QT真正多窗口的实现，利用QT桌面类。可以将两个单独显示的界面程序联合到一起，QT进阶的必经之路-QT window to achieve a truly multi-use QT Desktop class. You can display the interface of two separate procedures for the joint together, QT advanced a must

Qt做一个简单的多文档编辑器，该实验的过程中主要涉及到Qt窗口的设计，菜单栏(包括右击菜单)，工具栏，状态栏，常见的文本文件等操作-Qt do a simple multi-document editor the Qt window design, the menu bar (including the right-click menu), mainly related to the process of the experiment, toolbar, status bar, common t

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