Moved DCX_* constants to winuser.h.
diff --git a/include/winuser.h b/include/winuser.h
index af1b9cb..e39ddff 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -2585,6 +2585,22 @@
#define HWND_NOTOPMOST ((HWND)-2)
#define HWND_MESSAGE ((HWND)-3)
+/* GetDCEx flags */
+#define DCX_WINDOW 0x00000001
+#define DCX_CACHE 0x00000002
+#define DCX_NORESETATTRS 0x00000004
+#define DCX_CLIPCHILDREN 0x00000008
+#define DCX_CLIPSIBLINGS 0x00000010
+#define DCX_PARENTCLIP 0x00000020
+#define DCX_EXCLUDERGN 0x00000040
+#define DCX_INTERSECTRGN 0x00000080
+#define DCX_EXCLUDEUPDATE 0x00000100
+#define DCX_INTERSECTUPDATE 0x00000200
+#define DCX_LOCKWINDOWUPDATE 0x00000400
+#define DCX_USESTYLE 0x00010000
+#define DCX_NORECOMPUTE 0x00100000
+#define DCX_VALIDATE 0x00200000
+
#define MF_INSERT 0x0000
#define MF_CHANGE 0x0080
#define MF_APPEND 0x0100
