TypeLib Xojo support Plugin |

# RawBitmap.PixelAlpha Method

Sets or gets the alpha value for pixel at given location

PixelAlpha(
x as Integer,
y as Integer) as UInt8
PixelAlpha(
x as Integer,
y as Integer
assigns value as UInt8)

#### Parameters

x
  The x coordinate to set or get (zero based)
y
  The y coordinate to set or get (zero based)
value (assignment parameter)
  The alpha value 0 - 255 as its represented in a bitmap (reverse to how Xojo color represents the Alpha)

#### Returns

UInt8
  The alpha value when using the getter.

#### Remarks

If the RawBitmap has no alpha channel then this getter / setter function does nothing.
This method has no meaningful result when using CMYK colorspace.
This method does nothing on 16bit per channel bitmaps.

#### See Also

RawBitmap Class