All,

I'm using a tree control stuck in a CDialogBar docked to the edge of my
frame window, and I'm intercepting two notifications: TVN_SELCHANGE and
NM_RCLICK. My problem is as follows:

Upon intercepting the NM_RCLICK notification, which I intend to use to
display a popup context menu for individual tree items, I find that the
control's perception of the selected item has not changed, even though the
selection has changed on screen. Thus, when I attempt to retrieve the item
rectangle so that I can display the menu at the right position, I get the
previous item, not the new one (and don't even ask me how {*filter*}GetItemRect()
seems to be). My questions are therefore:

1. How do I get a right click selection change to register a TVN_SELCHANGE
BEFORE a NM_RCLICK comes in?

2. Does CTreeCtrl->GetItemRect() work properly (it seems to always return a
rect.left of 0)?

3. Are there better ways of doing this?

No probs, found the solution further down the messages using HitTest().
Cheers!

I've done the same thing in the following way, and it works fine:

void CAlsTreeDlg::OnRclickAlstree(NMHDR* pNMHDR, LRESULT* pResult)
{
 *pResult = 0;
 // TODO: Add your control notification handler code here
   UINT      nFlags;
   CPoint    curPoint;
   HTREEITEM  rightButtonItemP;

   GetCursorPos (&curPoint);
   // alsTree is a member varibale of the class containing a pointer to
   // the tree control
   alsTree->ScreenToClient (&curPoint);
   rightButtonItemP = alsTree->HitTest (curPoint, &nFlags);

   if (rightButtonItemP != NULL)
   {
      RECT itemRect;
      if (alsTree->GetItemRect (rightButtonItemP, &itemRect, TRUE))
      {
         CMenu treePopup;
         alsTree->ClientToScreen (&itemRect);
         treePopup.LoadMenu (IDR_TREEPOPUP);
         treePopup.GetSubMenu(0)->TrackPopupMenu (TPM_LEFTALIGN,
itemRect.right, itemRect.top, this);
         treePopup.DestroyMenu ();
      }
   }

The problem is, that the selection changes AFTER processing the right mouse
click.
I've found this suggestion somewhere in the online help.

Hope this helps.
--
Dirk Bohnemeyer
p.s. For e-mail remove one of the 'o's from my address.
-------------------------------------------------------

Yes that is the only remaining problem now. Anybody got any solutions?

Thanks Dirk.

You can change the selection yourself to the entry pre-selected by the right
mouse button.
Taking the code of my last example you only have to add
   alsTree->SelectItem (rightButtonItemP);

--
Dirk Bohnemeyer
p.s. For e-mail remove one of the 'o's from my address.
-------------------------------------------------------

As you've noticed, but apparently not accepted, right clicking on an item in
a tree control does not change the selection.  You should display the
context menu for the item you got back from the hit test, not the item that
is selected.

Thanks all - all problems resolved with a mixture of things from different
people.

Cheerio.