QT笔记之QFileDialog

就是平时打开文件时看到的对话框，这里只是简单的演示，并非真正的打开

void MainWindow::open(){    QString path=QFileDialog::getOpenFileName(this,tr("Open file"),".",tr("*.dll *.txt *.jpg　*.png"));    if(path.length()==0)    {        QMessageBox::information(NULL,tr("Info"),tr("You select anything"));    }    else    {     QMessageBox::information(NULL, tr("Info"),tr("You select ") + path);    }}