= SDL_GameControllerMappingForDeviceIndex =

Get the mapping of a game controller.

== Syntax ==

<syntaxhighlight lang='c'>
char* SDL_GameControllerMappingForDeviceIndex(int joystick_index);
</syntaxhighlight>

== Function Parameters ==

{|
|'''joystick_index'''
|the device_index of a device, from zero to [[SDL_NumJoysticks]]()-1
|}

== Return Value ==

Returns the mapping string. Must be freed with [[SDL_free]](). Returns NULL
if no mapping is available.

== Remarks ==

This can be called before any controllers are opened.

== Version ==

This function is available since SDL 2.0.9.

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[[CategoryAPI]]