X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c1dc9f8394c1488ad8e7d945e6f943f7b34554ce..d9359369af901bf2146b5ad6575f7aae13389a15:/include/wx/generic/treectlg.h

diff --git a/include/wx/generic/treectlg.h b/include/wx/generic/treectlg.h
index 8af90003f4..f57802cf70 100644
--- a/include/wx/generic/treectlg.h
+++ b/include/wx/generic/treectlg.h
@@ -21,14 +21,14 @@
 // forward declaration
 // -----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxGenericTreeItem;
+class WXDLLIMPEXP_FWD_CORE wxGenericTreeItem;
 
-class WXDLLEXPORT wxTreeItemData;
+class WXDLLIMPEXP_FWD_CORE wxTreeItemData;
 
-class WXDLLEXPORT wxTreeRenameTimer;
-class WXDLLEXPORT wxTreeFindTimer;
-class WXDLLEXPORT wxTreeTextCtrl;
-class WXDLLEXPORT wxTextCtrl;
+class WXDLLIMPEXP_FWD_CORE wxTreeRenameTimer;
+class WXDLLIMPEXP_FWD_CORE wxTreeFindTimer;
+class WXDLLIMPEXP_FWD_CORE wxTreeTextCtrl;
+class WXDLLIMPEXP_FWD_CORE wxTextCtrl;
 
 // -----------------------------------------------------------------------------
 // wxGenericTreeCtrl - the tree control
@@ -112,7 +112,13 @@ public:
     // ----------
 
     virtual wxTreeItemId GetRootItem() const { return m_anchor; }
-    virtual wxTreeItemId GetSelection() const { return m_current; }
+    virtual wxTreeItemId GetSelection() const
+    {
+        wxASSERT_MSG( !HasFlag(wxTR_MULTIPLE),
+                       wxT("must use GetSelections() with this control") );
+
+        return m_current;
+    }
     virtual size_t GetSelections(wxArrayTreeItemIds&) const;
 
     virtual wxTreeItemId GetItemParent(const wxTreeItemId& item) const;