Make it run with Qt6

This is a huge commit. Changes:
* Obviously, make it compile
* Make it run (only scarcely tested)
* get rid of most of clang's warnings

Let's see what surprises are in store...

1 files changed, 2 insertions, 2 deletions

diff --git a/smtreemodel.h b/smtreemodel.h
index cb55186..341eecc 100644
--- a/smtreemodel.h
+++ b/smtreemodel.h
@@ -38,8 +38,8 @@ class SmTreeModel : public QAbstractItemModel {
 		virtual bool setData(const QModelIndex &index, const QVariant &value, int role);
         virtual QModelIndex find(const QVariant &value, int column = 0, const QModelIndex &pIdx = QModelIndex()) const;
         virtual QModelIndex findRecursive(const QVariant &value, int column, const QModelIndex &start) const;
-        virtual bool matchRecursive(const QModelIndex &pIdx, const QRegExp &regex, int column = 0) const;
-        virtual bool checkParents(const SmTreeItem *item, const QRegExp &regex, int column) const;
+        virtual bool matchRecursive(const QModelIndex &pIdx, const QRegularExpression &regex, int column = 0) const;
+        virtual bool checkParents(const SmTreeItem *item, const QRegularExpression &regex, int column) const;
 
 		// root + parent item
 		bool setRoot(SmTreeItem *rootItem);