avoid creating and immediately destroying a wxGraphicsContext when creating a wxDC...

[wxWidgets.git] / include / wx / headercol.h

diff --git a/include/wx/headercol.h b/include/wx/headercol.h
index 815c41f82a77cf2f81afd9c51f243624ba066c8e..58736edb0262b3b00a5b6ba9fb9994ea3968879e 100644 (file)
--- a/include/wx/headercol.h
+++ b/include/wx/headercol.h
@@ -186,8 +186,12 @@ public:
     virtual void SetHidden(bool hidden)
         { ChangeFlag(wxCOL_HIDDEN, hidden); }
 
-    virtual void SetAsSortKey(bool sort = true) = 0;
-    void UnsetAsSortKey() { SetAsSortKey(false); }
+    // This function can be called to indicate that this column is not used for
+    // sorting any more. Under some platforms it's not necessary to do anything
+    // in this case as just setting another column as a sort key takes care of
+    // everything but under MSW we currently need to call this explicitly to
+    // reset the sort indicator displayed on the column.
+    virtual void UnsetAsSortKey() { }
 
     virtual void SetSortOrder(bool ascending) = 0;
     void ToggleSortOrder() { SetSortOrder(!IsSortOrderAscending()); }
@@ -249,10 +253,15 @@ public:
     virtual void SetFlags(int flags) { m_flags = flags; }
     virtual int GetFlags() const { return m_flags; }
 
-    virtual void SetAsSortKey(bool sort = true) { m_sort = sort; }
     virtual bool IsSortKey() const { return m_sort; }
+    virtual void UnsetAsSortKey() { m_sort = false; }
+
+    virtual void SetSortOrder(bool ascending)
+    {
+        m_sort = true;
+        m_sortAscending = ascending;
+    }
 
-    virtual void SetSortOrder(bool ascending) { m_sortAscending = ascending; }
     virtual bool IsSortOrderAscending() const { return m_sortAscending; }
 
 private: