###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_SetJoystickVirtualButton Set the state of a button on an opened virtual joystick. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_joystick.h) ## Syntax ```c bool SDL_SetJoystickVirtualButton(SDL_Joystick *joystick, int button, bool down); ``` ## Function Parameters | | | | | ------------------------------ | ------------ | ---------------------------------------------------------- | | [SDL_Joystick](SDL_Joystick) * | **joystick** | the virtual joystick on which to set state. | | int | **button** | the index of the button on the virtual joystick to update. | | bool | **down** | true if the button is pressed, false otherwise. | ## Return Value (bool) Returns true on success or false on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks Please note that values set here will not be applied until the next call to [SDL_UpdateJoysticks](SDL_UpdateJoysticks), which can either be called directly, or can be called indirectly through various other SDL APIs, including, but not limited to the following: [SDL_PollEvent](SDL_PollEvent), [SDL_PumpEvents](SDL_PumpEvents), [SDL_WaitEventTimeout](SDL_WaitEventTimeout), [SDL_WaitEvent](SDL_WaitEvent). ## Version This function is available since SDL 3.1.3. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryJoystick](CategoryJoystick)