[PATCH 2/3] dwmapi: Use RtlGetVersion() for system version detection instead.

[Jactry Zeng]

> 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 
---
 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;