sdlGetWindowOpacity function

double sdlGetWindowOpacity(
  1. Pointer<SdlWindow> window
)

Get the opacity of a window.

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

\param window the window to get the current opacity value from. \returns the opacity, (0.0f - transparent, 1.0f - opaque), or -1.0f on failure; call SDL_GetError() for more information.

\threadsafety This function should only be called on the main thread.

\since This function is available since SDL 3.1.3.

\sa SDL_SetWindowOpacity

extern SDL_DECLSPEC float SDLCALL SDL_GetWindowOpacity(SDL_Window *window)

Implementation

double sdlGetWindowOpacity(Pointer<SdlWindow> window) {
  final sdlGetWindowOpacityLookupFunction = libSdl3.lookupFunction<
      Float Function(Pointer<SdlWindow> window),
      double Function(Pointer<SdlWindow> window)>('SDL_GetWindowOpacity');
  return sdlGetWindowOpacityLookupFunction(window);
}