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Set the opacity for a window.
int SDL_SetWindowOpacity(SDL_Window *window, float opacity);
|window||the window which will be made transparent or opaque|
|opacity||the opacity value (0.0f - transparent, 1.0f - opaque)|
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
opacity will be clamped internally between 0.0f (transparent) and 1.0f (opaque).
This function also returns -1 if setting the opacity isn't supported.
This function is available since SDL 3.0.0.
CategoryAPI, CategoryVideo, CategoryDraft