在QT基础上用C++实现的UNDO和REDO功能-in QT C on the basis of achieving the UNDO function and REDO

This article introduces a simple approach to in-memory transactions that can be used to implement Undo and Redo. The technique uses SEH and Virtual Memory and requires only STL and Win32.

实现UNDO,REDO功能,包括了工具栏上UNDO,REDO按钮.-teach you how to realize undo_redo function,providing you with undo,redo button on toolbar