BackgroundAlphaChannel 284 Magick++/lib/Magick++/Include.h using MagickCore::BackgroundAlphaChannel; BackgroundAlphaChannel 718 magick/channel.c case BackgroundAlphaChannel: BackgroundAlphaChannel 100 magick/option.c { "Background", BackgroundAlphaChannel, UndefinedOptionFlag, MagickFalse },