GetAlpha Method (color)

Returns the value of the alpha component associated with a Quartz color.

Original signature is 'CGFloat CGColorGetAlpha ( CGColorRef color );'

Available in Mac OS X version 10.3 and later.

Declaration Syntax

Visual Basic

Visual C++

public static CGFloat GetAlpha(
	IntPtr color
)

Public Shared Function GetAlpha ( _
	color As IntPtr _
) As CGFloat

public:
static CGFloat GetAlpha(
	IntPtr color
)

Parameters

Return Value

An alpha intensity value in the range [0,1]. The value represents the opacity of the color.

Version Information

Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)

Assembly: Monobjc.AppKit (Module: Monobjc.AppKit)