When the user resizes the frame window, i am trying to have only have particular pane(s) resize (e.g. all middle column panes)  -  not all panes resize gradually as is the default behavior. 

 

Sort of a "preferred pane size".

 

In general, all panes have their own custom min/max sizes, so they are not restricted from being manually resized via their splitter directly, so i cant simply set their size as fixed.

 

I tried freezing some panes size on main fame RecalcLayout before the size notify goes into the docking manager, then unfreezing them after, but this does not work (bad things happen in the thread when panemanager->RecalcFrameLayout(pane) is called).

 

CRect r = pane->GetPaneWindowRect(); sz.SetSize(r.Width(), r.Height()); pane->SetMinTrackSize(sz); pane->SetMaxTrackSize(sz); m_paneManager.RecalcFrameLayout(pane);