###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_AddGamepadMappingsFromRW Load a set of gamepad mappings from a seekable SDL data stream. ## Syntax ```c int SDL_AddGamepadMappingsFromRW(SDL_RWops *src, SDL_bool freesrc); ``` ## Function Parameters | | | | --------------- | ------------------------------------------------------------------------------------------------------------------- | | **src** | the data stream for the mappings to be added | | **freesrc** | if [SDL_TRUE](SDL_TRUE), calls [SDL_RWclose](SDL_RWclose)() on `src` before returning, even in the case of an error | ## Return Value Returns the number of mappings added or -1 on error; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks 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 will load the text database entirely in memory before processing it, so take this into consideration if you are in a memory constrained environment. ## Version This function is available since SDL 3.0.0. ## Related Functions * [SDL_AddGamepadMapping](SDL_AddGamepadMapping) * [SDL_AddGamepadMappingsFromFile](SDL_AddGamepadMappingsFromFile) * [SDL_GetGamepadMappingForGUID](SDL_GetGamepadMappingForGUID) ---- [CategoryAPI](CategoryAPI)