Add class factories for filter streams. Also filters now follow the convention

that they own their parent if they are created with a pointer to the parent.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/filtall.cpp

@@ -0,0 +1,36 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        src/common/filtall.cpp
+// Purpose:     Link all filter streams
+// Author:      Mike Wetherell
+// RCS-ID:      $Id$
+// Copyright:   (c) 2006 Mike Wetherell
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#if wxUSE_STREAMS
+
+#if wxUSE_ZLIB
+#include "wx/zstream.h"
+#endif
+
+// Reference filter classes to ensure they are linked into a statically
+// linked program that uses Find or GetFirst to look for an filter handler.
+// It is in its own file so that the user can override this behaviour by
+// providing their own implementation.
+
+void wxUseFilterClasses()
+{
+#if wxUSE_ZLIB
+    wxZlibClassFactory();
+    wxGzipClassFactory();
+#endif
+}
+
+#endif // wxUSE_STREAMS