added wx/ipc.h and used/documented it

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15144 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/ipc.h

@@ -0,0 +1,41 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/ipc.h
+// Purpose:     wrapper around different wxIPC classes implementations
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     15.04.02
+// RCS-ID:      $Id$
+// Copyright:   (c) 2002 Vadim Zeitlin
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// Set wxUSE_DDE_FOR_IPC to 1 to use DDE for IPC under Windows. If it is set to
+// 0, or if the platform is not Windows, use TCP/IP for IPC implementation
+
+#if !defined(wxUSE_DDE_FOR_IPC)
+    #ifdef __WXMSW__
+        #define wxUSE_DDE_FOR_IPC 1
+    #else
+        #define wxUSE_DDE_FOR_IPC 0
+    #endif
+#endif // !defined(wxUSE_DDE_FOR_IPC)
+
+#if !defined(__WINDOWS__)
+    #undef wxUSE_DDE_FOR_IPC
+    #define wxUSE_DDE_FOR_IPC 0
+#endif
+
+#if wxUSE_DDE_FOR_IPC
+    #define wxConnection    wxDDEConnection
+    #define wxServer        wxDDEServer
+    #define wxClient        wxDDEClient
+
+    #include "wx/dde.h"
+#else // !wxUSE_DDE_FOR_IPC
+    #define wxConnection    wxTCPConnection
+    #define wxServer        wxTCPServer
+    #define wxClient        wxTCPClient
+
+    #include "wx/sckipc.h"
+#endif // wxUSE_DDE_FOR_IPC/!wxUSE_DDE_FOR_IPC
+