BitmapDataObject is a specialization of DataObject for bitmap data. It can be used without change to paste data into the Clipboard or a DropSource. A user may wish to derive a new class from this class for providing a bitmap on-demand in order to minimize memory consumption when offering data in several formats, such as a bitmap and GIF.
Clipboard and drag and drop overview, DataObject, DataObjectSimple, FileDataObject, TextDataObject, DataObject
BitmapDataObject.new(Bitmap bitmap = NullBitmap)
Constructor, optionally passing a bitmap (otherwise use set_bitmap later).
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 Widgets’ internals. Use this method to get data in bitmap form from the Clipboard.
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.
[This page automatically generated from the Textile source at Wed Sep 09 02:21:02 +0100 2009]