如题，重写QFileSystemModel的具体代码如下：
- //FileSystemModel.cpp
- FileSystemModel::FileSystemModel(QObject *parent)
- : QFileSystemModel(parent)
- {
- this->setRootPath(QString(""));
- this->setFilter(QDir::Drives | QDir::AllDirs | QDir::NoDotAndDotDot |QDir::Dirs|QDir::Hidden|QDir::System);
- }
- int FileSystemModel::columnCount(const QModelIndex &parent) const
- {
- Q_UNUSED(parent);
- return 1;
- }
- QVariant FileSystemModel::data(const QModelIndex &index, int role) const
- {
- if(index.isValid())
- {
- if(role == Qt::DecorationRole)
- {
- return QVariant();
- }
- else if(role == Qt::DisplayRole)
- {
- if(this->fileInfo(index).isRoot())
- {
- return QDir::toNativeSeparators(QString("%1").arg(this->fileInfo(index).absolutePath()));
- }
- }
- }
- return QFileSystemModel::data(index, role);
- }
- void FileSystemModel::sort(int column, Qt::SortOrder order)
- {
- //此处如何排序，从C:\到Z:\由上而下显示在QTreeView上
- emit layoutAboutToBeChanged();
- const int nodeCount = this->rowCount();
- for(int i = 0; i < nodeCount; ++i)
- {
- for(int j = i+1; j < nodeCount; ++j)
- {
- char s1 = this->index(i, column).data().toString().at(0).unicode();
- char s2 = this->index(j, column).data().toString().at(0).unicode();
-
- }
- }
- QModelIndexList newList;
- const int numOldNodes = this->rowCount();
- newList.reserve(numOldNodes);
- emit layoutChanged();
- }
- //main.cpp
- FileSystemModel *model = new FileSystemModel;
- QTreeView *treeView = new QTreeView(this);
- treeView->setModel(model);
- treeView->show();
排序后，QTreeView上
显示如下：
C:\
D:\
E:\
...
Z:\
从上到下，由C:\开始递增，若磁盘不存在，则不显示，以上如何重写sort能实现FileSystemModel的排序呢？各位大佬，不知道你们有做过吗？欢迎大佬们指点一二，小弟感激不尽！！
