主窗口示例
Qt 提供了应用程序主窗口的所有标准功能。
主窗口可以有下拉菜单、工具栏和停靠窗口。这些独立的用户输入形式统一在一个集成的操作系统中，该系统还支持菜单项中的键盘快捷键和加速键。
菜单示例演示了如何在主窗口应用程序中使用菜单。 | |
包含菜单、工具栏和状态栏的 widget 示例 |
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