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).
Bitmap get_bitmap()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.
set_bitmap(Bitmap bitmap)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]