Called by the framework to select or to clear a check box for the specified command and recalculate the layout of a shown pane.
BOOL ProcessPaneContextMenuCommand(
   UINT nID,
   int nCode,
   void* pExtra,
   AFX_CMDHANDLERINFO* pHandlerInfo
);
Parameters
- [in] nID 
 The id of a control bar in the menu.
- [in] nCode 
 The command notification code.
- [in] pExtra 
 A pointer to void that is casted to a pointer to CCmdUI if nCode is CN_UPDATE_COMMAND_UI.
- [in] pHandlerInfo 
 A pointer to an info structure. This parameter is not used.
Return Value
TRUE if pEXtra is not NULL and nCode equals CN_UPDATE_COMMAND_UI, or if there is a control bar with the specified nID.
Requirements
Header: afxdockingmanager.h