使用Qfilesystemmodel的QTreeview,实现:当前选中行及下面8行的字体变成蓝色,给出C++完整示例
时间: 2024-02-17 11:00:22 浏览: 104
下面是一个使用QFileSystemModel和QTreeView实现当前选中行及下面8行的字体变成蓝色的C++示例代码:
```cpp
#include <QtWidgets>
class TreeView : public QWidget
{
public:
TreeView(QWidget *parent = nullptr) : QWidget(parent)
{
QFileSystemModel *model = new QFileSystemModel;
model->setRootPath(QDir::currentPath());
QTreeView *treeView = new QTreeView(this);
treeView->setModel(model);
treeView->setSelectionMode(QAbstractItemView::SingleSelection);
treeView->setSelectionBehavior(QAbstractItemView::SelectRows);
treeView->setUniformRowHeights(true);
treeView->setColumnHidden(1, true);
treeView->setColumnHidden(2, true);
treeView->setColumnHidden(3, true);
connect(treeView, &QTreeView::clicked, this, &TreeView::onTreeViewClicked);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->addWidget(treeView);
setLayout(layout);
}
private:
void onTreeViewClicked(const QModelIndex &index)
{
QTreeView *treeView = qobject_cast<QTreeView *>(sender());
if (treeView) {
QItemSelectionModel *selectionModel = treeView->selectionModel();
if (selectionModel) {
QModelIndexList selectedRows = selectionModel->selectedRows();
QStyleOptionViewItem option = treeView->viewOptions();
for (const QModelIndex &row : selectedRows) {
for (int i = 0; i < 9; ++i) {
option.state |= QStyle::State_Selected;
option.palette.setColor(QPalette::Text, Qt::blue);
treeView->itemDelegate()->paint(nullptr, &option, row);
row = row.sibling(row.row() + 1, row.column());
}
}
}
}
}
};
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
TreeView w;
w.show();
return a.exec();
}
```
这个示例创建了一个QTreeView,使用QFileSystemModel作为数据模型,并且实现了点击行时将当前行及下面8行的字体变成蓝色的功能。
阅读全文