Qt之HelloWord(Qt Creator 10)

 
#include "widget.h"
#include "ui_widget.h"
#include <QPushButton>
 
 
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    QPushButton * btn=new QPushButton;
    //show以顶层方式弹出窗口坤健
//    btn->show();
    //让队形依赖于widget窗口
    btn->setParent(this);
    //显示文本
    btn->setText("Hello,World");
}
 
Widget::~Widget()
{
    delete ui;
}