Qt中的QDialog类是用来生成对话框的类,QFileDialog 类是QDialog的衍生类,主要用来生成打开文件,或是打开文件目录的对话框,或者是保存文件的对话框,下面我们一一来看代码:
1. Load File Dialog
/** * Button event for Load File button */ void QtConfigFile::on_pbLoadFile_clicked() { QString fileName = QFileDialog::getOpenFileName(this, tr("Open Configuration File"), "", tr("Configuration File (*.xml);;All Files (*)")); }
2. Save File Dialog
/** * Button event for Save File button */ void QtConfigFile::on_pbSaveFile_clicked() { QString fileName = QFileDialog::getSaveFileName(this, tr("Save Configuration File"), "", tr("Configuration File (*.xml);;All Files (*)")); }
3. Browse Directory Dialog,其中leVideoDir是QLineEdit类的对象名
/** * Button event for Video Dir Browse button */ void QtConfigFile::on_pbVideoDirBrowse_clicked() { QString directory = QFileDialog::getExistingDirectory(this, tr("Video Directory"), QDir::currentPath()); if (!directory.isEmpty()) { ui.leVideoDir->setText(directory); } }
QDesktopServices类是针对操作系统的桌面服务应用的类,我们主要用它来打开文件夹:
/** * Button event for Show Folder button */ void QtConfigFile::on_pbShowFolder_clicked() { QDesktopServices::openUrl( QUrl::fromLocalFile( QDir::currentPath() ) ); }
时间: 2024-10-26 08:54:58