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Generating a UUID Programmatically

Listing 1 shows you how to generate a UUID programmatically using CFUUID functions. Plug-ins use UUIDs to uniquely identify types, interfaces, and factories.

Listing 1 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);

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