Specifies the current contrast value of an image or underlay.

See Also | Example

Signature

object.Contrast

object

DwfUnderlay, Raster
The object or objects this property applies to.

Contrast

Integer; read-write
The valid range is 0 to 100 inclusive.
The default is 50.

Remarks

You can adjust the image brightness, contrast, and fade to the display of the image as well as to the plotted output without affecting the original raster image or underlay file. Adjust brightness to darken or lighten an image. Adjust contrast to make images that have poor quality easier to read. Adjust fade to make vectors easier to see over images, and to create a watermark effect in your plotted output.

NOTE Bitonal images cannot be adjusted for brightness, contrast, or fade.

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