windows log 打印语句

1、格式化字符串(Writes formatted data to the specified string)

　　wchar_t szMessage[260];

　　PWSTR pszFunction = L“Hello world ！”；

　　DWORD dwError = GetLastError();

　　StringCchPrintfW(szMessage, ARRAYSIZE(szMessage),L"%s failed w/err 0x%08lx", pszFunction, dwError);

　　StringCchPrintf is a replacement for the following functions:

• sprintf, swprintf, _stprintf
• wsprintf
• wnsprintf
• _snprintf, _snwprintf, _sntprintf

2、ReportEventW ，适用于服务应用，适用于在事件查看器中查看相关log

 #ifdef _DEBUG

 HANDLE hEventSource = NULL;
 LPCWSTR lpszStrings[] = { NULL, NULL };

 hEventSource = RegisterEventSourceW(NULL, L"DeviceMonitorService");
 if (hEventSource)
 {
 lpszStrings[] = L"Source";//来源
 lpszStrings[] = pszMessage;

 ReportEventW(hEventSource, // Event log handle
 wType, // Event type
 , // Event category
 , // Event identifier
 NULL, // No security identifier
 , // Size of lpszStrings array
 , // No binary data
 lpszStrings, // Array of strings
 NULL // No binary data
 );

 DeregisterEventSource(hEventSource);
 }
 #else
 #endif // DEBUG

3、OutputDebugStringA，适用于win32应用程序（非控制台程序）

void logoutput(const char * lpszFormat, ...)
{
    //#ifdef _DEBUG

    va_list argList;
    va_start(argList, lpszFormat);

    char chInput[] = {  };
    vsprintf_s(chInput, lpszFormat, argList);

    va_end(argList);

    OutputDebugStringA(chInput);
    OutputDebugStringA("\n");

    //#endif
}

4、字符串操作（strsafe function）

The string functions give applications the means to copy, compare, sort, format, and convert character strings as well as the means to determine the character type of each character in a string.

使用安全字符：

　　#include Strsafe.h

　　StringCchCopy

CRT String Function	Windows String Function	StrSafe Function
strcat	lstrcat	StringCchCat StringCchCatEx StringCbCat StringCbCatEx
strcmp	lstrcmp	(no equivalent function)
strcpy	lstrcpy	StringCchCopy StringCchCopyEx StringCbCopy StringCbCopyEx
strlen	lstrlen	StringCchLength StringCbLength

来源于http://msdn.microsoft.com/en-us/library/windows/desktop/ms647465(v=vs.85).aspx