Re: [sigc] is possible make the emission of a signal private for a particular class?
- From: "R. Douglas Barbieri" <dooglio gmail com>
- To: Stephan Beal <stephan s11n net>
- Cc: Libsigc++ <libsigc-list gnome org>
- Subject: Re: [sigc] is possible make the emission of a signal private for a particular class?
- Date: Thu, 6 May 2010 18:12:30 -0700
Watch out when using libsigc++ with Qt4...Qt creates a macro called
"emit()." This creates all kinds of bizarre errors when you try to call
"emit()" on your signal object. I just #undef the Qt "emit()" macro at
the top of the class file and have no issues after that. But man did it
take me a long time to figure that out. :-)
(Sorry Stephen, but I meant to reply to all)
An
addendum: I dislike undeffing the emit() macro because I didn't know
what they created it in the first place, so this could cause something
somewhere else to break in Qt.
On Thu, May 6, 2010 at 2:12 AM, Stephan Beal
<stephan s11n net> wrote:
On Thu, May 6, 2010 at 8:45 AM, Murray Cumming
<murrayc murrayc com> wrote:
I'm not sure that Qt's signals can't be emitted by other classes, though
I'd like to know for sure.
It's true - Qt signals are either private or protected, i don't remember which. i do remember, however, adding proxy functions to allow other classes to fire the signal, e.g.
public:
void emitMySignal()
{
emit ....;
}
--
----- stephan beal
http://wanderinghorse.net/home/stephan/
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--
Doug Barbieri
http://www.slitechat.org/http://www.m2osw.com/
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