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     77 ><H1
     78 ><A
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     81 >Chapter 5. General</H1
     82 ><DIV
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     85 ><DT
     86 ><B
     87 >Table of Contents</B
     88 ></DT
     89 ><DT
     90 ><A
     91 HREF="sdlinit.html"
     92 >SDL_Init</A
     93 >&nbsp;--&nbsp;Initializes SDL</DT
     94 ><DT
     95 ><A
     96 HREF="sdlinitsubsystem.html"
     97 >SDL_InitSubSystem</A
     98 >&nbsp;--&nbsp;Initialize subsystems</DT
     99 ><DT
    100 ><A
    101 HREF="sdlquitsubsystem.html"
    102 >SDL_QuitSubSystem</A
    103 >&nbsp;--&nbsp;Shut down a subsystem</DT
    104 ><DT
    105 ><A
    106 HREF="sdlquit.html"
    107 >SDL_Quit</A
    108 >&nbsp;--&nbsp;Shut down SDL</DT
    109 ><DT
    110 ><A
    111 HREF="sdlwasinit.html"
    112 >SDL_WasInit</A
    113 >&nbsp;--&nbsp;Check which subsystems are initialized</DT
    114 ><DT
    115 ><A
    116 HREF="sdlgeterror.html"
    117 >SDL_GetError</A
    118 >&nbsp;--&nbsp;Get SDL error string</DT
    119 ><DT
    120 ><A
    121 HREF="sdlenvvars.html"
    122 >SDL_envvars</A
    123 >&nbsp;--&nbsp;SDL environment variables</DT
    124 ></DL
    125 ></DIV
    126 ><P
    127 >Before SDL can be used in a program it must be initialized with <A
    128 HREF="sdlinit.html"
    129 ><TT
    130 CLASS="FUNCTION"
    131 >SDL_Init</TT
    132 ></A
    133 >. <TT
    134 CLASS="FUNCTION"
    135 >SDL_Init</TT
    136 > initializes all the subsystems that the user requests (video, audio, joystick, timers and/or cdrom). Once SDL is initialized with <TT
    137 CLASS="FUNCTION"
    138 >SDL_Init</TT
    139 > subsystems can be shut down and initialized as needed using <A
    140 HREF="sdlinitsubsystem.html"
    141 ><TT
    142 CLASS="FUNCTION"
    143 >SDL_InitSubSystem</TT
    144 ></A
    145 > and <A
    146 HREF="sdlquitsubsystem.html"
    147 ><TT
    148 CLASS="FUNCTION"
    149 >SDL_QuitSubSystem</TT
    150 ></A
    151 >.</P
    152 ><P
    153 >SDL must also be shut down before the program exits to make sure it cleans up correctly. Calling <A
    154 HREF="sdlquit.html"
    155 ><TT
    156 CLASS="FUNCTION"
    157 >SDL_Quit</TT
    158 ></A
    159 > shuts down all subsystems and frees any resources allocated to SDL.</P
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