By default, the DisplayAs property is Stretch. The DisplayAs property retrieves or sets a value that indicates the way how the graphic is arranged on the mask/clip. The Name property loads a picture into the clip. The picture being used as a clipping region must support transparency / alpha blending ( picture's attribute includes the PICTURE_TRANSPARENT ). For instance, you can use any PNG file with transparency. By default, the opaque-pixels in the picture defines the clipping region. Use the AlphaFrom / AlphaTo to include semi-transparent pixels in the clipping region.

To define a picture clip region over the layer you can use any of the following properties:

• Name, Indicates the picture to be used as a mask/clip.
• DisplayAs, Retrieves or sets a value that indicates the way how the graphic is arranged on the mask/clip.
• AlphaFrom, Gets or sets a value that specifies the alpha-byte to start clipping the picture from.
• AlphaTo, Gets or sets a value that specifies the alpha-byte to end clipping the picture to.

To specify the position / size of the picture clip object you can use any of the following properties:

• Left, Specifies the left position / expression of the clip, relative to the layer.
• Top, Specifies the top position / expression of the clip, relative to the layer.
• Width, Specifies the width value / expression of the clip, relative to the layer.
• Height, Specifies the height value / expression of the clip, relative to the layer.

To move the clipping region you can use any of the following properties:

• OffsetX, Specifies the x-offset expression / value of the clip, relative to the layer.
• OffsetY, Specifies the y-offset expression / value of the clip, relative to the layer.

If none of these properties are calling no clipping is applied to layer.

The following screen shot shows properties of the clipping objects relative to the layer:

The InverseClip property inverses the current clipping region, so anything that was included in the clipping region will be excluded, and reverse.