QT用主窗体用标签显示图片

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QImage myImage;
    myImage.load("e:\\tmp.jpg");
    ui->labelimage->setPixmap(QPixmap::fromImage(myImage).scaled(ui->labelimage->size()));
}
 
MainWindow::~MainWindow()
{
    delete ui;
}