Generating a UUID Programmatically

CFUUIDRef     myUUID;

CFStringRef   myUUIDString;

char          strBuffer[100];

myUUID = CFUUIDCreate(kCFAllocatorDefault);

myUUIDString = CFUUIDCreateString(kCFAllocatorDefault, myUUID);

// This is the safest way to obtain a C string from a CFString.

CFStringGetCString(myUUIDString, strBuffer, 100, kCFStringEncodingASCII);

CFStringRef outputString =

    CFStringCreateWithFormat(kCFAllocatorDefault,

                             NULL,

                             CFSTR("My UUID is: %s!\n"),

                             strBuffer);

CFShow(outputString);