ViaThinkSoft CodeLib
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CodeLib → Programming aids → C / C++
// #define USE_OLE32
#ifdef USE_OLE32
#pragma comment(linker, "-lOle32")
#define __GUID(x) _StringToGUID(L ## x)
const GUID _StringToGUID(LPCWSTR lpcstrGUID) {
GUID guid;
assert(SUCCEEDED(CLSIDFromString(lpcstrGUID, &guid)));
return guid;
}
#else
#define __GUID(x) _StringToGUID(x)
const bool StringToGUID(const char* szGUID, GUID* g) {
// Check if string is a valid GUID
if (strlen(szGUID) != 38) return false;
for (int i=0; i<strlen(szGUID); ++i) {
char g = szGUID[i];
if (i == 0) {
if (g != '{') return false;
} else if (i == 37) {
if (g != '}') return false;
} else if ((i == 9) || (i == 14) || (i == 19) || (i == 24)) {
if (g != '-') return false;
} else {
if (!((g >= '0') && (g <= '9')) && !((g >= 'A') && (g <= 'F')) && !((g >= 'a') && (g <= 'f'))) {
return false;
}
}
}
char* pEnd;
g->Data1 = strtoul(szGUID+1,&pEnd,16);
g->Data2 = strtoul(szGUID+10,&pEnd,16);
g->Data3 = strtoul(szGUID+15,&pEnd,16);
char b[3]; b[2] = 0;
memcpy(&b[0], szGUID+20, 2*sizeof(b[0])); g->Data4[0] = strtoul(&b[0], &pEnd, 16);
memcpy(&b[0], szGUID+22, 2*sizeof(b[0])); g->Data4[1] = strtoul(&b[0], &pEnd, 16);
for (int i=0; i<6; ++i) {
memcpy(&b[0], szGUID+25+i*2, 2*sizeof(b[0])); g->Data4[2+i] = strtoul(&b[0], &pEnd, 16);
}
return true;
}
const GUID _StringToGUID(const char* szGUID) {
GUID g;
assert(StringToGUID(szGUID, &g));
return g;
}
#endifExample usage:
const GUID UD2_STATUSAUTH_GENERIC = __GUID("{90F53368-1EFB-4350-A6BC-725C69938B9C}");Source: https://www.viathinksoft.de/svn/userdetect2/trunk/UserDetect2/ud2_guid.h
Daniel Marschall
ViaThinkSoft Co-Founder
ViaThinkSoft Co-Founder