Tk Drag and Drop 是 Tcl/Tk 的一个扩展，用来实现拖放功能，基于 Tk 8.3.3 或者更高版本。支持包括 Windows\Mac\Linux 内嵌的拖放操作。
TkDND 2.6 发布，主要改进记录：
Improved support for accepting drops under Linux.
TkDND periodically checks if the selection can be retrieved, even if SelectionNotify has not been delivered to the Tk widget by Tk.
This release offers support for both dragging and dropping under all 3 major operating systems (Windows, OS X, Linux)
主页：http://sourceforge.net/projects/tkdnd/
下载：http://sourceforge.net/projects/tkdnd/files/
来自:开源中国社区
