SDL_SetWindowOpacity

Set the opacity for a window.

Header File

bool SDL_SetWindowOpacity(SDL_Window *window, float opacity);

SDL_Window *	window	the window which will be made transparent or opaque.
float	opacity	the opacity value (0.0f - transparent, 1.0f - opaque).

(bool) Returns true on success or false on failure; call SDL_GetError() for more information.

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

This function also returns false if setting the opacity isn't supported.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.