表视图中的固定/冻结行

Question

我有一个TableView，显示QSortFilterProxyModel中包含的信息（其模型是QAbstractTableModel）

有没有办法修复/冻结特定属性设置为 true 的所有行TableView's顶部，同时保持其他行的过滤和排序？

Answer 1

为了将特定行始终放在表视图的顶部，我在QSortFilterProxyModel的lessThan方法中添加了以下逻辑：

// Get left and right row
int leftRow = left.row();
int rightRow = right.row();
// Get specific data from left row
QModelIndex leftIndex = sourceModel()->index(leftRow, SPECIFIC_DATA_INDEX);
QString leftProperty = sourceModel()->data(leftIndex).toString();
// Get specific data from right row
QModelIndex  rightIndex = sourceModel()->index(rightRow, SPECIFIC_DATA_INDEX);
QString rightProperty = sourceModel()->data(rightIndex).toString();
if(leftProperty .compare("Invalid") == 0) // put left on top if it has a specific property
    if(sortOrder() == Qt::AscendingOrder) {
        return true;
    } else {
        return false;
    }
} else if(rightProperty .compare("Invalid") == 0) { // put right on top if it has a specific property
    if(sortOrder() == Qt::AscendingOrder) {
        return false;
    } else {
        return true;
    }
}