user32: Add EnableNonClientDpiScaling stub.

dlls/user32/sysparams.c

@@ -3664,6 +3664,16 @@ BOOL WINAPI IsProcessDPIAware(void)
     return GetAwarenessFromDpiAwarenessContext( GetThreadDpiAwarenessContext() ) != DPI_AWARENESS_UNAWARE;
 }
 
+/**********************************************************************
+ *              EnableNonClientDpiScaling   (USER32.@)
+ */
+BOOL WINAPI EnableNonClientDpiScaling( HWND hwnd )
+{
+    FIXME("(%p): stub\n", hwnd);
+    SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
+    return FALSE;
+}
+
 /***********************************************************************
  *              GetDpiForSystem   (USER32.@)
  */

dlls/user32/user32.spec

@@ -205,6 +205,7 @@
 @ stdcall EmptyClipboard()
 @ stdcall EnableMenuItem(long long long)
 @ stdcall EnableMouseInPointer(long)
+@ stdcall EnableNonClientDpiScaling(long)
 @ stdcall EnableScrollBar(long long long)
 @ stdcall EnableWindow(long long)
 @ stdcall EndDeferWindowPos(long)

include/winuser.h

@@ -3702,6 +3702,7 @@ WINUSERAPI INT         WINAPI DrawTextExW(HDC,LPWSTR,INT,LPRECT,UINT,LPDRAWTEXTP
 WINUSERAPI BOOL        WINAPI EmptyClipboard(void);
 WINUSERAPI BOOL        WINAPI EnableMenuItem(HMENU,UINT,UINT);
 WINUSERAPI BOOL        WINAPI EnableMouseInPointer(BOOL);
+WINUSERAPI BOOL        WINAPI EnableNonClientDpiScaling(HWND);
 WINUSERAPI BOOL        WINAPI EnableScrollBar(HWND,UINT,UINT);
 WINUSERAPI BOOL        WINAPI EnableWindow(HWND,BOOL);
 WINUSERAPI BOOL        WINAPI EndDeferWindowPos(HDWP);