_subsystem_flags">init_subsystem(flags)</h2>
<div id="init_subsystem_flags_CONTENT">
<p>After SDL has been initialized with SDL::init you may initialize uninitialized subsystems with SDL::init_subsystem.
The flags parameter is the same as that used in SDL::init. </p>
<p>SDL::init_subsystem returns 0 on success, or -1 on error.</p>

</div>
<h2 id="quit_subsystem_flags">quit_subsystem(flags)</h2>
<div id="quit_subsystem_flags_CONTENT">
<p>SDL::quit_subsystem allows you to shut down a subsystem that has been previously initialized by SDL::init or SDL::init_subsystem.
The flags tells SDL::quit_subSystem which subsystems to shut down, it uses the same values that are passed to SDL::init. </p>
<p>SDL::quit_subsystem doesn't returns any value.</p>

</div>
<h2 id="quit">quit</h2>
<div id="quit_CONTENT">
<p>Shuts down all SDL subsystems, unloads the dynamically linked library and frees the allocated resources.</p>
<p><strong>Note</strong>: This will be called automatically when perl exits. You don't need to call this, except you want to initialize SDL after this again.</p>
<p>SDL::quit doesn't returns any value.</p>

</div>
<h2 id="was_init_flags">was_init(flags)</h2>
<div id="was_init_flags_CONTENT">
<p>SDL::was_init allows you to see which SDL subsytems have been initialized.
flags is a bitwise OR'd combination of the subsystems you wish to check (see SDL::init for a list of subsystem flags). 
If 'flags' is 0 or SDL_INIT_EVERYTHING, it returns a mask of all initialized subsystems (this does not include SDL_INIT_EVENTTHREAD or SDL_INIT_NOPARACHUTE).</p>





</div>
<h2 id="get_error">get_error()</h2>
<div id="get_error_CONTENT">
<p>The last error message set by the SDL library can be retrieved using the subroutine
<code>SDL::get_error</code>, which returns a scalar containing the text of the message if any.</p>

</div>
<h2 id="set_error_real_error_values">set_error_real(error, @values)  </h2>
<div id="set_error_real_error_values_CONTENT">
<p>SDL::get_error sets the SDL error to a printf style formatted string. 
it doesn't returns any values.</p>

</div>
<h2 id="error_code_need_to_be_coded">error(code) * need to be coded</h2>
<div id="error_code_need_to_be_coded_CONTENT">
<p>Sets the SDL error message to one of several predefined strings specified by code. </p>
<p>code can be :</p>
<dl>
	<dt>SDL_errorcode</dt>
	<dd>
		<p>The corresponding error string</p>
	</dd>
	<dt>SDL_ENOMEM</dt>
	<dd>
		<p>Out of memory</p>
	</dd>
	<dt>SDL_EFREAD</dt>
	<dd>
		<p>Error reading from datastream</p>
	</dd>
	<dt>SDL_EFWRITE</dt>
	<dd>
		<p>Error writing to datastream</p>
	</dd>
	<dt>SDL_EFSEEK</dt>
	<dd>
		<p>Error seeking in datastream</p>
	</dd>
	<dt>SDL_UNSUPPORTED</dt>
	<dd>
		<p>Unknown SDL error</p>
	</dd>
	<dt>SDL_LASTERROR</dt>
	<dd>
		<p>Unknown SDL error</p>
	</dd>
	<dt>any other value</dt>
	<dd>
		<p>Unknown SDL error</p>
	</dd>
</dl>
<p>Note 1: SDL_LASTERROR marks the highest numbered predefined error.
Note 2: SDL also defines SDL_OutOfMemory() and SDL_Unsupported() for internal use
which are equivalent to SDL_Error(SDL_ENOMEM) and SDL_Error(SDL_UNSUPPORTED) respectively. </p>
<p>SDL::Error doesn't returns any value.</p>





</div>
<h2 id="clear_error">clear_error() </h2>
<div id="clear_error_CONTENT">
<p>SDL::clear_error deletes all information about the last internal SDL error. Useful if the error has been handled by the program.
it doesn't returns any value.</p>

</div>
<h2 id="load_object">load_object()</h2>
<div id="load_object_CONTENT">
<p>Need to be coded.</p>

</div>
<h2 id="load_function">load_function()</h2>
<div id="load_function_CONTENT">
<p>Need to be coded.</p>

</div>
<h2 id="unload_object">unload_object()</h2>
<div id="unload_object_CONTENT">
<p>Need to be coded.</p>

</div>
<h2 id="VERSION">VERSION()</h2>
<div id="VERSION_CONTENT">
<p>Need to be coded. </p>

</div>
<h2 id="version">version()</h2>
<div id="version_CONTENT">
<p>Need to be coded.</p>

</div>
<h2 id="linked_version">linked_version</h2>
<div id="linked_version_CONTENT">
<p>Need to be coded.</p>

</div>
<h2 id="get_error-2">get_error()</h2>
<div id="get_error_CONTENT-2">
<p>The last error message set by the SDL library can be retrieved using the subroutine
<code>SDL::get_error</code>, which returns a scalar containing the text of the message if any.</p>

</div>
<h2 id="delay_ms">delay(ms)</h2>
<div id="delay_ms_CONTENT">
<p>This subroutine allows an application to delay further operations for atleast a
number of milliseconds provided as the argument.  The actual delay may be longer
than the specified depending on the underlying OS.</p>





</div>
<h1 id="AUTHORS">AUTHORS</h1><p><a href="#TOP" class="toplink">Top</a></p>
<div id="AUTHORS_CONTENT">
<p>magnet, kthakore</p>





</div>
</div>