qt响应lineedit的鼠标点击事件，实现点击lineedit的时候弹出窗口-the qt in response to a mouse click event lineedit, click lineedit pop-up window

主要是在qt下的，实现viewtable下嵌入lineedit。还可以实现嵌入button，不过主要是实现viewtable可编辑。-Mainly in the qt realize viewtable to embed lineedit. You can also achieve embed button, but mainly to achieve viewtable editable.

QT下ip设置的lineedit,使用正则表达式-IP mask of lineedit in QT

在qtcreator下编写的强制定时关机系统，熟悉qt信号和槽传递过程的练习程序，在pc上运行平稳。label添加.png图片和更改图标icon。lineEdit中的信息读取，windows内核命令的调用执行及相关关机配置(The mandatory timing shutdown system, written under qtcreator, is familiar with the practice program of the QT signal and the channel tran