CTreeCtrl 右键选中节点并显示菜单

void C***Dlg::OnRclickTreeKey(NMHDR* pNMHDR, LRESULT* pResult) { // TODO: Add your control notification handler code here // 选中当前右键点击的节点 POINT pos ; if(!GetCursorPos(&pos))    return ; m_KeyList.ScreenToClient(&pos); UINT uFlags; HTREEITEM hItem = m_KeyList.HitTest(pos, &uFlags); if ((hItem != NULL) && (TVHT_ONITEM & uFlags)) {    m_KeyList.Select(hItem, TVGN_CARET); } // 显示菜单 CRect rect ; this->GetClientRect(&rect) ; ClientToScreen(&rect) ; m_KeyList.ClientToScreen(&pos); int iCode= rect.PtInRect(pos) ; CMenu m_Menu,*p_Menu=NULL ; if(iCode) {    m_Menu.LoadMenu( IDR_MENU_REG) ;    p_Menu = (CMenu*) m_Menu.GetSubMenu(0);    if( p_Menu != NULL)     p_Menu->TrackPopupMenu( TPM_RIGHTBUTTON|TPM_LEFTALIGN, pos.x, pos.y, this);    p_Menu = NULL;    //mouse_event(MOUSEEVENTF_RIGHTUP, pos.x, pos.y, 0, NULL); } // AfxMessageBox(m_szMsg); *pResult = 0; }