ui中的控件要使用ui来指向：ui->xxx控件名称。
Buttons
Push Button：普通按钮
Tool Button：可以隐藏文字只显示图片
Radio Button：单选框
Check Box：复选框。可以有三种状态，对勾选择为2、方块为1(tristate)、不选为0。
1 connect(ui->checkBox, &QCheckBox::stateChanged, [=](int status){
2 if (0 == status) {
3 QMessageBox::information(this, "information0", QString(status));
4 } else if (1 == status) {
5 QMessageBox::information(this, "information1", QString(status));
6 } else {
7 QMessageBox::information(this, "information2", QString(status));
8 }
9 });
Containers
Group Box：可以将单选框/复选框分组，在本控件内的单选框/复选框为一组。
Widget：
Display Widgets
Label：可以显示文字、图片、动图。
1 ui->label->setPixmap(QPixmap(":/xxx/xxx.png")); //添加图盘对象
2 ui->label->setScaledContents(true); //设置填充
3
4 QMovie *mv = new QMovie(":/xxx/xxx.png");
5 ui->label->setMovie(mv); //添加动图
6 ui->label->setScaledContents(true);
7 mv->start(); //开始动图
Item Views
List View
Tree View
Table View
Column View
Item Widgets：继承自Item Views，功能较多，建议使用
List Widget
1 QStringList names;
2 names << "55555" << "44444" << "33333" << "22222" << "11111";
3 ui->listWidget->addItems(names);
4 connect(ui->listWidget, &QListWidget::currentRowChanged, [=](int currentRow){
5 qDebug() << QString("选择的是第%1行").arg(currentRow);
6 });
Tree Widget
1 //设置头标签
2 ui->treeWidget->setHeaderLabels(QStringList() << "人物" << "人物简介");
3 //创建项
4 QTreeWidgetItem *item1 = new QTreeWidgetItem(QStringList() << "A公司");
5 QTreeWidgetItem *item2 = new QTreeWidgetItem(QStringList() << "B公司");
6 QTreeWidgetItem *item3 = new QTreeWidgetItem(QStringList() << "C公司");
7 //添加top项
8 ui->treeWidget->addTopLevelItem(item1);
9 ui->treeWidget->addTopLevelItem(item2);
10 ui->treeWidget->addTopLevelItem(item3);
11 //创建项
12 QTreeWidgetItem *item1_1 = new QTreeWidgetItem(QStringList() << "张三" << "你好");
13 QTreeWidgetItem *item1_2 = new QTreeWidgetItem(QStringList() << "李四" << "你好");
14 QTreeWidgetItem *item2_1 = new QTreeWidgetItem(QStringList() << "张三" << "你好");
15 QTreeWidgetItem *item2_2 = new QTreeWidgetItem(QStringList() << "李四" << "你好");
16 QTreeWidgetItem *item3_1 = new QTreeWidgetItem(QStringList() << "张三" << "你好");
17 QTreeWidgetItem *item3_2 = new QTreeWidgetItem(QStringList() << "李四" << "你好");
18
19 //添加子项
20 item1->addChild(item1_1);
21 item1->addChild(item1_2);
22 item2->addChild(item2_1);
23 item2->addChild(item2_2);
24 item3->addChild(item3_1);
25 item3->addChild(item3_2);
Table Widget
1 //设置行列
2 ui->tableWidget->setRowCount(5);
3 ui->tableWidget->setColumnCount(3);
4 //设置水平标签头
5 ui->tableWidget->setHorizontalHeaderLabels(QStringList() << "姓名" << "性别" << "年龄");
6 //设置表格项
7 QStringList names;
8 names << "A" << "B" << "C" << "D" << "E";
9 QStringList sex;
10 sex << "男" << "女" << "男" << "女" << "男";
11 for (int i = 0; i < 5; i++) {
12 ui->tableWidget->setItem(i, 0, new QTableWidgetItem(names[i]));
13 ui->tableWidget->setItem(i, 1, new QTableWidgetItem(sex[i]));
14 ui->tableWidget->setItem(i, 2, new QTableWidgetItem(QString::number(20 + i)));
15 }
