ArcObjects Library Reference (Display)

IColor.Transparency Property

[Visual Basic .NET]
Public Property Transparency As Byte

[C#]
public byte Transparency {get; set;}

[C++]
HRESULT get_Transparency(
  Byte* alphaValue
);

[C++]
HRESULT put_Transparency(
  Byte alphaValue
);

[C++]
Parameters
alphaValue [out, retval]
  alphaValue is a parameter of type Byte
alphaValue [in]
  alphaValue is a parameter of type Byte

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Transparency is the degree to which a color is opaque. True transparency is only supported at the layer level. For graphic elements, 0 for transparent and 255 for opaque are the only supported values. Use either the ILayerEffects or ITransparencyRenderer interfaces to set layer transparency. For layer transparency to work properly the display device must be set to "True Color (32 bit)".

The default value is 255.