+ // wrapper around Header_InsertItem(): insert the item using information
+ // from the given column at the given index
+ void DoInsertItem(const wxHeaderColumn& col, unsigned int idx);
+
+ // get the number of currently visible items: this is also the total number
+ // of items contained in the native control
+ int GetShownColumnsCount() const;
+
+ // due to the discrepancy for the hidden columns which we know about but
+ // the native control does not, there can be a difference between the
+ // column indices we use and the ones used by the native control; these
+ // functions translate between them
+ //
+ // notice that MSWToNativeIdx() shouldn't be called for hidden columns and
+ // MSWFromNativeIdx() always returns an index of a visible column
+ int MSWToNativeIdx(int idx);
+ int MSWFromNativeIdx(int item);
+
+ // this is the same as above but for order, not index
+ int MSWToNativeOrder(int order);
+ int MSWFromNativeOrder(int order);
+
+ // get the event type corresponding to a click or double click event
+ // (depending on dblclk value) with the specified (using MSW convention)
+ // mouse button
+ wxEventType GetClickEventType(bool dblclk, int button);
+
+
+ // the number of columns in the control, including the hidden ones (not
+ // taken into account by the native control, see comment in DoGetCount())
+ unsigned int m_numColumns;
+
+ // this is a lookup table allowing us to check whether the column with the
+ // given index is currently shown in the native control, in which case the
+ // value of this array element with this index is 0, or hidden
+ //
+ // notice that this may be different from GetColumn(idx).IsHidden() and in
+ // fact we need this array precisely because it will be different from it
+ // in DoUpdate() when the column hidden flag gets toggled and we need it to
+ // handle this transition correctly
+ wxArrayInt m_isHidden;
+
+ // the order of our columns: this array contains the index of the column
+ // shown at the position n as the n-th element
+ //
+ // this is necessary only to handle the hidden columns: the native control
+ // doesn't know about them and so we can't use Header_GetOrderArray()
+ wxArrayInt m_colIndices;
+