BitmapExtensionsGetWritableBitmapData(Bitmap, Color, Byte) Method

public static IWritableBitmapData GetWritableBitmapData(
	this Bitmap bitmap,
	Color backColor = default,
	byte alphaThreshold = 128
)

<ExtensionAttribute>
Public Shared Function GetWritableBitmapData ( 
	bitmap As Bitmap,
	Optional backColor As Color = Nothing,
	Optional alphaThreshold As Byte = 128
) As IWritableBitmapData

public:
[ExtensionAttribute]
static IWritableBitmapData^ GetWritableBitmapData(
	Bitmap^ bitmap, 
	Color backColor = Color(), 
	unsigned char alphaThreshold = 128
)

[<ExtensionAttribute>]
static member GetWritableBitmapData : 
        bitmap : Bitmap * 
        ?backColor : Color * 
        ?alphaThreshold : byte 
(* Defaults:
        let _backColor = defaultArg backColor new Color()
        let _alphaThreshold = defaultArg alphaThreshold 128
*)
-> IWritableBitmapData 

Parameters

bitmap  Bitmap

A Bitmap instance, whose data is about to be accessed.

backColor  Color  (Optional)

When setting pixels of indexed bitmaps and bitmaps without alpha support or with single bit alpha, then specifies the color of the background. Color values with alpha, which are considered opaque will be blended with this color before setting the pixel in the result bitmap data. The alpha value (Color.A property) of the specified background color is ignored. This parameter is optional.
Default value: Color.Empty, which has the same RGB values as Black.

alphaThreshold  Byte  (Optional)

When setting pixels of bitmaps with single bit alpha or with a palette that has a transparent color, then specifies a threshold value for the Color.A property, under which the color is considered transparent. If 0, then the pixels to be set will never be transparent. This parameter is optional.
Default value: 128.

Return Value

Usage Note

Reference