Jactry Zeng : dwmapi: Use RtlGetVersion() for system version detection instead.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0260f2dc126c305be3cf9d4214c2d73e1ed46ec3
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=0260f2dc126c305be3cf9d4214c2d73e1ed46ec3

Author: Jactry Zeng <jzeng at codeweavers.com>
Date:   Wed May 11 02:44:20 2022 -0500

dwmapi: Use RtlGetVersion() for system version detection instead.

>From commit 6719bf2e037b, GetVersionExW() only returns the real
emulated system version when supportedOS is specified in the
application's manifest file, so let's use RtlGetVersion() instead.

Signed-off-by: Jactry Zeng <jzeng at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dwmapi/dwmapi_main.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/dlls/dwmapi/dwmapi_main.c b/dlls/dwmapi/dwmapi_main.c
index cec20220ec2..5293a22729b 100644
--- a/dlls/dwmapi/dwmapi_main.c
+++ b/dlls/dwmapi/dwmapi_main.c
@@ -21,6 +21,7 @@
 
 #include <stdarg.h>
 
+#include "winternl.h"
 #define COBJMACROS
 #include "windef.h"
 #include "winbase.h"
@@ -37,18 +38,16 @@ WINE_DEFAULT_DEBUG_CHANNEL(dwmapi);
  */
 HRESULT WINAPI DwmIsCompositionEnabled(BOOL *enabled)
 {
-    OSVERSIONINFOW version;
+    RTL_OSVERSIONINFOEXW version;
 
     TRACE("%p\n", enabled);
 
     if (!enabled)
         return E_INVALIDARG;
 
-    version.dwOSVersionInfoSize = sizeof(OSVERSIONINFOW);
-
-    if (!GetVersionExW(&version))
-        *enabled = FALSE;
-    else
+    *enabled = FALSE;
+    version.dwOSVersionInfoSize = sizeof(version);
+    if (!RtlGetVersion(&version))
         *enabled = (version.dwMajorVersion > 6 || (version.dwMajorVersion == 6 && version.dwMinorVersion >= 3));
 
     return S_OK;