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CDocument destructor not called in SDI app

jrohde (107)
Hello,

This problem actually stemmed from a bigger project, but I created a bare-bones MFC project in Visual Studio 2010 to test it, and the issue remains. I have added messages to make sure certain methods are getting called. OnNewDocument() and the constructor get called, but not the destructor. I believe this may be the source of my larger project's memory leak, as a member object is not being properly destroyed.

Below are the header and implementation files for the class, to which I have only added some message boxes, but nothing else. All I do with the test program here is build & run, then immediately click the 'x' button to close it. Any ideas?

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// TestDoc.h : interface of the CTestDoc class
//


#pragma once


class CTestDoc : public CDocument
{
protected: // create from serialization only
	CTestDoc();
	DECLARE_DYNCREATE(CTestDoc)

// Attributes
public:

// Operations
public:

// Overrides
public:
	virtual BOOL OnNewDocument();
	virtual void Serialize(CArchive& ar);
#ifdef SHARED_HANDLERS
	virtual void InitializeSearchContent();
	virtual void OnDrawThumbnail(CDC& dc, LPRECT lprcBounds);
#endif // SHARED_HANDLERS

// Implementation
public:
	virtual ~CTestDoc();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	DECLARE_MESSAGE_MAP()

#ifdef SHARED_HANDLERS
	// Helper function that sets search content for a Search Handler
	void SetSearchContent(const CString& value);
#endif // SHARED_HANDLERS
};



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// TestDoc.cpp : implementation of the CTestDoc class
//

#include "stdafx.h"
// SHARED_HANDLERS can be defined in an ATL project implementing preview, thumbnail
// and search filter handlers and allows sharing of document code with that project.
#ifndef SHARED_HANDLERS
#include "Test.h"
#endif

#include "TestDoc.h"

#include <propkey.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

// CTestDoc

IMPLEMENT_DYNCREATE(CTestDoc, CDocument)

BEGIN_MESSAGE_MAP(CTestDoc, CDocument)
END_MESSAGE_MAP()


// CTestDoc construction/destruction

CTestDoc::CTestDoc()
{
	// TODO: add one-time construction code here
	::MessageBox(NULL,_T("CTestDoc()"),_T(""),0);
}

CTestDoc::~CTestDoc()
{
	::MessageBox(NULL,_T("~CTestDoc()"),_T(""),0);    //Not called
}

BOOL CTestDoc::OnNewDocument()
{
	::MessageBox(NULL,_T("OnNewDocument()"),_T(""),0);

	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}




// CTestDoc serialization

void CTestDoc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

#ifdef SHARED_HANDLERS

// Support for thumbnails
void CTestDoc::OnDrawThumbnail(CDC& dc, LPRECT lprcBounds)
{
	// Modify this code to draw the document's data
	dc.FillSolidRect(lprcBounds, RGB(255, 255, 255));

	CString strText = _T("TODO: implement thumbnail drawing here");
	LOGFONT lf;

	CFont* pDefaultGUIFont = CFont::FromHandle((HFONT) GetStockObject(DEFAULT_GUI_FONT));
	pDefaultGUIFont->GetLogFont(&lf);
	lf.lfHeight = 36;

	CFont fontDraw;
	fontDraw.CreateFontIndirect(&lf);

	CFont* pOldFont = dc.SelectObject(&fontDraw);
	dc.DrawText(strText, lprcBounds, DT_CENTER | DT_WORDBREAK);
	dc.SelectObject(pOldFont);
}

// Support for Search Handlers
void CTestDoc::InitializeSearchContent()
{
	CString strSearchContent;
	// Set search contents from document's data. 
	// The content parts should be separated by ";"

	// For example:  strSearchContent = _T("point;rectangle;circle;ole object;");
	SetSearchContent(strSearchContent);
}

void CTestDoc::SetSearchContent(const CString& value)
{
	if (value.IsEmpty())
	{
		RemoveChunk(PKEY_Search_Contents.fmtid, PKEY_Search_Contents.pid);
	}
	else
	{
		CMFCFilterChunkValueImpl *pChunk = NULL;
		ATLTRY(pChunk = new CMFCFilterChunkValueImpl);
		if (pChunk != NULL)
		{
			pChunk->SetTextValue(PKEY_Search_Contents, value, CHUNK_TEXT);
			SetChunkValue(pChunk);
		}
	}
}

#endif // SHARED_HANDLERS

// CTestDoc diagnostics

#ifdef _DEBUG
void CTestDoc::AssertValid() const
{
	CDocument::AssertValid();
}

void CTestDoc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG


// CTestDoc commands
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