Merge branch 'qt-listctrl'

New version of wxListCtrl for wxQt, supporting virtual list controls,
checkboxes, sorting and with other fixes.

See https://github.com/wxWidgets/wxWidgets/pull/1551

samples/listctrl/listtest.cpp

@@ -1543,7 +1543,8 @@ void MyListCtrl::OnContextMenu(wxContextMenuEvent& event)
         {
             point = ScreenToClient(point);
         }
-        ShowContextMenu(point);
+        int flags;
+        ShowContextMenu(point, HitTest(point, flags));
     }
     else
     {
@@ -1555,10 +1556,10 @@ void MyListCtrl::OnContextMenu(wxContextMenuEvent& event)
 }
 #endif
 
-void MyListCtrl::ShowContextMenu(const wxPoint& pos)
+void MyListCtrl::ShowContextMenu(const wxPoint& pos, long item)
 {
     wxMenu menu;
-
+    menu.Append(wxID_ANY, wxString::Format("Menu for item %ld", item));
     menu.Append(wxID_ABOUT, "&About");
     menu.AppendSeparator();
     menu.Append(wxID_EXIT, "E&xit");

samples/listctrl/listtest.h

@@ -78,7 +78,7 @@ public:
     virtual bool IsItemChecked(long item) const wxOVERRIDE;
 
 private:
-    void ShowContextMenu(const wxPoint& pos);
+    void ShowContextMenu(const wxPoint& pos, long item);
     wxLog *m_logOld;
     void SetColumnImage(int col, int image);