Opening / Saving multiple types of documents in MFC MDI applications

// MyFirstProject.cpp : Defines the class behaviors for the application.
//

/*

	author:			Babak Taati ( http://qlink.queensu.ca/~3bt1/ )
	Download link:	http://qlink.queensu.ca/~3bt1/Miscellaneous/Downloads.htm	

	Description:	This is a simple project that allows opening / saving multiple types of documents
  
	References: 	1. MFC Document/View documentation and enhancements, by Roger Allen on CodeProject.com
					2. How to support two file extensions per MFC document type, Micorosft support document Article ID 141921
					3. DocMgrEx.exe Assoc Multiple File Extension w/2 Doc Tyle, Micorosft support document Article ID 198538
					4. Selecting multiple files in File Open dialog, by Kaus Gutter on CodeGuru.com
					5. Opening multiple documents of several types at once, by Ernesto Perales Soto on CodeProject.com

	Date:			Nov 2004

*/

#include "stdafx.h"
#include "MyFirstProject.h"

#include "MainFrm.h"
#include "ChildFrm.h"
#include "MyFirstProjectDoc.h"
#include "MyFirstProjectView.h"

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

#include "MultDocManager.h" //Babak

/////////////////////////////////////////////////////////////////////////////
// CMyFirstProjectApp

BEGIN_MESSAGE_MAP(CMyFirstProjectApp, CWinApp)
	//{{AFX_MSG_MAP(CMyFirstProjectApp)
	ON_COMMAND(ID_APP_ABOUT, OnAppAbout)
		// 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
	// Standard file based document commands
	ON_COMMAND(ID_FILE_NEW, CWinApp::OnFileNew)
	ON_COMMAND(ID_FILE_OPEN, CWinApp::OnFileOpen)
	// Standard print setup command
	ON_COMMAND(ID_FILE_PRINT_SETUP, CWinApp::OnFilePrintSetup)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyFirstProjectApp construction

CMyFirstProjectApp::CMyFirstProjectApp()
{
	// TODO: add construction code here,
	// Place all significant initialization in InitInstance
}

/////////////////////////////////////////////////////////////////////////////
// The one and only CMyFirstProjectApp object

CMyFirstProjectApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CMyFirstProjectApp initialization

BOOL CMyFirstProjectApp::InitInstance()
{
	// Standard initialization
	// If you are not using these features and wish to reduce the size
	//  of your final executable, you should remove from the following
	//  the specific initialization routines you do not need.

#ifdef _AFXDLL
	Enable3dControls();			// Call this when using MFC in a shared DLL
#else
	Enable3dControlsStatic();	// Call this when linking to MFC statically
#endif

	// Change the registry key under which our settings are stored.
	// TODO: You should modify this string to be something appropriate
	// such as the name of your company or organization.
	SetRegistryKey(_T("Local AppWizard-Generated Applications"));

	LoadStdProfileSettings();  // Load standard INI file options (including MRU)

	// Register the application's document templates.  Document templates
	//  serve as the connection between documents, frame windows and views.


	m_pDocManager = new CMultDocManager;  //Babak 

	CMultiDocTemplate* pDocTemplate;
	pDocTemplate = new CMultiDocTemplate(
		IDR_FIRSTTYPE,
		RUNTIME_CLASS(CMyFirstProjectDoc),
		RUNTIME_CLASS(CChildFrame), // custom MDI child frame
		RUNTIME_CLASS(CMyFirstProjectView));
	AddDocTemplate(pDocTemplate);

	//Babak
	pDocTemplate = new CMultiDocTemplate(
		IDR_FIRST2TYPE,
		RUNTIME_CLASS(CMyFirstProjectDoc),
		RUNTIME_CLASS(CChildFrame), // custom MDI child frame
		RUNTIME_CLASS(CMyFirstProjectView));
	AddDocTemplate(pDocTemplate);

	//Babak
	pDocTemplate = new CMultiDocTemplate(
		IDR_FIRST3TYPE,
		RUNTIME_CLASS(CMyFirstProjectDoc),
		RUNTIME_CLASS(CChildFrame), // custom MDI child frame
		RUNTIME_CLASS(CMyFirstProjectView));
	AddDocTemplate(pDocTemplate);


	// create main MDI Frame window
	CMainFrame* pMainFrame = new CMainFrame;
	if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
		return FALSE;
	m_pMainWnd = pMainFrame;

	// Enable drag/drop open
	m_pMainWnd->DragAcceptFiles();

	// Enable DDE Execute open
	EnableShellOpen();
	RegisterShellFileTypes(TRUE);

	// Parse command line for standard shell commands, DDE, file open
	CCommandLineInfo cmdInfo;
	ParseCommandLine(cmdInfo);

	// Dispatch commands specified on the command line
	if (!ProcessShellCommand(cmdInfo))
		return FALSE;

	// The main window has been initialized, so show and update it.
	pMainFrame->ShowWindow(m_nCmdShow);
	pMainFrame->UpdateWindow();

	return TRUE;
}


/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
		// No message handlers
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

// App command to run the dialog
void CMyFirstProjectApp::OnAppAbout()
{
	CAboutDlg aboutDlg;
	aboutDlg.DoModal();
}

/////////////////////////////////////////////////////////////////////////////
// CMyFirstProjectApp message handlers