程序代码：

#include <objbase.h>
#include <stdio.h>
#pragma comment(lib,"ole32.lib")

//需要链接ole32.lib  需要引用objbase.h
const char* newGUID()
{
    static char buf[64] = {0};
    GUID guid;
    if (S_OK ==CoCreateGuid(&guid))
    {
        _snprintf(buf, sizeof(buf)
            , "{%08X-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X}"
            , guid.Data1, guid.Data2, guid.Data3, guid.Data4[0]
            , guid.Data4[1] , guid.Data4[2], guid.Data4[3], guid.Data4[4]
            , guid.Data4[5]    , guid.Data4[6], guid.Data4[7] );
    }
    return (const char*)buf;
}
int main(int argc, char* argv[])
{

    CoInitialize(NULL);
    printf(newGUID());
    printf("\n");
    CoUninitialize();
    return 0;
}
/*
   输出样例：

 
   {C71C1680-91B8-47cc-8A10-E69577A18F1A}
*/