这段代码是一个 MFC 应用程序的主体代码,它定义了应用程序类 'CGetInfoApp' 的成员函数和全局对象 'theApp',以及应用程序的初始化和消息循环处理。这个应用程序是一个窗口界面程序,它创建了一个对话框类 'CGetInfoDlg' 的对象 'dlg',将其作为主窗口并显示出来。

在 'InitInstance' 函数中,先调用 'AfxSocketInit' 函数初始化 Socket 库,然后调用 'AfxEnableControlContainer' 函数启用 ActiveX 控件容器,再调用 'Enable3dControls' 或 'Enable3dControlsStatic' 函数启用 3D 控件。最后创建 'CGetInfoDlg' 对象 'dlg' 并显示出来,等待用户的操作,直到对话框被关闭,返回 FALSE 退出应用程序。

接下来可以根据需要在 'CGetInfoApp' 类中添加成员函数或变量,或者在 'CGetInfoDlg' 类中添加响应函数来实现具体功能。

代码示例:

// CGetInfoApp

BEGIN_MESSAGE_MAP(CGetInfoApp, CWinApp)
	//{{AFX_MSG_MAP(CGetInfoApp)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG
	ON_COMMAND(ID_HELP, CWinApp::OnHelp)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGetInfoApp construction

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

/////////////////////////////////////////////////////////////////////////////
// The one and only CGetInfoApp object

CGetInfoApp theApp;

/////////////////////////////////////////////////////////////////////////////
// CGetInfoApp initialization

BOOL CGetInfoApp::InitInstance()
{
	if (!AfxSocketInit())
	{
		AfxMessageBox(IDP_SOCKETS_INIT_FAILED);
		return FALSE;
	}

	AfxEnableControlContainer();

	// 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

	CGetInfoDlg dlg;
	m_pMainWnd = &dlg;
	int nResponse = dlg.DoModal();
	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
	}

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

更多信息:

  • MFC 应用程序框架:https://docs.microsoft.com/en-us/cpp/mfc/visual-c-mfc-fundamentals?view=msvc-170
  • 对话框类:https://docs.microsoft.com/en-us/cpp/mfc/dialog-boxes?view=msvc-170
  • Socket 编程:https://docs.microsoft.com/en-us/cpp/windows/winsock-programming?view=msvc-170
MFC 应用程序代码分析: CGetInfoApp 类

原文地址: https://www.cveoy.top/t/topic/obD5 著作权归作者所有。请勿转载和采集!

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