###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.) # SDL_SensorOpen Open a sensor for use. ## Syntax ```c SDL_Sensor* SDL_SensorOpen(int device_index); ``` ## Function Parameters | | | | -------------------- | ------------------ | | **device_index** | The sensor to open | ## Return Value Returns an [SDL_Sensor](SDL_Sensor) sensor object, or NULL if an error occurred. ## Version This function is available since SDL 2.0.9. ---- [CategoryAPI](CategoryAPI)