API Documentation > CorelDRAW > 2025-v26 > Color > IVGColor

Converts the color model to YIQ

Syntax:

Remarks:

The ConvertToYIQ method converts the active color model to the YIQ color model in CorelDRAW. 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 YIQ color model is a color model used in television broadcast systems (North American video standard, or NTSC). Colors are split into a luminance value (Y) and two chromaticity values (I and Q). On a color monitor, all three components are visible. On a monochrome monitor, only the Y component is visible. The square, two-dimensional visual selector defines the I and Q values, and the vertical visual selector defines the Y value. All values are scaled from 0 to 255.

Examples:

The following VBA example converts all uniform fill colors in the selected shapes to the YIQ color model.

Sub Test()
Dim c As New color
Dim s As Shape
For Each s In ActiveSelection.Shapes
  If s.Fill.Type = cdrUniformFill Then

 s.Fill.UniformColor.ConvertToYIQ
  End If
Next s 
End Sub