初学者：QT中，如何解释下面这行代码

[Abel Lee]

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

[Red_angelX]

窗口初始化
MainWindow::MainWindow这是构造函数
QMainWindow表示继承自QMainWindow,先调用QMainWindow的构造
,ui(new Ui::MainWindow)给ui初始化,值为new Ui::MainWindow

[帅得不敢出门]

QMainWindow::QMainWindow ( QWidget * parent = 0, Qt::WindowFlags flags = 0 )
Constructs a QMainWindow with the given parent and the specified widget flags.
QMainWindow sets the Qt::Window flag itself, and will hence always be created as a top-level widget.

[老邓]

成员初始化