Load a set of gamepad mappings from a file.
int SDL_AddGamepadMappingsFromFile(const char *file);
|file||the mappings file to load|
Returns the number of mappings added or -1 on error; call SDL_GetError() for more information.
You can call this function several times, if needed, to load different database files.
If a new mapping is loaded for an already known gamepad GUID, the later version will overwrite the one currently loaded.
Mappings not belonging to the current platform or with no platform field specified will be ignored (i.e. mappings for Linux will be ignored in Windows, etc).
This function is available since SDL 3.0.0.