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

From commit 6719bf2e, 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@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dwmapi: Use RtlGetVersion() for system version detection instead.
0260f2dc · Jactry Zeng · Alexandre Julliard · 2a44723d · 0260f2dc
Commit 0260f2dc authored May 11, 2022 by Jactry Zeng Committed by Alexandre Julliard May 17, 2022
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dwmapi_main.c dlls/dwmapi/dwmapi_main.c +5 -6

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--- 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;