This function will give you a SDL_Joystick object, which allows you to use
the SDL_Joystick functions with a SDL_Gamepad object. This would be useful
for getting a joystick's position at any given time, even if it hasn't
moved (moving it would produce an event, which would have the axis' value).
The pointer returned is owned by the SDL_Gamepad. You should not call
SDL_CloseJoystick() on it, for example, since doing so will likely cause
SDL to crash.
Get the underlying joystick from a gamepad.
This function will give you a SDL_Joystick object, which allows you to use the SDL_Joystick functions with a SDL_Gamepad object. This would be useful for getting a joystick's position at any given time, even if it hasn't moved (moving it would produce an event, which would have the axis' value).
The pointer returned is owned by the SDL_Gamepad. You should not call SDL_CloseJoystick() on it, for example, since doing so will likely cause SDL to crash.