获取Windows ID c ++

Question

I would like read the Windows ID in my program. So I use RegGetValue in

TCHAR value[255];
DWORD BufferSize = 255;
int a=RegGetValue(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", "ProductId", RRF_RT_ANY, NULL, (PVOID)&value, &BufferSize);

My problem is that in 64 bits OS the function read the folder "SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion" and not "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion"

Unfortunetaly ProductID and DigialProductID is not in the 64 register.. How I could force the read or obtains the Window ID

Best Regards

Answer 1

HKEY key = NULL;
RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", 0, KEY_QUERY_VALUE | KEY_WOW64_32KEY, &key);
int a = RegGetValue(key, "", "ProductId", RRF_RT_ANY, NULL, (PVOID)&value, &BufferSize);