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有人能告诉我为什么这不能编译吗？早在 2007 年，我基本上从 Kholkoff ( http://lists.boost.org/Archives/boost/2007/04/120339.php ) 的一个示例中复制了它，关于超时套接字中的 reads() ：

void CClient::setResult(boost::optional<boost::system::error_code>*
                         a,boost::system::error_code b)
{
    *a = b;
}

我像这样绑定（）它：

timer.async_wait(boost::bind(&CClient::setResult, &timer_result, _1));

gcc 打印的错误对我来说是不可读的：

static assertion failed: WaitHandler type requirements not met  remote_server       line 499, external location: /usr/include/boost/asio/basic_deadline_timer.hpp   C/C++ Problem
no match for call to ‘(boost::_bi::bind_t<boost::_bi::unspecified, void (CClient::*)(boost::optional<boost::system::error_code>*, boost::system::error_code), boost::_bi::list2<boost::_bi::value<boost::optional<boost::system::error_code>*>, boost::arg<1> > >) (const boost::system::error_code&)’  remote_server       line 499, external location: /usr/include/boost/asio/basic_deadline_timer.hpp   C/C++ Problem
‘void (CClient::*)(boost::optional<boost::system::error_code>*, boost::system::error_code)’ is not a class, struct, or union type   remote_server       line 69, external location: /usr/include/boost/bind/bind.hpp    C/C++ Problem
make: *** No rule to make target `all'.             C/C++ Problem
make: *** [src/CClient.o] Error 1   remote_server           C/C++ Problem
  required from ‘class boost::_bi::bind_t<boost::_bi::unspecified, void (CClient::*)(boost::optional<boost::system::error_code>*, boost::system::error_code), boost::_bi::list2<boost::_bi::value<boost::optional<boost::system::error_code>*>, boost::arg<1> > >’  remote_server       line 15, external location: /usr/include/boost/bind/bind_template.hpp   C/C++ Problem
  required from here    CClient.cpp /remote_server/src  line 93 C/C++ Problem
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1 回答 1

4

怎么样

timer.async_wait(boost::bind(&CClient::setResult, this, &timer_result, _1));

setResult是成员函数，如果你使用async_waitin CClient，或者使用一些类型的对象CClient而不是this.

于 2012-09-11T07:24:16.437 回答