Why is the screen flickering while switching from ribbon view to menu bar view ? what is the solution to get rid of it?

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C++

MFC

Hello Guys,
I am trying to switching the GUI(Ribbon or Menu) according to user's choice but i am having flickering issue while switching. As i am new to MDI application ,i don't known what to do. Please guide me. I am using Visual studio 2015. Sorry, if any mistake is there in my Question.
Thanks in advance,

What I have tried:

BOOL bNameValid;
	CViewSelection obj_ViewSelection;
	obj_ViewSelection.DoModal();
	CMDITabInfo mdiTabParams;
	mdiTabParams.m_style = CMFCTabCtrl::STYLE_3D_ONENOTE; // other styles available...
	mdiTabParams.m_bActiveTabCloseButton = TRUE;      // set to FALSE to place close button at right of tab area
	mdiTabParams.m_bTabIcons = FALSE;    // set to TRUE to enable document icons on MDI taba
	mdiTabParams.m_bAutoColor = TRUE;    // set to FALSE to disable auto-coloring of MDI tabs
	mdiTabParams.m_bDocumentMenu = TRUE; // enable the document menu at the right edge of the tab area
	EnableMDITabbedGroups(TRUE, mdiTabParams);
	if (bSelectedView == 1)
	{
		m_wndRibbonBar.Create(this);
		m_wndRibbonBar.LoadFromResource(IDR_RIBBON);
	}
	else
	{
		m_wndRibbonBar.LoadFromResource(IDR_MAINFRAME);
	}
	if (!m_wndStatusBar.Create(this))
	{
		TRACE0("Failed to create status bar\n");
		return -1;      // fail to create
	}