+void wxListMainWindow::SetItemStateAll(long state, long stateMask)
+{
+ if ( IsEmpty() )
+ return;
+
+ // first deal with selection
+ if ( stateMask & wxLIST_STATE_SELECTED )
+ {
+ // set/clear select state
+ if ( IsVirtual() )
+ {
+ // optimized version for virtual listctrl.
+ m_selStore.SelectRange(0, GetItemCount() - 1, state == wxLIST_STATE_SELECTED);
+ Refresh();
+ }
+ else if ( state & wxLIST_STATE_SELECTED )
+ {
+ const long count = GetItemCount();
+ for( long i = 0; i < count; i++ )
+ {
+ SetItemState( i, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
+ }
+
+ }
+ else
+ {
+ // clear for non virtual (somewhat optimized by using GetNextItem())
+ long i = -1;
+ while ( (i = GetNextItem(i, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED)) != -1 )
+ {
+ SetItemState( i, 0, wxLIST_STATE_SELECTED );
+ }
+ }
+ }
+
+ if ( HasCurrent() && (state == 0) && (stateMask & wxLIST_STATE_FOCUSED) )
+ {
+ // unfocus all: only one item can be focussed, so clearing focus for
+ // all items is simply clearing focus of the focussed item.
+ SetItemState(m_current, state, stateMask);
+ }
+ //(setting focus to all items makes no sense, so it is not handled here.)
+}
+