gdk-sharp0.0.0.0neutralGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.Determines how bit values for the source pixels are combine with the bit values for destination pixels to produce the final result.The sixteen values here correspond to the 16 different possible 2x2 truth tables. Only a couple of these values are usually useful; for colored images, only Copy, Xor and Invert are generally useful. For bitmaps, And and Or are also useful.System.EnumSystem.IComparableSystem.IConvertibleSystem.IFormattableFieldGdk.FunctionCopyTo be addedFieldGdk.FunctionInvertTo be addedFieldGdk.FunctionXorTo be addedFieldGdk.FunctionClearTo be addedFieldGdk.FunctionAndTo be addedFieldGdk.FunctionAnd ReverseTo be addedFieldGdk.FunctionAnd InvertTo be addedFieldGdk.FunctionNo opTo be addedFieldGdk.FunctionOrTo be addedFieldGdk.FunctionEquivTo be addedFieldGdk.FunctionOr ReverseTo be addedFieldGdk.FunctionCopy InvertTo be addedFieldGdk.FunctionOr InvertTo be addedFieldGdk.FunctionN AndTo be addedFieldGdk.FunctionNorTo be addedFieldGdk.FunctionSetTo be addedFieldSystem.Int32Internal field.Do not use.