{"id":1430,"date":"2018-06-21T17:48:58","date_gmt":"2018-06-21T09:48:58","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1430"},"modified":"2018-06-21T17:48:58","modified_gmt":"2018-06-21T09:48:58","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3%e4%bf%a1%e5%8f%b7%e6%a7%bd%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1430","title":{"rendered":"\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\u673a\u5236"},"content":{"rendered":"<div class=\"article-title-box\">\n<h1 class=\"title-article\">\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\u673a\u5236<\/h1>\n<\/div>\n<div class=\"article-info-box\">\n<div class=\"article-bar-top d-flex\"><span class=\"time\">2016\u5e7412\u670808\u65e5 20:00:42<\/span><\/p>\n<div class=\"float-right\"><span class=\"read-count\">\u9605\u8bfb\u6570\uff1a3530<\/span><\/div>\n<\/div>\n<\/div>\n<article>\n<div id=\"article_content\" class=\"article_content clearfix csdn-tracking-statistics\" data-pid=\"blog\" data-mod=\"popu_307\" data-dsm=\"post\">\n<div class=\"htmledit_views\">\n<p>\u00a0<a href=\"http:\/\/blog.chinaunix.net\/uid-14827902-id-2784490.html\" target=\"_blank\" rel=\"nofollow noopener\">\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\uff08\u4e00\uff09<\/a><\/p>\n<div>\n<p>\u8fd9\u7bc7\u6587\u7ae0\u6765\u81ea\u4e8e A Deeper Look at Signals and Slots\uff0cScott Collins 2005.12.19\u3002\u9700\u8981\u8bf4\u660e\u7684\u662f\uff0c\u6211\u4eec\u8fd9\u91cc\u6240\u8bf4\u7684\u201c\u4fe1\u53f7\u69fd\u201d\u4e0d\u4ec5\u4ec5\u662f\u6307 Qt \u5e93\u91cc\u9762\u7684\u4fe1\u53f7\u69fd\uff0c\u800c\u662f\u7ad9\u5728\u4e00\u4e2a\u5168\u5c40\u7684\u9ad8\u5ea6\uff0c\u4ece\u7cfb\u7edf\u7684\u89d2\u5ea6\u6765\u7406\u89e3\u4fe1\u53f7\u69fd\u3002\u6240\u4ee5\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0cQt \u4fe1\u53f7\u69fd\u4ec5\u4ec5\u4f5c\u4e3a\u4e00\u79cd\u5b9e\u73b0\u6765\u4ecb\u7ecd\uff0c\u6211\u4eec\u8fd8\u5c06\u4ecb\u7ecd\u53e6\u5916\u4e00\u79cd\u4fe1\u53f7\u69fd\u7684\u5b9e\u73b0\u2014\u2014boost::signal\u3002\u56e0\u6b64\uff0c\u5f53\u4f60\u5728\u6587\u7ae0\u4e2d\u770b\u5230\u4e00\u4e9b\u4fe1\u53f7\u7684\u540d\u5b57\u65f6\uff0c\u6216\u8bb8\u4ec5\u4ec5\u662f\u4e3a\u4e86\u63cf\u8ff0\u65b9\u4fbf\u800c\u675c\u64b0\u7684\uff0c\u5b9e\u9645\u5e76\u6ca1\u6709\u8fd9\u4e2a\u4fe1\u53f7\u3002<\/p>\n<p>\u4ec0\u4e48\u662f\u4fe1\u53f7\u69fd\uff1f<\/p>\n<p>\u8fd9\u4e2a\u95ee\u9898\u6211\u4eec\u53ef\u4ee5\u4ece\u4e24\u4e2a\u89d2\u5ea6\u6765\u56de\u7b54\uff0c\u4e00\u4e2a\u7b80\u77ed\u4e00\u4e9b\uff0c\u53e6\u5916\u4e00\u4e2a\u5219\u957f\u4e9b\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u5148\u7528\u6700\u7b80\u6d01\u7684\u8bed\u8a00\u6765\u56de\u7b54\u8fd9\u4e2a\u95ee\u9898\u2014\u2014\u4ec0\u4e48\u662f\u4fe1\u53f7\u69fd\uff1f<\/p>\n<ul>\n<li>\u4fe1\u53f7\