LEADTOOLS Image File Support (Leadtools.Codecs assembly) Send comments on this topic. | Back to Introduction - All Topics | Help Version 17.0.3.29
AutoDetectAlpha Property
See Also 
Leadtools.Codecs Namespace > CodecsLoadOptions Class : AutoDetectAlpha Property



Indicates whether or not to automatically detect if the image has meaningful alpha channel values.

Syntax

Visual Basic (Declaration) 
Public Property AutoDetectAlpha As Boolean
Visual Basic (Usage)Copy Code
Dim instance As CodecsLoadOptions
Dim value As Boolean
 
instance.AutoDetectAlpha = value
 
value = instance.AutoDetectAlpha
C# 
public bool AutoDetectAlpha {get; set;}
C++/CLI 
public:
property bool AutoDetectAlpha {
   bool get();
   void set (    bool value);
}

Property Value

true automatically detect if the image has meaningful alpha channel values; false otherwise.

Remarks

This property is only supported in Silverlght versions of LEADTOOLS.

This property only has an effect when using a Silverlight WriteableBitmap object for image data storage.

Setting this property to true can slow down image loading and image processing. If you know that your images have meaningful alpha channel values or if you know that your images have only 0xFF for alpha channel values, set this property to false.

When this property is true, LEADTOOLS will detect if the loaded image data contains meaningful alpha channel values and then set the RasterImage.PremultiplyAlpha property accordingly.

Requirements

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

See Also