Qt 如何使窗体初始最大化

使用以下函数即可解决：

void QWidget::setWindowState ( Qt::WindowStateswindowState )

这样的函数，通过它可以设置窗体的初始状态，Qt::WindowStates 一共有下面几种状态：

Constant	Value	Description
`Qt::WindowNoState`	`0x00000000`	The window has no state set (in normal state).
`Qt::WindowMinimized`	`0x00000001`	The window is minimized (i.e. iconified).
`Qt::WindowMaximized`	`0x00000002`	The window is maximized with a frame around it.
`Qt::WindowFullScreen`	`0x00000004`	The window fills the entire screen without any frame around it.
`Qt::WindowActive`	`0x00000008`	The window is the active window, i.e. it has keyboard focus.

在窗体构造函数中添加以下这一句：

setWindowState(Qt::WindowMaximized);

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