Applying dithering, zooming, or transparency

You can use the Effect(Mode, Value) method provided by the CRMGraphicBlock object to apply a number of special effects to an image, including dithering, zooming, and transparency.

• Dithering. You can apply a dithering mode to an image to help improve its appearance, especially where color is limited. The available modes are:
  • Burkes
  • FloydSteinberg
  • JaJuNi
  • Sierra
  • SteveArche
  • Stucki

  The following example shows how to apply a dithering mode to an image:

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  Effect('Dither','FloydSteinberg');

• Zooming. You can magnify an image using the Zoom parameter and a percentage of zoom required. By default, the area to be zoomed is the center of the image.
  Example:

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  Effect('Zoom','200');

• Transparency. Available only in GIF images. You can enable transparency to make any whiteness in an image become transparent.
  The following example shows how to enable transparency:

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  Effect('Transparency','true');