VC++ でツリー コントロールを作成しましたが、子ノードを選択できません。助言がありますか?
m_pTree->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP |
TVS_HASLINES | TVS_HASBUTTONS | TVS_LINESATROOT |
TVS_SINGLEEXPAND | TVS_SHOWSELALWAYS |
TVS_TRACKSELECT,CRect(10, 10, 200, 240), this, 0x1221);
hTree=m_pTree->InsertItem(_T("SoftWare Production") , TVI_ROOT);
hCompany=m_pTree->InsertItem(_T("Microsoft"),hTree);
m_pTree->InsertItem(_T("Office") , hCompany);
m_pTree->InsertItem(_T("Visual Studio") , hCompany);
m_pTree->InsertItem(_T("Servers") ,hCompany , TVI_LAST);
m_pTree->Expand(hCompany, TVE_EXPAND);
hCompany=m_pTree->InsertItem(_T("Linux"),hTree);
m_pTree->InsertItem(_T("Open Office") , hCompany);
m_pTree->InsertItem(_T("QMail") , hCompany);
m_pTree->InsertItem(_T("Apache") ,hCompany,TVI_LAST);
m_pTree->Expand(hCompany, TVE_EXPAND);