Gets or sets the ScRGB alpha channel value of the color.
Assembly: PresentationCore (in PresentationCore.dll)
The alpha channel of a Color structure determines the amount of transparency the Color has. An alpha value of 1 indicates the Color is completely opaque and a value of 0 indicates the color is completely transparent.
The sRGB channels (A, R, G, B) and the ScRGB channels ( , ScR, ScG, ScB) of the Color structure are synchronized properties. For example, when A, the sRGB alpha channel, is modified, the ScRGB alpha channel, is converted to the equivalent value using the 0-1 range that the Sc scheme supports.
Available since 3.0