QSplitter简单使用

先上结果图：

官方文档说明：

The QSplitter class implements a splitter widget; A splitter lets the user control the size of child widgets by dragging the boundary between them. Any number of widgets may be controlled by a single splitter. The typical use of a QSplitter is to create several widgets and add them using insertWidget() or addWidget(). 也就是说QSplitter 是一个分离控件的一个UI控件。被分离的控件之间的边界可以被调整，常见的创建方式是：

      QSplitter *splitter = new QSplitter(parent);
      QListView *listview = new QListView;
      QTreeView *treeview = new QTreeView;
      QTextEdit *textedit = new QTextEdit;
      splitter->addWidget(listview);
      splitter->addWidget(treeview);
      splitter->addWidget(textedit);

在文档中值得注意的是：添加 QLayout进入QSplitter（或者是设置layout 把splitter作为layout的parent）是不被支持的。可以使用addWidget代替之。

 

 

上代码：

void
MainWindow::setUIComponent()
{
    QSplitter * pSplitter = new QSplitter(Qt::Horizontal, ui->centralWidget);

    ///--------------------------------------------------------------

    QSplitter * LeftSplitter = new QSplitter(Qt::Vertical, pSplitter);//可以使用设置parent来代替addWidget，初始的方式是横向的

    QTextEdit * RightEdText = new QTextEdit(pSplitter);
    RightEdText->setText("right - all");

    ///--------------------------------------------------------------

    QTextEdit * LeftTextEditUp = new QTextEdit(LeftSplitter);
    LeftTextEditUp->setText("left - up");
    QTextEdit * LeftTextEditDown = new QTextEdit(LeftSplitter);
    LeftTextEditDown->setText("left - down");

    pSplitter->setStretchFactor(0,4);//设置比例
    pSplitter->setStretchFactor(1,1);

    LeftSplitter->setStretchFactor(0,4);
    LeftSplitter->setStretchFactor(1,1);
}