int imageId)
{
wxCHECK_MSG( page, false, _T("NULL page in wxBookCtrl::InsertPage()") );
- wxCHECK_MSG( nPage < m_pages.size(), false,
+ wxCHECK_MSG( nPage <= m_pages.size(), false,
_T("invalid page index in wxBookCtrl::InsertPage()") );
m_pages.Insert(page, nPage);