Everhart,Glenn
From:	Lee Abrahamson [labraham@sntc.com]
Sent:	Wednesday, April 15, 1998 6:44 PM
To:	Sherri Scharf-ESS013
Cc:	ntdev@atria.com
Subject:	RE: [ntdev] SDI app opening doc on startup
I had the same problem, I looked for some set amount of time throughout
the MFC code for a way to turn this off but did not find any good way.
After stepping through this code I found that an OnFileNew is
auto-generated at the beginning.  I subclassed CDocManager (called it
DocManager) and overrode (is that a word?) the OnFileNew method.
Basically I let the first OnFileNew arrive and ignored it.  I also set a
boolean in my subclass to remember that 1 OnFileNew has arrived and
subsequent OnFileNew's should behave as expected.

Here's the code example:

MYDOCMGR.H
class DocManager : public CDocManager  
{
DECLARE_DYNAMIC(DocManager)

  public:
      DocManager();
	~DocManager();

//	Override.
      void OnFileNew();

private:
BOOL bOFNarrived;

};

MYDOCMGR.CPP
DocManager::DocManager()
{
	bOFNarrived = FALSE;
}

void DocManager::OnFileNew()
{

	// We have subclassed the Document Manager in order to control
	// the way documents are created.  

	if (!bOFNarrived)	// Let the app init OnFileNew be ignored
		bOFNarrived = TRUE;
	else
	{
		if (m_templateList.IsEmpty())
		{
			TRACE0("Error: no document templates registered
with CWinApp.\n");
			AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
			return;
		}

		CDocTemplate* pTemplate;

		pTemplate = (CDocTemplate*)m_templateList.GetHead();

		ASSERT(pTemplate != NULL);
		ASSERT_KINDOF(CDocTemplate, pTemplate);

		pTemplate->OpenDocumentFile(NULL);
	}
}

Look in DOCMGR.CPP in DEVSTUDIO\VC\MFC\SRC for their version of this
method.  I also removed the check for multiple document templates.  I
have a few more things in here that don't apply to your problem so I
left them out of this example.  My app is an MDI app so I give this
solution no absolute guarantees.  I think if you see their OnFileNew
code you will figure out what you have to do.


Lee Abrahamson
Switched Network Technologies
Labraham@sntc.com
	----------
	From:  Sherri Scharf-ESS013
[SMTP:Sherri_Scharf-ESS013@email.mot.com]
	Sent:  Wednesday, April 15, 1998 1:21 PM
	To:  'ntdev@atria.com'
	Subject:  [ntdev] SDI app opening doc on startup

	Hi,

	please forgive a newbie MFC question. I am developing an SDI
	application, and when the application opens, by default it seems
to
	create an empty doc and come up with it open. I do not want that
to
	happen--I want it to come up empty so the user has to explicitly
do
	something to create a doc. 

	We were able to partially solve this by replacing
	if (!ProcessShellCommand(cmdInfo))
			return FALSE;

	in InitInstance with

		if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
			return FALSE;
		m_pMainWnd = pMainFrame;

	but the problem now is that when I open a file, it brings up a
whole new
	main frame instead of opening it within the same window.

	Is what I am trying to do even possible? Any suggestions would
be
	greatly appreciated!

	Thanks,
	Sherri


	Sherri Scharf
	Software Engineer
	Motorola, Land Mobile Products Sector

	 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	[ To unsubscribe, send email to ntdev-request@atria.com with
body
	UNSUBSCRIBE (the subject is ignored). ]
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[ To unsubscribe, send email to ntdev-request@atria.com with body
UNSUBSCRIBE (the subject is ignored). ]