Default/wxGTK-specific constructor. If you use the default constructor you must
call \helpref{wxDropSource::SetData}{wxdropsourcesetdata} later.
{\it win} is required by wxGTK and therefore should always be set.
Default/wxGTK-specific constructor. If you use the default constructor you must
call \helpref{wxDropSource::SetData}{wxdropsourcesetdata} later.
{\it win} is required by wxGTK and therefore should always be set.