Function sdl2_sys::SDL_SetWindowOpacity

source · 
pub unsafe extern "C" fn SDL_SetWindowOpacity(
    window: *mut SDL_Window,
    opacity: f32,
) -> c_int
Expand description

Set the opacity for a window.

The parameter opacity will be clamped internally between 0.0f (transparent) and 1.0f (opaque).

This function also returns -1 if setting the opacity isn’t supported.

\param window the window which will be made transparent or opaque \param opacity the opacity value (0.0f - transparent, 1.0f - opaque) \returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

\since This function is available since SDL 2.0.5.

\sa SDL_GetWindowOpacity