Not sure what you mean by "free" and "static". But here is what I could find.
CoCreateGuid wrote:
The CoCreateGuid function calls the RPC function UuidCreate, which creates a GUID, a globally unique 128-bit integer. Use the CoCreateGuid function when you need an absolutely unique number that you will use as a persistent identifier in a distributed environment.To a very high degree of certainty, this function returns a unique value – no other invocation, on the same or any other system (networked or not), should return the same value.
Code:
VarSetCapacity(Guid, 16, 0) ; GUID structure itself.
VarSetCapacity(szGuid, 39, 0) ; Its string representation.
DllCall("ole32\CoCreateGuid", "uint", &Guid)
DllCall("ole32\StringFromCLSID", "uint", &Guid, "uint *", pOleStr)
DllCall("WideCharToMultiByte", "uint", 0, "int", 0, "uint", pOleStr
, "int", -1, "str", szGuid, "uint", 39
, "int", 0, "int", 0)
DllCall("ole32\CoTaskMemFree", "uint", pOleStr)
MsgBox, %szGuid%
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