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¶

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)