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`wx:snip%`

Superclass: wx:object%

A direct instance of wx:snip% is uninteresting. Useful snips are defined by instantiating derived subclasses, but this class defines the basic fucntionality.

In deriving a new snip class, these methods must be overridden to create a useful snip:

get-extent
draw
resize if the snip can be resized by the user
partial-offset if the snip can contain more than one item
split if the snip can contain more than one item
size-cache-invalid if the snip caches the result to get-extent
get-text (not required)
find-scroll-step, get-num-scroll-steps, and get-scroll-step-offset if the snip can contain more than one scroll position

If a snip can contain more than one item, then the snip's count must be maintained as well.

To define a class of snips that can be saved or cut-and-pasted:

Create an instance of wx:snip-class%.
For each instance of the snip class, set the snip's classs object with set-snipclass.
Override the copy method.
Override the write method.

(make-object wx:snip%) -> wx:snip% object
Creates a plain snip of length 1.

Methods:

PLT