GetCurrentDirectory()를 이용한 Windows에서 현재경로 받아오기..

Windows에서 현재 실행되는 프로그램의 현재 작업 디렉토리를 알아오기 위해 "GetCurrentDirectory()"를 사용한다.

첫번 째 인자로 경로를 표시할 문자열의 길이를 넣어주고, 두번 째 인자로 실제 받아온 경로를 보여준다.

간단히 예를 들면...

char Path[255];

GetCurrentDirectory(255, Path);
printf("Current Path is %s\n", Path);

이렇게 하면 콘솔창에서 현재 위의 프로그램의 경로를 확인할 수 있다.

MSDN을 검색하니 다음과 같이 되어있다.

GetCurrentDirectory Function

Retrieves the current directory for the current process.

Syntax

DWORD WINAPI GetCurrentDirectory(
  __in   DWORD nBufferLength,
  __out  LPTSTR lpBuffer
);

Parameters

nBufferLength [in]

The length of the buffer for the current directory string, in TCHARs. The buffer length must include room for a terminating null character.

lpBuffer [out]

A pointer to the buffer that receives the current directory string. This null-terminated string specifies the absolute path to the current directory.

To determine the required buffer size, set this parameter to NULL and the nBufferLength parameter to 0.

Return Value

If the function succeeds, the return value specifies the number of characters that are written to the buffer, not including the terminating null character.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

If the buffer that is pointed to by lpBuffer is not large enough, the return value specifies the required size of the buffer, in characters, including the null-terminating character.

Remarks

Each process has a single current directory that consists of two parts:

• A disk designator that is either a drive letter followed by a colon, or a server name followed by a share name (\\servername\sharename)
• A directory on the disk designator

To set the current directory, use the SetCurrentDirectory function.

In certain rare cases, if the specified directory is on the current drive, the function might omit the drive letter and colon from the path. Therefore, the size that is returned by the function might be two characters less than the size of the specified string, not including the terminating null character. This behavior might occur in edge situations such as in a services application. If you need the drive letter, make a subsequent call to GetFullPathName to retrieve the drive letter.

Examples

For an example, see Changing the Current Directory.

Requirements

Client	Requires Windows Vista, Windows XP, or Windows 2000 Professional.
Server	Requires Windows Server 2008, Windows Server 2003, or Windows 2000 Server.
Header	Declared in WinBase.h; include Windows.h.
Library	Use Kernel32.lib.
DLL	Requires Kernel32.dll.
Unicode/ANSI	Implemented as GetCurrentDirectoryW (Unicode) and GetCurrentDirectoryA (ANSI).