使用Qt编写的小工具，内含代码和可执行程序。截图功能很简单，可借鉴的内容在于注册系统热键和单例程序，这两部分通过windows API实现，可以在开发其他软件时使用。-Qt write capture small tools It contains code and an executable program. Screenshot function is very simple, the content of the lessons is registration system hotkeys and singleton procedures, the two parts by Windows API, can be used in the development of other software