Mercurial > sdl-ios-xcode

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>Chapter 5. General</H1
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>Table of Contents</B
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><DT
><A
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>SDL_Init</A
>&nbsp;--&nbsp;Initializes SDL</DT
><DT
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>SDL_InitSubSystem</A
>&nbsp;--&nbsp;Initialize subsystems</DT
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>SDL_QuitSubSystem</A
>&nbsp;--&nbsp;Shut down a subsystem</DT
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>SDL_Quit</A
>&nbsp;--&nbsp;Shut down SDL</DT
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>SDL_WasInit</A
>&nbsp;--&nbsp;Check which subsystems are initialized</DT
><DT
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>SDL_GetError</A
>&nbsp;--&nbsp;Get SDL error string</DT
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>SDL_envvars</A
>&nbsp;--&nbsp;SDL environment variables</DT
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><P
>Before SDL can be used in a program it must be initialized with <A
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><TT
CLASS="FUNCTION"
>SDL_Init</TT
></A
>. <TT
CLASS="FUNCTION"
>SDL_Init</TT
> initializes all the subsystems that the user requests (video, audio, joystick, timers and/or cdrom). Once SDL is initialized with <TT
CLASS="FUNCTION"
>SDL_Init</TT
> subsystems can be shut down and initialized as needed using <A
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><TT
CLASS="FUNCTION"
>SDL_InitSubSystem</TT
></A
> and <A
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><TT
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>SDL_QuitSubSystem</TT
></A
>.</P
><P
>SDL must also be shut down before the program exits to make sure it cleans up correctly. Calling <A
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CLASS="FUNCTION"
>SDL_Quit</TT
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> shuts down all subsystems and frees any resources allocated to SDL.</P
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author	Sam Lantinga <slouken@libsdl.org>
date	Mon, 08 Dec 2008 00:27:32 +0000
parents	355632dca928
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