C++生成GUID

 1 #include <objbase.h>
 2 #include <stdio.h>
 3 
 4 //--生成GUID
 5 const char* newGUID()
 6 {
 7     static char buf[64] = {0};
 8     GUID guid;
 9     if (S_OK == ::CoCreateGuid(&guid))
10     {
11         _snprintf(buf, sizeof(buf)
12             , "%08X-%04X-%04x-%02X%02X-%02X%02X%02X%02X%02X%02X"
13             , guid.Data1
14             , guid.Data2
15             , guid.Data3
16             , guid.Data4[0], guid.Data4[1]
17         , guid.Data4[2], guid.Data4[3], guid.Data4[4], guid.Data4[5]
18         , guid.Data4[6], guid.Data4[7]
19         );
20     }
21     return (const char*)buf;
22 }
23 
24 int main(int argc, char* argv[])
25 {
26     //--COM
27     CoInitialize(NULL);
28 
29     printf(newGUID());
30     printf("\r\n");
31 
32     //--COM
33     CoUninitialize();
34 
35     return 0;
36 }