set_unknown_color

Description:

[ Version ( since = "5.0.3" ) ]
public abstract void set_unknown_color (double red, double green, double blue, double alpha)

Defines the color to be used when this displays an invalid value.

Any value not between 0. and 1. will result in the default hard coded values to be used (grayish).

this	a Widget object which implements the DataEntry interface
red	the red component of a color
green	the green component of a color
blue	the blue component of a color
alpha	the alpha component of a color