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Draft

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SDL_SetWindowOpacity

Set the opacity for a window.

Syntax

int SDL_SetWindowOpacity(SDL_Window * window, float opacity);

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 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Remarks

The parameter 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.

Version

This function is available since SDL 2.0.5.

SDL_GetWindowOpacity

CategoryAPI, CategoryVideo, CategoryDraft


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