c++ - CTabView syncronize after removeview -

i have been struggling problem weeks. have mdi app, explore style. in right side, have ctabview, has 5 clistviews , 1 cformview. depending on choose in leftview (ctreeview), should remove (or add) formview ctabview.

the ctabview re-arranged drag , drop (you drag ctestformview first tab), , stored in order.

here link have sample project simulates problem:

explore sample project

in left view, have:

as select "without test-form-view" item, ctestformview removed ctabview, using ctabview::removeview.

to reproduce that, can following simple steps:

1. go "with test-form-view"
2. drag ctestformview first tab
3. select, let's say, cexplorelistview4

4. select "without test-form-view" item in left view

the "ctestformview" has disappeared ctabview, , first tab selected. right-click on cexplorelistview1, , see context menu of cexplorelistview4, not context menu of cexplorelistview1.

if select treeitem leftview ("with-test-form-view"), add ctestformview, listviews ctabview not redrawn correctly. there bug in ctabview ?

with following code remove view in ctabview:

removeview(ntabindex); 

this code used add view ctabview dynamically:

int cexploretabbedview::addview(cruntimeclass* pviewclass, const cstring& strviewlabel, int iindex /*= -1*/, ccreatecontext* pcontext/* = null*/, bool baftercreation/* = false*/) { assert_valid(this); ensure(pviewclass != null); ensure(pviewclass->isderivedfrom(runtime_class(cview)));  cview* pview = dynamic_downcast(cview, pviewclass->createobject()); assert_valid(pview);  if(! pview->create(null, _t(""), ws_child | ws_visible, crect(0, 0, 0, 0), &m_wndtabs, (uint)-1, pcontext)) {     trace1(_t("ctabview:failed create view '%s'\n"), pviewclass->m_lpszclassname);     return -1; }  cdocument* pdoc = getdocument(); if (pdoc != null) {     assert_valid(pdoc);      bool bfound = false;     (position pos = pdoc->getfirstviewposition();! bfound && pos != null;)     {         if(pdoc->getnextview(pos) == pview)             bfound = true;     }     if(! bfound)         pdoc->addview(pview); }  pview->setparent(this);  if(baftercreation)     pview->sendmessage(wm_initialupdate, 0, 0);  m_wndtabs.inserttab(pview, strviewlabel, iindex);  int ntabs = m_wndtabs.gettabsnum(); return ntabs - 1; } 

could me figure out why removing/adding view ctabview causing problem?