include: Add dxcore.h file.

include/Makefile.in

@@ -282,6 +282,7 @@ SOURCES = \
 	dwrite_1.idl \
 	dwrite_2.idl \
 	dwrite_3.idl \
+	dxcore.h \
 	dxcore_interface.h \
 	dxdiag.h \
 	dxerr8.h \

include/dxcore.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2023 Mohamad Al-Jaf
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "dxcore_interface.h"
+
+STDAPI DXCoreCreateAdapterFactory(REFIID,void **);
+
+#ifdef __cplusplus
+template <class T>
+HRESULT DXCoreCreateAdapterFactory(T **ppv)
+{
+    return DXCoreCreateAdapterFactory(IID_PPV_ARGS(ppv));
+}
+#endif