popup menue in GUI_VisualStudio7 Panes

I need to add a POPUP MENU to the panes (like ClassView,..) in a similar GUI_visualstudio 7. Can anyone please help me or direct me the right place for info.  Thanks in advance.

Oleg, thanks for your quick response. 

 I think my post wasn't clear.  The right-click popup menu I need is in the tree area.  Here is what I got so far ( picking up from some of the posts), but still not there yet. 

I derived CMatTreeCtrl from CXTTreeCtrl and used it in place of CXTTreeCtrl in mainframe (of GUI-visual 7).  In CMatTreeCtrl, I have:

void CMatTreeCtrl::OnNMRclick(NMHDR *pNMHDR, LRESULT *pResult)

{

CPoint point;

GetCursorPos(&point);

CMenu menu;

VERIFY(menu.LoadMenu(IDR_POPUP_MATTREE));

CMenu* pPopup = menu.GetSubMenu(0);

ASSERT(pPopup != NULL);

CWnd* pWndPopupOwner = this;

while (pWndPopupOwner->GetStyle() & WS_CHILD)

pWndPopupOwner = pWndPopupOwner->GetParent();

pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y,

pWndPopupOwner);

*pResult = 0;

}

When I right-click the tree control area, the popup menu (IDR_POPUP_MATTREE) appears, BUT I CAN'T ROUTE ANY COMMAND SUCH AS:

void CMatTreeCtrl:OnTest()

{

AfxMessageBox("Clicked");

}

where Test is an item on the menu (ID_TEST)

Any more helps are appreciated. Thanks