"XTPWM_DOCKINGPANE_NOTIFY" message never comes

 

I add the following code into the "OnCreate" function of the window:

  m_paneManager.InstallDockingPanes(this);
  m_paneManager.SetTheme(xtpPaneThemeOffice2003);
  m_paneManager.SetDefaultPaneOptions(xtpPaneNoCloseable|xtpPaneNoDockable|xtpPaneNoFloatable);
  m_paneManager.CreatePane(ID_DOCK, CRect(0,0,0,0), xtpPaneDockTop);

 

And I add ON_MESSAGE(XTPWM_DOCKINGPANE_NOTIFY, OnDockingPaneNotify) in the message map definition. In the OnDockingPaneNotify function, I handle the case "wParam == XTP_DPN_SHOWWINDOW" just like the example code.

 

When I run my app, the docking pane doesn't been created correctly. I debug the program and find that the function OnDockingPaneNotify doesn't been called. It seems that the "XTPWM_DOCKINGPANE_NOTIFY" message with the wParam "XTP_DPN_SHOWWINDOW" doesn't  been sent to my window. Then, I change my code above in the "OnCreate" function to:

  m_paneManager.InstallDockingPanes(this);
  m_paneManager.SetTheme(xtpPaneThemeOffice2003);
  m_paneManager.SetDefaultPaneOptions(xtpPaneNoCloseable|xtpPaneNoDockable|xtpPaneNoFloatable);

  CXTPDockingPane * pPane = m_paneManager.CreatePane(ID_DOCK, CRect(0,0,0,0), xtpPaneDockTop);
  this->SendMessage(XTPWM_DOCKINGPANE_NOTIFY, (WPARAM)XTP_DPN_SHOWWINDOW, (LPARAM)pPane);

 

This time everything is OK. The pane can be created properly, but I wonder why this could be happen. In the example code, it is no need to send the XTPWM_DOCKINGPANE_NOTIFY message.

 

My env is

 

Product: Xtreme ToolkitPro v12.0.2
Platform: Windows 7 (32bit)
Language: Visual C++ 9.0 (VS 2008)

 

 

Thanks.