QT 文件知识

打开文件及过滤文件后缀：

QString fileName = QFileDialog::getOpenFileName(this, //当前tr("Open File"),//标题                                                "/home",//起始路径 QDir::currentPath() 程序当前路径                                                tr("Images (*.png *.xpm *.jpg)")//过滤);   //多文件过滤：   QString path = QFileDialog::getOpenFileName(this,"Select File","/home","txt(*.txt);;image(*.jpg)");