AlphaChannelActiveBits Property

Gets or sets a value indicating the active bits for the alpha channel.

Syntax

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public int AlphaChannelActiveBits {get; set;}

'Declaration
 
Public Property AlphaChannelActiveBits As Integer

'Usage
 
Dim instance As CodecsJpeg2000SaveOptions
Dim value As Integer
 
instance.AlphaChannelActiveBits = value
 
value = instance.AlphaChannelActiveBits

public int AlphaChannelActiveBits {get; set;}

 get_AlphaChannelActiveBits();
 set_AlphaChannelActiveBits(value);

public:
property int AlphaChannelActiveBits {
   int get();
   void set (    int value);
}

Property Value

The active bits for the alpha channel. Possible values are 1 and 8. If the value is 1 it means the 256 levels of the 8-bit alpha channels will be transformed into two levels of value 255 or 0, using simple threshold. The threshold value is 127, so all values gt; 127 will be set to 255 and all values lt;= 127 will be set to 0. If the value is 8, all 256 levels of the 8-bit alpha channels will be compressed. This is the default value. This option should be used on a 32-bit bitmap: otherwise, it has no effect.

Example

For an example, refer to CodecsJpeg2000Options.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

CodecsJpeg2000SaveOptions Class
CodecsJpeg2000SaveOptions Members
Programming With JPEG 2000 Features