Didn't you want it?

You asked to prevent dock to left if another panes was docked on left side...

thanks oleg. ^^*

There is 1 problem.

Only 1 pane docks in docking pane's case that several pane has attached.

Remainder panes do not dock again in situation that 1 pane has docked.

I am sorry, but ask reply again.

Thank you.

Hi,

Ok, I see now.  You can catch XTP_DPN_ACTIONevent in OnDockingPaneNotify handler and cancel soem actions:

 if (wParam == XTP_DPN_ACTION)
 {
  XTP_DOCKINGPANE_ACTION* pAction = (XTP_DOCKINGPANE_ACTION*)lParam;

  if (pAction->action == xtpPaneActionDocking && pAction->pDockContainer && pAction->pDockContainer->GetType() == xtpPaneTypeTabbedContainer)
  {
   if (((CXTPDockingPaneTabbedContainer*)pAction->pDockContaine r)->GetParentFrame() == this)
   {
    XTPDockingPaneDirection directionPane = m_paneManager.GetPaneDirection(pAction->pDockContainer);& nbsp;   

    if (((directionPane == xtpPaneDockBottom) || (directionPane == xtpPaneDockTop)) &&
     ((pAction->dockDirection == xtpPaneDockBottom) || (pAction->dockDirection == xtpPaneDockTop)))
    {
     pAction->bCancel = TRUE;
     return TRUE;
    }

    if (((directionPane == xtpPaneDockLeft) || (directionPane == xtpPaneDockRight)) &&
     ((pAction->dockDirection == xtpPaneDockLeft) || (pAction->dockDirection == xtpPaneDockRight)))
    {
     pAction->bCancel = TRUE;
     return TRUE;
    }
   }  
  }

  if (pAction->action == xtpPaneActionDocking && (pAction->pDockContainer == m_paneManager.GetTopPane() ||
   pAction->pDockContainer == m_paneManager.GetClientPane()))
  {
   POSITION pos = m_paneManager.GetPaneList().GetHeadPosition();
   while (pos)
   {
    CXTPDockingPane* pPane = m_paneManager.GetPaneList().GetNext(pos);
    if (!pPane->IsClosed() && !pPane->IsFloating() && pPane != pAction->pPane && pAction->dockDirection == m_paneManager.GetPaneDirection(pPane))
    {
     pAction->bCancel = TRUE;
     return TRUE;
    }
   }

  }

  
  return TRUE;
 }
 

It sees and solved pane actions sample that dock only left. ^^~

I don't understand :(

You want to prevent docking to top/right/bottom? and allow only to dock to left?

thank you. your reply.

That I wish is to limit docking by user.

When user does docking in floating state or drag and drop, it wants to become by one line.

Is there method?

CXTPDockingPane1* pPane= m_paneManager.FindPane(ID_1),

m_paneManager.DockPane(pPane, xtpPamneDockLeft, NULL);

and for all other pane:

m_paneManager.DockPane(m_paneManager.FindPane(ID_2), xtpPaneDockTop, pPane);

m_paneManager.DockPane(m_paneManager.FindPane(ID_3), xtpPaneDockTop, pPane);

m_paneManager.DockPane(m_paneManager.FindPane(ID_4), xtpPaneDockTop, pPane);

How do you arrange docking panes in only 1 line?

sorry.
I do not well English.

There is 5 docking panes.

condition 1:
All pane becomes docking on left side.
condition 2:
All pane must become docking all in 1 line.

How must you do if do with upside.

thank you.

** Xtreme Toolkit Pro 9.8