1.horizontal line 和vertical line 的使用
horizontal line 和vertical line 实际上是由QFame类，设置相应的参数来实现的；而不是由单独的类来实现的，例如（QHorizontalLine/QVerticalLine）；
1.1.控件拖拽
1.2.代码实现
1 QFrame *line = new QFrame(); 2 line->setFrameShape(QFrame::HLine); 3 line->setFrameShadow(QFrame::Plain); 4 //line->raise();//顶层展示
2.horizontal line 和vertical line 在QGridLayout 中的应用
以下为代码实现：
1 #include "mainwindow.h"
2 #include "ui_mainwindow.h"
3 #include "testform.h"
4 #include <QDebug>
5 #include <QGridLayout>
6 #include <QHBoxLayout>
7 #include <QPushButton>
8 #include <QLabel>
9
10
11 MainWindow::MainWindow(QWidget *parent) : 12 QMainWindow(parent), 13 ui(new Ui::MainWindow) 14 { 15 ui->setupUi(this); 16
17 QGridLayout *m_Layout = new QGridLayout(this); 18 m_Layout->setSpacing(5);//setVerticalSpacing()/setHorizontalSpacing() 19
20 //1.创建标题1
21 QLabel *m_title = new QLabel(tr("题目1")); 22 m_title->setMinimumHeight(50); 23 m_title->setMaximumHeight(60); 24 m_title->setAlignment(Qt::AlignCenter); 25 m_Layout->addWidget(m_title, 0, 0, 1, 1); 26
27 //分割线
28 QFrame *line = new QFrame(); 29 line->setFrameShape(QFrame::HLine); 30 line->setFrameShadow(QFrame::Plain); 31 //line->raise();//顶层展示
32 m_Layout->addWidget(line,1,0,1,1); 33
34 //2.创建标题2
35 m_title = new QLabel(tr("题目2")); 36 m_title->setAlignment(Qt::AlignCenter);//Qt::AlignHCenter|Qt::AlignTop
37 m_Layout->addWidget(m_title, 2, 0, 1, 1); 38
39 resize(400, 4*30); 40 ui->centralWidget->setLayout(m_Layout); 41 } 42
43 MainWindow::~MainWindow() 44 { 45 delete ui; 46 }
呈现效果：
