QT5 代码创建控件示例

#include "mainwindow.h"

#include <QApplication>
#include <QPushButton>
#include <QLabel>
#include <QWidget>
#include <QTimer>
#include <QDateTime>
#include <QLayout>
#include <QLayoutItem>
#include <QAbstractItemModel>
#include <QAbstractItemView>
#include <QAbstractItemDelegate>
#include <QDockWidget>
#include <QStandardItemModel>


int main(int argc, char *argv[])
{
    
    
    QApplication a(argc, argv);
    MainWindow w;
    w.setWindowTitle("控件");
    w.show();


    QWidget *window = new QWidget();
    window->resize(240,320);
    window->setWindowTitle("Widget");
//    window->setWindowIcon();
    window->show();

    QLabel *label = new QLabel(window);
    QDateTime *datatime = new QDateTime(QDateTime::currentDateTime());
    label->setText(datatime->toString());
    label->move(10, 5);
    label->show();

    QPushButton *btn1 = new QPushButton("OK",window);
    btn1->move(20, 30);
    btn1->show();

    QStandardItemModel *model;
    model = new QStandardItemModel(4, 2);

    return a.exec();
}