QT笔记-Label控件显示图片

 1、Label控件动态显示图片

//动态显示图片1
int DeviceEdit::OnLensPic(bool checked)
{
	AfCd::cd();
	QImage img;
	img.load("UI/lens.bmp");
	QImage imgScaled;
	imgScaled = img.scaled(ui.labelPic->size(), Qt::KeepAspectRatio);//默认保持原图的宽高比  以label大小为大小
	ui.labelPic->setPixmap(QPixmap::fromImage(imgScaled));
	return 0;
}

//动态显示图片1-无锯齿
int DeviceEdit::OnLensPic(bool checked)
{
    string strpath = m_strPathImages + "\\menu.png";
	ui.label_shengchan->setFixedSize(45, 45);
	ui.label_shengchan->setScaledContents(true);
	QPixmap topMsgIcon(GBK::ToUnicode(strpath));
	ui.label_shengchan->setPixmap(topMsgIcon);
}

2、 Label控件设计界面显示图片