1 files changed, 4 insertions, 3 deletions
diff --git a/src/widgets/graphicsview/qsimplex_p.h b/src/widgets/graphicsview/qsimplex_p.h
index 842044fa7f..3fa3417eaf 100644
--- a/src/widgets/graphicsview/qsimplex_p.h
+++ b/src/widgets/graphicsview/qsimplex_p.h
@@ -149,9 +149,10 @@ struct QSimplexConstraint
 
 class QSimplex
 {
+    Q_DISABLE_COPY(QSimplex)
 public:
     QSimplex();
-    virtual ~QSimplex();
+    ~QSimplex();
 
     qreal solveMin();
     qreal solveMax();
@@ -163,8 +164,8 @@ public:
 
 private:
     // Matrix handling
-    qreal valueAt(int row, int column);
-    void setValueAt(int row, int column, qreal value);
+    inline qreal valueAt(int row, int column);
+    inline void setValueAt(int row, int column, qreal value);
     void clearRow(int rowIndex);
     void clearColumns(int first, int last);
     void combineRows(int toIndex, int fromIndex, qreal factor);