NAME

SDL_SetWindowOpacity - Set the opacity for a window.

SYNOPSIS

#include <SDL3/SDL_video.h>

bool SDL_SetWindowOpacity(SDL_Window *window, float opacity);

DESCRIPTION

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.

FUNCTION PARAMETERS

window

the window which will be made transparent or opaque.

opacity

the opacity value (0.0f - transparent, 1.0f - opaque).

RETURN VALUE

Returns true on success or false 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

SDL_GetWindowOpacity(3)