Improved Tip-of-the-Day Dialog

// MainFrm.cpp : implementation of the CMainFrame class
//

#include "stdafx.h"
#include "TipDemo.h"

#include "MainFrm.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMainFrame

IMPLEMENT_DYNCREATE(CMainFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
	ON_WM_INITMENU()
	//{{AFX_MSG_MAP(CMainFrame)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code !
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMainFrame construction/destruction

CMainFrame::CMainFrame()
{
	// TODO: add member initialization code here
	
}

CMainFrame::~CMainFrame()
{
}

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CFrameWnd::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMainFrame diagnostics

#ifdef _DEBUG
void CMainFrame::AssertValid() const
{
	CFrameWnd::AssertValid();
}

void CMainFrame::Dump(CDumpContext& dc) const
{
	CFrameWnd::Dump(dc);
}

#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMainFrame message handlers

void CMainFrame::OnInitMenu(CMenu* pMenu)
{
   CFrameWnd::OnInitMenu(pMenu);
  
	// CG: This block added by 'Tip of the Day' component.
	{
		// TODO: This code adds the "Tip of the Day" menu item
		// on the fly.  It may be removed after adding the menu
		// item to all applicable menu items using the resource
		// editor.

		// Add Tip of the Day menu item on the fly!
		static CMenu* pSubMenu = NULL;

		CString strHelp; strHelp.LoadString(CG_IDS_TIPOFTHEDAYHELP);
		CString strMenu;
		int nMenuCount = pMenu->GetMenuItemCount();
		BOOL bFound = FALSE;
		for (int i=0; i < nMenuCount; i++) 
		{
			pMenu->GetMenuString(i, strMenu, MF_BYPOSITION);
			if (strMenu == strHelp)
			{ 
				pSubMenu = pMenu->GetSubMenu(i);
				bFound = TRUE;
				ASSERT(pSubMenu != NULL);
			}
		}

		CString strTipMenu;
		strTipMenu.LoadString(CG_IDS_TIPOFTHEDAYMENU);
		if (!bFound)
		{
			// Help menu is not available. Please add it!
			if (pSubMenu == NULL) 
			{
				// The same pop-up menu is shared between mainfrm and frame 
				// with the doc.
				static CMenu popUpMenu;
				pSubMenu = &popUpMenu;
				pSubMenu->CreatePopupMenu();
				pSubMenu->InsertMenu(0, MF_STRING|MF_BYPOSITION, 
					CG_IDS_TIPOFTHEDAY, strTipMenu);
			} 
			pMenu->AppendMenu(MF_STRING|MF_BYPOSITION|MF_ENABLED|MF_POPUP, 
				(UINT)pSubMenu->m_hMenu, strHelp);
			DrawMenuBar();
		} 
		else
		{      
			// Check to see if the Tip of the Day menu has already been added.
			pSubMenu->GetMenuString(0, strMenu, MF_BYPOSITION);

			if (strMenu != strTipMenu) 
			{
				// Tip of the Day submenu has not been added to the 
				// first position, so add it.
				pSubMenu->InsertMenu(0, MF_BYPOSITION);  // Separator
				pSubMenu->InsertMenu(0, MF_STRING|MF_BYPOSITION, 
					CG_IDS_TIPOFTHEDAY, strTipMenu);
			}
		}
	}

}