NAME¶

SDL_GetWindowOpacity - Get the opacity of a window.

HEADER FILE¶

Defined in SDL3/SDL_video.h

SYNOPSIS¶

#include "SDL3/SDL.h"

float SDL_GetWindowOpacity(SDL_Window *window);

DESCRIPTION¶

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

FUNCTION 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¶

•(3), SDL_SetWindowOpacity(3)