'Declaration
 
Public Function TryGetUniformAlphaFromPixels( _
   ByRef alpha As System.Single _
) As System.Boolean

'Usage
 
Dim instance As NRaster
Dim alpha As System.Single
Dim value As System.Boolean
 
value = instance.TryGetUniformAlphaFromPixels(alpha)

public System.bool TryGetUniformAlphaFromPixels( 
   out System.float alpha
)

Parameters

alpha

If all pixels have the same alpha value, this parameter stores the unfiorm alpha value as a floating point number in the range [0, 1]. If the alpha is not uniform this parameter is set to -1.0.

Return Value

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later)

Reference

NRaster Class
NRaster Members