devela::_dep::sdl3::sys::video

Function SDL_GetWindowOpacity

pub unsafe extern "C" fn SDL_GetWindowOpacity(
    window: *mut SDL_Window,
) -> f32
Available on crate feature dep_sdl3 only.
Expand description

Get the opacity of a window.

If transparency isn’t supported on this platform, opacity will be returned as 1.0f without error.

§Parameters

  • window: the window to get the current opacity value from.

§Return value

Returns the opacity, (0.0f - transparent, 1.0f - opaque), or -1.0f on failure; call SDL_GetError() for more information.

§Thread safety

This function should only be called on the main thread.

§Availability

This function is available since SDL 3.2.0.

§See also