问题
I would like to build a dialog similar to QFileDialog::getExistingDirectory() for which the OK-button only is enabled when the selected directory contains certain files.
I know I cannot achieve this with QFileDialog, instead I would have to come up with my own QDialog that has a QTreeView coupled to a QFileSystemModel.
- How can I limit the QTreeView to directories?
- How can I get the currently selected directory so I can check whether it contains some filenames?
回答1:
- Use setFilter on the QFileSystemModel with either the QDir::AllDirs or QDir::Dirs option, probably the former.
- connect the activated(QModelIndex) signal from the treeview to a custom slot of yours. In this slot pass the QModelIndex to the model's fileInfo/filePath method, to retrieve the info/path for the selected directory, then perform your check
Here is an example:
void slotDirectorySelected( const QModelIndex & index )
{
QFileInfo info = fileSystemModel->fileInfo( index );
QDir selectedDir = info.dir();
foreach( const QString entry, selectedDir.entryList() ) {
// do something with the entry
}
}
来源:https://stackoverflow.com/questions/3288924/qfiledialog-for-directories-that-have-certain-content