Some important stuff from the DirectDraw DDK headers.
diff --git a/include/dciddi.h b/include/dciddi.h
new file mode 100644
index 0000000..8c430f5
--- /dev/null
+++ b/include/dciddi.h
@@ -0,0 +1,41 @@
+/* DCI driver interface */
+
+#ifndef __WINE_DCIDDI_H
+#define __WINE_DCIDDI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* DCI Command Escape */
+#define DCICOMMAND 3075
+#define DCI_VERSION 0x0100
+
+#define DCICREATEPRIMARYSURFACE 1
+#define DCICREATEOFFSCREENSURFACE 2
+#define DCICREATEOVERLAYSURFACE 3
+#define DCIENUMSURFACE 4
+#define DCIESCAPE 5
+
+/* DCI Errors */
+#define DCI_OK 0
+
+
+typedef int DCIRVAL; /* DCI callback return type */
+
+/*****************************************************************************
+ * Escape command structures
+ */
+typedef struct _DCICMD {
+ DWORD dwCommand;
+ DWORD dwParam1;
+ DWORD dwParam2;
+ DWORD dwVersion;
+ DWORD dwReserved;
+} DCICMD,*LPDCICMD;
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* __WINE_DCIDDI_H */
