C / C++ / MFC

S-IP    192.168.0.1    = 11000000.10101000.00000000.00000001<br />
D-IP1   192.168.0.2    = 11000000.10101000.00000000.00000010<br />
D-IP2   192.168.10.3   = 11000000.10101000.00001010.00000011<br />
Mask    255.255.255.0  = 11111111.11111111.11111111.00000000

S-IP  AND Mask = 11000000.10101000.00000000.00000000<br />
D-IP1 AND Mask = 11000000.10101000.00000000.00000000<br />
S-IP  AND Mask  = D-IP1 AND Mask

S-IP  AND Mask = 11000000.10101000.00000000.00000000<br />
D-IP1 AND Mask = 11000000.10101000.00001010.00000000<br />
S-IP  AND Mask <> D-IP2 AND Mask

bool rmw::fileExists(const wString & fileName) {
   WIN32_FIND_DATA d;
   HANDLE file = FindFirstFile(fileName.c_str(), &d);
   bool retVal(true);
   if (file == INVALID_HANDLE_VALUE) retVal = false;
   FindClose(file);
   return retVal;
   }


wString rmw::getPathFromStr(const wString & str) {
   int pos = str.find_last_of(TEXT("\\"));
   return wString(str.substr(0, pos));
   }


wString rmw::extractFileName(const wString & str) {
   int pos = str.find_last_of(TEXT("\\"));
   return wString(str.substr(pos+1, str.length()));
   }


wString rmw::extractFileExt(const wString & str) {
   int pos = str.find_last_of(TEXT("."));
   if (pos == -1) return "";
   return wString(str.substr(pos, str.length()));
   }


wString rmw::trimFileExt(const wString & fileName) {
   wString fileExt = rmw::extractFileExt(fileName);
   int len = fileExt.length();
   return fileName.substr(0, fileName.length()-len);
   }


wString rmw::extractFileDir(const wString & fileName) {
   int pos(fileName.find_last_of(TEXT("\\")));
   wString t = fileName.substr(0, fileName.length()-pos);
   return t;
   }

char path[_MAX_PATH];
char filename[_MAX_FNAME + _MAX_EXT];
char drive[_MAX_DRIVE];
char dir[_MAX_DIR];
char fname[_MAX_FNAME];
char ext[_MAX_EXT];
_splitpath(path,drive,dir,fname,ext);
_makepath(filename,"","",fname,ext);