实现文件图片浏览功能，并把路径输入文本框

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1.新建一个按钮

QPushButton *browsebtn;
browsebtn = new QPushButton(this);
browsebtn->setText(QString::fromLocal8Bit("浏览"));
connect(browsebtn, SIGNAL(clicked(bool)), this, SLOT(openImage()));

2.实现openImage()

void Choicequestion::openImage()
{
	QString fileName =QFileDialog::getOpenFileName(this,
		QString::fromLocal8Bit("浏览"), QString(),
		tr("Image Files (*.png *.jpg *.bmp)"));
	//qDebug() << fileName;
	if (!fileName.isEmpty())
	{
		lineF->setText(fileName);
	}
	//slotFile();
}