网格布局（QGridLayout）

#include <QApplication> #include <QWidget> #include <QPushButton> #include <QGridLayout> int main(int argc, char *argv[]) { QApplication app(argc, argv); QWidget *widget = new QWidget(); QGridLayout *layout = new QGridLayout(widget); QPushButton *button1 = new QPushButton("Button 1"); QPushButton *button2 = new QPushButton("Button 2"); QPushButton *button3 = new QPushButton("Button 3"); layout->addWidget(button1, 0, 0); // 第一行，第一列 layout->addWidget(button2, 0, 1); // 第一行，第二列 layout->addWidget(button3, 1, 0, 1, 2); // 第二行，从第一列开始，占据两列 widget->setLayout(layout); widget->show(); return app.exec(); }