I want to detect the updated pane window's size as follows:

 

CMainFrame::OnDockingPaneNotify(WPARAM wParam, LPARAM lParam)

    if (wParam == XTP_DPN_ACTION)

        XTP_DOCKINGPANE_ACTION* pAction = (XTP_DOCKINGPANE_ACTION*)lParam;

        switch(pAction->action)

            case xtpPaneActionSplitterResized:

                CXTPDockingPane* pPane = pAction->pPane;

                    unsigned int pane_w = pPane->GetPaneWindowRect().Width();  <--- (a)

                    unsigned int pane_h = pPane->GetPaneWindowRect().Height();

 

I can get the event of internal pane size was changed at point (a).

The issue that I don't know is

   pane_w, pane_h is not updated immediately(i.e. finished dragging of split bar & took off from mouse left click)

   The value of pane_w, pane_h is updated at next time(i.e. when dragged split bar once more)

 

Could anyone that know about this issue help me?

Thanks.