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Re: [lmi] Input-sequence editor testing
From: |
Greg Chicares |
Subject: |
Re: [lmi] Input-sequence editor testing |
Date: |
Fri, 24 Jun 2011 13:39:43 +0000 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Thunderbird/3.1.10 |
On 2011-06-24 13:12Z, Greg Chicares wrote:
>
> Please help me understand: an 'eventSink' parameter is used here...
[...]
> ...and in two similar new calls to ::Connect(); and that parameter is
> 'this' in all cases, which is the default argument...
More precisely, the default parameter is NULL, but the documentation:
http://docs.wxwidgets.org/trunk/classwx_evt_handler.html#78719e8b82c9f9c6e4056b3449df1943
says "If it is omitted, this is used". And the wx-2.9 documentation:
http://docs.wxwidgets.org/2.9/classwx_evt_handler.html#1e8b5fc4c7e7f6d32d40bc00d4108ba4
seems the same, so I'm guessing that this change isn't required for
wx-2.9.2 compatibility. I suppose the documentation means that wx
detects the NULL default and uses 'this' instead in that case. But I
still don't understand why we can't just omit it.
I tried omitting it experimentally, though, and it crashed, so there
definitely seems to be something important that I'm just not seeing.