QT-widget窗口弹出

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QMessageBox>
#include<form.h>
#pragma execution_character_set("utf-8&

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include<QMessageBox>
#include<form.h>
#pragma execution_character_set("utf-8&