mymfcdll.cpp

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// Mymfcdll.cpp : Defines the initialization routines for the DLL.
//

#include "stdafx.h"
#include "Mymfcdll.h"

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

//
//	Note!
//
//		If this DLL is dynamically linked against the MFC
//		DLLs, any functions exported from this DLL which
//		call into MFC must have the AFX_MANAGE_STATE macro
//		added at the very beginning of the function.
//
//		For example:
//
//		extern "C" BOOL PASCAL EXPORT ExportedFunction()
//		{
//			AFX_MANAGE_STATE(AfxGetStaticModuleState());
//			// normal function body here
//		}
//
//		It is very important that this macro appear in each
//		function, prior to any calls into MFC.  This means that
//		it must appear as the first statement within the 
//		function, even before any object variable declarations
//		as their constructors may generate calls into the MFC
//		DLL.
//
//		Please see MFC Technical Notes 33 and 58 for additional
//		details.
//

/////////////////////////////////////////////////////////////////////////////
// CMymfcdllApp

BEGIN_MESSAGE_MAP(CMymfcdllApp, CWinApp)
	//{{AFX_MSG_MAP(CMymfcdllApp)
		// 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
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMymfcdllApp construction

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

/////////////////////////////////////////////////////////////////////////////
// The one and only CMymfcdllApp object

CMymfcdllApp theApp;

_declspec(dllexport) char* WINAPI GetDateAndTime()
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());  //最前面位置
	char *szDateTime;
	struct tm *newtime;  // tm是结构类型，存储时间信息
	time_t  long_time;  // time_t是长整形，用于表示时间值
	time(&long_time);  // 获得时间值，用长整形表示 
	newtime=localtime(&long_time); // 转换成当地时间
	szDateTime=asctime(newtime);  // 转换成字符串，作为返回值
	return szDateTime;
}