Qt之QGroupBox

     QGroupBox窗口部件提供了一个有标题的组合框。

     组合框提供一个框架、一个标题和一个键盘快捷键，并且显示在它里面地其它不同窗口部件。标题在上面，键盘快捷键移动键盘焦点到组合框的一个子窗口部件，并且子窗口部件将会排列在这个框架中地一个数组中。

官方example:

//mainwindow.h #ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QtGui> class MainWindow : public QMainWindow { Q_OBJECT public: MainWindow(QWidget *parent = 0); ~MainWindow(); private: QGroupBox *createFirstExclusiveGroup(); QGroupBox *createSecondExclusiveGroup(); QGroupBox *createNonExclusiveGroup(); QGroupBox *createPushButtonGroup(); }; #endif // MAINWINDOW_H

#include "mainwindow.h" #include <QtGui> #include <QWidget> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { QGridLayout *grid = new QGridLayout; grid->addWidget(createFirstExclusiveGroup(),0,0); grid->addWidget(createSecondExclusiveGroup(),0,1); grid->addWidget(createNonExclusiveGroup(),1,0); grid->addWidget(createPushButtonGroup(),1,1); QWidget *widget = new QWidget; widget->setLayout(grid); widget->resize(480, 320); setCentralWidget(widget); setWindowTitle(tr("Group Boxes")); } MainWindow::~MainWindow() { } QGroupBox *MainWindow::createFirstExclusiveGroup() { QGroupBox *groupBox = new QGroupBox(tr("Exclusive Radio Buttons")); QRadioButton *radio1 = new QRadioButton(tr("&Radio button 1")); QRadioButton *radio2 = new QRadioButton(tr("R&adio button 2")); QRadioButton *radio3 = new QRadioButton(tr("Ra&dio button 3")); radio1->setChecked(true); QVBoxLayout *vbox = new QVBoxLayout; vbox->addWidget(radio1); vbox->addWidget(radio2); vbox->addWidget(radio3); vbox->addStretch(1); groupBox->setLayout(vbox); return groupBox; } QGroupBox *MainWindow::createSecondExclusiveGroup() { QGroupBox *groupBox = new QGroupBox(tr("E&xclusive Radio Buttons")); groupBox->setCheckable(true); groupBox->setChecked(true); QRadioButton *radio1 = new QRadioButton(tr("Rad&io button1")); QRadioButton *radio2 = new QRadioButton(tr("Radi&o buttoon2")); QRadioButton *radio3 = new QRadioButton(tr("Radio &button3")); radio1->setChecked(true); QCheckBox *checkBox = new QCheckBox(tr("Ind&ependent checkbox")); checkBox->setChecked(true); QVBoxLayout *vbox = new QVBoxLayout; vbox->addWidget(radio1); vbox->addWidget(radio2); vbox->addWidget(radio3); vbox->addWidget(checkBox); groupBox->setLayout(vbox); return groupBox; } QGroupBox *MainWindow::createNonExclusiveGroup() { QGroupBox *groupBox = new QGroupBox(tr("No-Exclusive Checkboxes")); groupBox->setFlat(true); QCheckBox *checkBox1 = new QCheckBox(tr("&Checkbox 1")); QCheckBox *checkBox2 = new QCheckBox(tr("C&heckbox 2")); checkBox2->setChecked(true); QCheckBox *tristateBox = new QCheckBox(tr("Tri-&state buttton")); tristateBox->setTristate(true);//是否启用三种状态切换 tristateBox->setCheckState(Qt::PartiallyChecked);//介于Qt::Unchecked和Qt::Checked之间 QVBoxLayout *vbox = new QVBoxLayout; vbox->addWidget(checkBox1); vbox->addWidget(checkBox2); vbox->addWidget(tristateBox); vbox->addStretch(1); groupBox->setLayout(vbox); return groupBox; } QGroupBox *MainWindow::createPushButtonGroup() { QGroupBox *groupBox = new QGroupBox(tr("&Push Button")); groupBox->setCheckable(true); groupBox->setChecked(true); QPushButton *pushButton = new QPushButton(tr("&Normal Button")); QPushButton *toggleButton = new QPushButton(tr("&Toggle Button")); toggleButton->setCheckable(true); toggleButton->setChecked(true); QPushButton *flatButton = new QPushButton(tr("&Flat Button")); flatButton->setFlat(true); QPushButton *popupButton = new QPushButton(tr("Pop&up Button")); QMenu *menu = new QMenu(this); menu->addAction((tr("&First Item"))); menu->addAction((tr("&Second Item"))); menu->addAction((tr("Third Item"))); menu->addAction(tr("F&ourth Item")); popupButton->setMenu(menu); QAction *newAction = menu->addAction(tr("Submenu")); QMenu *subMenu = new QMenu(tr("Popup Submenu")); subMenu->addAction(tr("Item 1")); subMenu->addAction(tr("Item 2")); subMenu->addAction(tr("Item 3")); newAction->setMenu(subMenu); QVBoxLayout *vbox = new QVBoxLayout; vbox->addWidget(pushButton); vbox->addWidget(toggleButton); vbox->addWidget(flatButton); vbox->addWidget(popupButton); groupBox->setLayout(vbox); return groupBox; }