1 /*
2  * Copyright 2019-2019 Blender Foundation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifdef _WIN32
18 #  include <windows.h>
19 #endif
20 
21 #include "util_windows.h"
22 
23 CCL_NAMESPACE_BEGIN
24 
system_windows_version_at_least(int major,int build)25 bool system_windows_version_at_least(int major, int build)
26 {
27 #ifdef _WIN32
28   HMODULE hMod = ::GetModuleHandleW(L"ntdll.dll");
29   if (hMod == 0) {
30     return false;
31   }
32 
33   typedef NTSTATUS(WINAPI * RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);
34   RtlGetVersionPtr rtl_get_version = (RtlGetVersionPtr)::GetProcAddress(hMod, "RtlGetVersion");
35   if (rtl_get_version == NULL) {
36     return false;
37   }
38 
39   RTL_OSVERSIONINFOW rovi = {0};
40   rovi.dwOSVersionInfoSize = sizeof(rovi);
41   if (rtl_get_version(&rovi) != 0) {
42     return false;
43   }
44 
45   return (rovi.dwMajorVersion > major ||
46           (rovi.dwMajorVersion == major && rovi.dwBuildNumber >= build));
47 #else
48   (void)major;
49   (void)build;
50   return false;
51 #endif
52 }
53 
54 CCL_NAMESPACE_END
55