common event code

[wxWidgets.git] / include / wx / private / fdiodispatcher.h

diff --git a/include/wx/private/fdiodispatcher.h b/include/wx/private/fdiodispatcher.h
index 04128f858bc85c921897238f2105d390005de7c4..f37e0217a457e8a9dbfdcdd508e049de8b8b78bb 100644 (file)
--- a/include/wx/private/fdiodispatcher.h
+++ b/include/wx/private/fdiodispatcher.h
@@ -67,8 +67,13 @@ public:
     // unregister descriptor previously registered with RegisterFD()
     virtual bool UnregisterFD(int fd) = 0;
 
-    // wait for an event for at most timeout milliseconds and process it
-    virtual void Dispatch(int timeout = TIMEOUT_INFINITE) = 0;
+    // check if any events are currently available without dispatching them
+    virtual bool HasPending() const = 0;
+
+    // wait for an event for at most timeout milliseconds and process it;
+    // return the number of events processed (possibly 0 if timeout expired) or
+    // -1 if an error occurred
+    virtual int Dispatch(int timeout = TIMEOUT_INFINITE) = 0;
 
     virtual ~wxFDIODispatcher() { }
 };