From: Michael Wetherell <mike.wetherell@ntlworld.com>
Date: Mon, 11 Apr 2005 23:24:30 +0000 (+0000)
Subject: Add a comment about covariant returns
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/eedf3bcbb39a0881f065e124ab3aadbf725dcbca

Add a comment about covariant returns


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33530 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/include/wx/archive.h b/include/wx/archive.h
index c38ac18ce6..574f8bf659 100644
--- a/include/wx/archive.h
+++ b/include/wx/archive.h
@@ -341,6 +341,8 @@ public:
     wxMBConv& GetConv() const { return *m_pConv; }
 
 protected:
+    // old compilers don't support covarient returns, so 'Do' methods are
+    // used to simulate them
     virtual wxArchiveEntry        *DoNewEntry() const = 0;
     virtual wxArchiveInputStream  *DoNewStream(wxInputStream& stream) const = 0;
     virtual wxArchiveOutputStream *DoNewStream(wxOutputStream& stream) const = 0;