得到當前應用程序的文件路徑的幾種方法

方法一：__targv

控制檯程序：

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
    CString strPath = argv[0];
}

控制檯程序和window程序通用(推薦使用)：

CString str(__targv[0]);

注意: 該方法獲得路徑多是相對路徑,須要轉換後得到絕對路徑

方法二：_tpgmptr

CString strPath(_tpgmptr);

該方法，編譯時會出現警告：

warning C4996: '_wpgmptr': This function or variable may be unsafe. Consider using _get_wpgmptr instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

能夠經過在工程中添加預約義宏 _CRT_SECURE_NO_WARNINGS 方式去除警告，建議寫成以下形式：

TCHAR* szPath = NULL;
#ifdef UNICODE
_get_wpgmptr(&szPath);
#else
_get_pgmptr(&szPath);
#endif
CString strPath(szPath);

方法三：GetModuleFileName

CString strPath;
DWORD nSize = GetModuleFileName( NULL,strPath.GetBuffer(MAX_PATH),MAX_PATH);
strPath.ReleaseBuffer();

其它得到系統經常使用路徑的方法：

1.得到當前路徑

DWORD dwSize = GetCurrentDirectory(0,NULL);
CString strPath;
GetCurrentDirectory(dwSize,strPath.GetBuffer(dwSize));
strPath.ReleaseBuffer();

2.得到臨時文件夾路徑

DWORD dwSize = GetTempPath(0,NULL);
CString strPath;
dwSize = GetTempPath(dwSize,strPath.GetBuffer(dwSize));
strPath.ReleaseBuffer();

3.得到WINDOWS和system32路徑

DWORD dwSize;
CString strPath;

dwSize = GetWindowsDirectory(NULL,0);
dwSize = GetWindowsDirectory(strPath.GetBuffer(dwSize),dwSize);
strPath.ReleaseBuffer();

dwSize = GetSystemDirectory(NULL,0);
dwSize = GetSystemDirectory(strPath.GetBuffer(dwSize),dwSize);
strPath.ReleaseBuffer();

4.推薦使用Shell庫中函數

TCHAR szPath[MAX_PATH];
int CSIDL[] = 
{
	CSIDL_WINDOWS,		//WINDOWS目錄
	CSIDL_FONTS,		//字體目錄
	CSIDL_SYSTEM,		//SYSTEM32目錄
	CSIDL_SYSTEMX86,
		
	CSIDL_PROGRAM_FILES,//Program Files目錄
	CSIDL_PROGRAM_FILESX86,
	CSIDL_PROGRAM_FILES_COMMON,

	CSIDL_PROFILE,
	CSIDL_COMMON_FAVORITES,
	CSIDL_FAVORITES,	//用戶收藏夾
	CSIDL_DESKTOP,		//用戶桌面目錄
	CSIDL_MYDOCUMENTS,	//個人文檔目錄 = CSIDL_PERSONAL
	CSIDL_MYPICTURES,
	CSIDL_MYMUSIC,
	CSIDL_MYVIDEO,

	CSIDL_APPDATA,		//用戶AppData\Roaming
	CSIDL_COOKIES,
	CSIDL_TEMPLATES,
	CSIDL_RECENT,
	CSIDL_SENDTO,

	CSIDL_STARTMENU,
	CSIDL_PROGRAMS,
	CSIDL_ADMINTOOLS,
	CSIDL_STARTUP,

	CSIDL_LOCAL_APPDATA,
	CSIDL_INTERNET_CACHE,
	CSIDL_HISTORY,
	CSIDL_CDBURN_AREA,

	CSIDL_COMMON_DESKTOPDIRECTORY,
	CSIDL_COMMON_DOCUMENTS,
	CSIDL_COMMON_PICTURES,
	CSIDL_COMMON_MUSIC,
	CSIDL_COMMON_VIDEO,


	CSIDL_COMMON_APPDATA,
	CSIDL_COMMON_STARTMENU,
	CSIDL_COMMON_PROGRAMS,
	CSIDL_COMMON_ADMINTOOLS,
	CSIDL_COMMON_STARTUP,
	CSIDL_COMMON_TEMPLATES,
};
for (int i=0 ; i < _countof(CSIDL); i++) 
{
	if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL[i], NULL, SHGFP_TYPE_CURRENT, szPath))) 
		_tprintf(_T("%d, %s\n"), i, szPath);
	if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL[i], NULL, SHGFP_TYPE_DEFAULT, szPath))) 
		_tprintf(_T("%d, %s\n"), i, szPath);
}