显示图片代码如下:
void Widget::openPictureSlot()
{
qDebug()<<"openpicture";
QImage *image=new QImage("E:/code/picture_test/images/imgMB.bmp");
QImage* imgScaled = new QImage;
*imgScaled=image->scaled(ui->label->width(),ui->label->height(),Qt::KeepAspectRatio);
ui->label->setPixmap(QPixmap::fromImage(*imgScaled));
}