dix: unexport and document EventSuppressForWindow()

Not used by any external drivers, and not supposed to be used by them,
so no need to keep it exported.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

dix/dix_priv.h

@@ -288,4 +288,19 @@ Bool MaybeDeliverEventToClient(WindowPtr pWindow,
 XRetCode EventSelectForWindow(WindowPtr pWindow, ClientPtr pClient, Mask mask)
     _X_ATTRIBUTE_NONNULL_ARG(1,2);
 
+/*
+ * @brief set block propagation of specific events on window
+ *
+ * @param pWindow       window to act on
+ * @param pClient       client to act on
+ * @param mask          mask of events to not propagate
+ * @param checkOptional set to w/ TRUE when window's optional structure changed
+ * @return X error code
+ */
+int EventSuppressForWindow(WindowPtr pWindow,
+                           ClientPtr pClient,
+                           Mask mask,
+                           Bool *checkOptional)
+    _X_ATTRIBUTE_NONNULL_ARG(1,2,4);
+
 #endif /* _XSERVER_DIX_PRIV_H */

include/dixevents.h

@@ -26,9 +26,4 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #ifndef DIXEVENTS_H
 #define DIXEVENTS_H
 
-extern _X_EXPORT int EventSuppressForWindow(WindowPtr /* pWin */ ,
-                                            ClientPtr /* client */ ,
-                                            Mask /* mask */ ,
-                                            Bool * /* checkOptional */ );
-
 #endif                          /* DIXEVENTS_H */