获取Windows的版本
void CtestThreadDlg::OnBnClickedButton3(){
HKEY hKey;
DWORD dwType = REG_SZ;
DWORD dwSize = 255;//须指定长度,否则第一次读取RegQueryValueEx不成功，仅返回长度
WCHAR data;
bool ret;
if (RegOpenKey(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Microsoft\\Windows NT\\
CurrentVersion"), &hKey) == ERROR_SUCCESS)
{
TRACE(_T("未找到此键"));
return;
}
ret = RegQueryValueEx(hKey, _T("ProductName"),
NULL,
& dwType,
(LPBYTE)data,
& dwSize) == ERROR_SUCCESS;
RegCloseKey(hKey);
ret = wcscmp(data, _T("Windows 10 Pro")) == 0;
CString str;
str.Format(_T("%d"), ret);
TRACE(str);
}
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