This class may be used as is, but
See:
This class is derived (and can use functions) from:
wxWidgets docs:
Constructor, optionally passing a bitmap (otherwise use
Returns the bitmap associated with the data object.
You may wish to override this method when offering data on-demand, but this is not required by wxWidgets' internals. Use this method to get data in bitmap form from the
Sets the bitmap associated with the data object.
This method is called when the data object receives data. Usually there will be no reason to override this function.
Destroys the object.