Object Model Reference : Classes : C : Color : Properties : Color.LabLuminance
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| Object Model Reference : Classes : C : Color : Properties : Color.LabLuminance |
Property LabLuminance As Long
Member of Color
The LabLuminance property returns or specifies the luminance level for the LAB color model in CorelDRAW. This property sets the Luminance, or brightness, value in the LAB color model. Values range from 0 to 255.
A color is an effect applied to an object that alters the object’s appearance by the way it reflects light. A color model is a system that defines the number and type of colors that make up an image and that is used to organize and define colors according to a set of basic properties that can be reproduced. Black-and-white, grayscale, RGB, CMYK, and paletted are examples of popular color modes.
The LAB color model is a color model created by the Commission Internationale de l’Eclairage (CIE). It contains a luminance (or lightness) component (L) and two chromatic components: “a” (green to red) and “b” (blue to yellow). The LAB color mode is based on the LAB color model.
The following VBA example fills all shape objects with the LAB gray color and displays the luminance value in a message box.
Sub Test() |
Dim s As Shape |
For Each s In ActivePage.Shapes |
If s.Fill.Type = cdrUniformFill Then |
s.Fill.UniformColor.LabAssign 128, 0, 0 |
End If |
Next s |
MsgBox s.Fill.UniformColor.LabLuminance |
End Sub |
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