MFC工具开发实际应用实例

理解MFC程序的初始化：

 

一个实际应用实例：
 

// EcrSimulator.h : main header file for the PROJECT_NAME application
//

#pragma once

#ifndef __AFXWIN_H__
	#error "include 'stdafx.h' before including this file for PCH"
#endif

#include "resource.h"		// main symbols


// CEcrSimulatorApp:
// See EcrSimulator.cpp for the implementation of this class
//

class CEcrSimulatorApp : public CWinApp
{
public:
	CEcrSimulatorApp();

// Overrides
public:
	virtual BOOL InitInstance();

// Implementation

	DECLARE_MESSAGE_MAP()
};

extern CEcrSimulatorApp theApp;

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

#include "stdafx.h"
#include "EcrSimulator.h"
#include "EcrSimulatorDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CEcrSimulatorApp

BEGIN_MESSAGE_MAP(CEcrSimulatorApp, CWinApp)
	ON_COMMAND(ID_HELP, &CWinApp::OnHelp)
END_MESSAGE_MAP()


// CEcrSimulatorApp construction

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


// The one and only CEcrSimulatorApp object

CEcrSimulatorApp theApp;


// CEcrSimulatorApp initialization

BOOL CEcrSimulatorApp::InitInstance()
{
	CWinApp::InitInstance();

	if (!AfxSocketInit())
	{
		AfxMessageBox(IDP_SOCKETS_INIT_FAILED);
		return FALSE;
	}


	// Create the shell manager, in case the dialog contains
	// any shell tree view or shell list view controls.
	CShellManager *pShellManager = new CShellManager;

	// Activate "Windows Native" visual manager for enabling themes in MFC controls
	CMFCVisualManager::SetDefaultManager(RUNTIME_CLASS(CMFCVisualManagerWindows));

	// 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
	// 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"));

	CEcrSimulatorDlg dlg;
	m_pMainWnd = &dlg; //m_pMainWnd 为应用对象 theApp 的数据成员
	INT_PTR nResponse = dlg.DoModal();//显示有模式对话框，等到对话框销毁后才会返回
	if (nResponse == IDOK)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if (nResponse == IDCANCEL)
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}
	else if (nResponse == -1)
	{
		TRACE(traceAppMsg, 0, "Warning: dialog creation failed, so application is terminating unexpectedly.\n");
		TRACE(traceAppMsg, 0, "Warning: if you are using MFC controls on the dialog, you cannot #define _AFX_NO_MFC_CONTROLS_IN_DIALOGS.\n");
	}

	// Delete the shell manager created above.
	if (pShellManager != NULL)
	{
		delete pShellManager;
	}

	// Since the dialog has been closed, return FALSE so that we exit the
	//  application, rather than start the application's message pump.
	return FALSE;
}