u69fd\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u4e00\u79cd\u5b9e\u73b0\uff0c\u6216\u8005\u8bf4\u662f\u4e00\u79cd\u5347\u534e\uff1b<\/li>\n<li>\u4e00\u4e2a\u4fe1\u53f7\u5c31\u662f\u4e00\u4e2a\u80fd\u591f\u88ab\u89c2\u5bdf\u7684\u4e8b\u4ef6\uff0c\u6216\u8005\u81f3\u5c11\u662f\u4e8b\u4ef6\u5df2\u7ecf\u53d1\u751f\u7684\u4e00\u79cd\u901a\u77e5\uff1b<\/li>\n<li>\u4e00\u4e2a\u69fd\u5c31\u662f\u4e00\u4e2a\u89c2\u5bdf\u8005\uff0c\u901a\u5e38\u5c31\u662f\u5728\u88ab\u89c2\u5bdf\u7684\u5bf9\u8c61\u53d1\u751f\u6539\u53d8\u7684\u65f6\u5019\u2014\u2014\u4e5f\u53ef\u4ee5\u8bf4\u662f\u4fe1\u53f7\u53d1\u51fa\u7684\u65f6\u5019\u2014\u2014\u88ab\u8c03\u7528\u7684\u51fd\u6570\uff1b<\/li>\n<li>\u4f60\u53ef\u4ee5\u5c06\u4fe1\u53f7\u548c\u69fd\u8fde\u63a5\u8d77\u6765\uff0c\u5f62\u6210\u4e00\u79cd\u89c2\u5bdf\u8005-\u88ab\u89c2\u5bdf\u8005\u7684\u5173\u7cfb\uff1b<\/li>\n<li>\u5f53\u4e8b\u4ef6\u6216\u8005\u72b6\u6001\u53d1\u751f\u6539\u53d8\u7684\u65f6\u5019\uff0c\u4fe1\u53f7\u5c31\u4f1a\u88ab\u53d1\u51fa\uff1b\u540c\u65f6\uff0c\u4fe1\u53f7\u53d1\u51fa\u8005\u6709\u4e49\u52a1\u8c03\u7528\u6240\u6709\u6ce8\u518c\u7684\u5bf9\u8fd9\u4e2a\u4e8b\u4ef6\uff08\u4fe1\u53f7\uff09\u611f\u5174\u8da3\u7684\u51fd\u6570\uff08\u69fd\uff09\u3002<\/li>\n<\/ul>\n<p>\u4fe1\u53f7\u548c\u69fd\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u3002\u4e00\u4e2a\u4fe1\u53f7\u53ef\u4ee5\u8fde\u63a5\u591a\u4e2a\u69fd\uff0c\u800c\u4e00\u4e2a\u69fd\u4e5f\u53ef\u4ee5\u76d1\u542c\u591a\u4e2a\u4fe1\u53f7\u3002<\/p>\n<p>\u4fe1\u53f7\u53ef\u4ee5\u6709\u9644\u52a0\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u7a97\u53e3\u5173\u95ed\u7684\u65f6\u5019\u53ef\u80fd\u53d1\u51fa 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\u4fe1\u53f7\uff0c\u6211\u4eec\u5c31\u77e5\u9053\u8fd9\u662f\u7a97\u53e3\u5173\u95ed\u4e8b\u4ef6\u53d1\u751f\u65f6\u4f1a\u53d1\u51fa\u7684\u3002<\/p>\n<p>\u4fe1\u53f7\u69fd\u5b9e\u9645\u662f\u4e0e\u8bed\u8a00\u65e0\u5173\u7684\uff0c\u6709\u5f88\u591a\u65b9\u6cd5\u90fd\u53ef\u4ee5\u5b9e\u73b0\u4fe1\u53f7\u69fd\uff0c\u4e0d\u540c\u7684\u5b9e\u73b0\u673a\u5236\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u69fd\u5dee\u522b\u5f88\u5927\u3002\u4fe1\u53f7\u69fd\u8fd9\u4e00\u672f\u8bed\u6700\u521d\u6765\u81ea Trolltech \u516c\u53f8\u7684 Qt \u5e93\uff08\u73b0\u5728\u5df2\u7ecf\u88ab Nokia \u6536\u8d2d\uff09\u30021994\u5e74\uff0cQt \u7684\u7b2c\u4e00\u4e2a\u7248\u672c\u53d1\u5e03\uff0c\u4e3a\u6211\u4eec\u5e26\u6765\u4e86\u4fe1\u53f7\u69fd\u7684\u6982\u5ff5\u3002\u8fd9\u4e00\u6982\u5ff5\u7acb\u523b\u5f15\u8d77\u8ba1\u7b97\u673a\u79d1\u5b66\u754c\u7684\u6ce8\u610f\uff0c\u63d0\u51fa\u4e86\u591a\u79cd\u4e0d\u540c\u7684\u5b9e\u73b0\u3002\u5982\u4eca\uff0c\u4fe1\u53f7\u69fd\u4f9d\u7136\u662f Qt \u5e93\u7684\u6838\u5fc3\u4e4b\u4e00\uff0c\u5176\u4ed6\u8bb8\u591a\u5e93\u4e5f\u63d0\u4f9b\u4e86\u7c7b\u4f3c\u7684\u5b9e\u73b0\uff0c\u751a\u81f3\u51fa\u73b0\u4e86\u4e00\u4e9b\u4e13\u95e8\u63d0\u4f9b\u8fd9\u4e00\u673a\u5236\u7684\u5de5\u5177\u5e93\u3002<\/p>\n<p>\u7b80\u5355\u4e86\u89e3\u4fe1\u53f7\u69fd\u4e4b\u540e\uff0c\u6211\u4eec\u518d\u6765\u4ece\u53e6\u5916\u4e00\u4e2a\u89d2\u5ea6\u56de\u7b54\u8fd9\u4e2a\u95ee\u9898\uff1a\u4ec0\u4e48\u662f\u4fe1\u53f7\u69fd\uff1f\u5b83\u4eec\u4ece\u4f55\u800c\u6765\uff1f<\/p>\n<p>\u524d\u9762\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u4fe1\u53f7\u69fd\u76f8\u5173\u7684\u6982\u5ff5\u3002\u4e0b\u9762\u6211\u4eec\u5c06\u4ece\u66f4\u7ec6\u81f4\u7684\u89d2\u5ea6\u6765\u63a2\u8ba8\uff0c\u4fe1\u53f7\u69fd\u673a\u5236\u662f\u600e\u6837\u4e00\u6b65\u6b65\u53d1\u5c55\u7684\uff0c\u4ee5\u53ca\u600e\u6837\u5728\u4f60\u81ea\u5df1\u7684\u4ee3\u7801\u4e2d\u4f7f\u7528\u5b83\u4eec\u3002<\/p>\n<p>\u7a0b\u5e8f\u8bbe\u8ba1\u4e2d\u5f88\u91cd\u8981\u7684\u4e00\u90e8\u5206\u662f\u7ec4\u4ef6\u4ea4\u4e92\uff1a\u7cfb\u7edf\u7684\u4e00\u90e8\u5206\u9700\u8981\u544a\u8bc9\u53e6\u4e00\u90e8\u5206\u53bb\u5b8c\u6210\u4e00\u4e9b\u64cd\u4f5c\u3002\u8ba9\u6211\u4eec\u4ece\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u5f00\u59cb\uff1a<\/p>\n<\/div>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ C++<br \/>\nclass\u00a0Button<br \/>\n{<br \/>\npublic:<br \/>\nvoid\u00a0clicked();\u00a0\/\/ something that happens: Buttons may be clicked<br \/>\n};<br \/>\nclass\u00a0Page<br \/>\n{<br \/>\npublic:<br \/>\nvoid\u00a0reload();\u00a0\/\/ ...which I might want to do when a Button is clicked<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0cPage \u7c7b\u77e5\u9053\u5982\u4f55\u91cd\u65b0\u8f7d\u5165\u9875\u9762\uff08reload\uff09\uff0cButton \u6709\u4e00\u4e2a\u52a8\u4f5c\u662f\u70b9\u51fb\uff08click\uff09\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570\u8fd4\u56de\u5f53\u524d\u9875\u9762 currentPage()\uff0c\u90a3\u4e48\uff0c\u5f53 button \u88ab\u70b9\u51fb\u7684\u65f6\u5019\uff0c\u5f53\u524d\u9875\u9762\u5e94\u8be5\u88ab\u91cd\u65b0\u8f7d\u5165\u3002<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ C++ --- making the connection directly<br \/>\nvoid\u00a0Button::clicked()<br \/>\n{<br \/>\ncurrentPage()-&gt;reload();\u00a0\/\/ Buttons know exactly what to do when clicked<br \/>\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u770b\u8d77\u6765\u5e76\u4e0d\u5f88\u597d\u3002\u56e0\u4e3a Button \u8fd9\u4e2a\u7c7b\u540d\u4f3c\u4e4e\u6697\u793a\u4e86\u8fd9\u662f\u4e00\u4e2a\u53ef\u91cd\u7528\u7684\u7c7b\uff0c\u4f46\u662f\u8fd9\u4e2a\u7c7b\u7684\u70b9\u51fb\u64cd\u4f5c\u5374\u540c Page \u7d27\u7d27\u5730\u8026\u5408\u5728\u4e00\u8d77\u4e86\u3002\u8fd9\u4f7f\u5f97\u53ea\u8981 button \u4e00\u88ab\u70b9\u51fb\uff0c\u5fc5\u5b9a\u8c03\u7528 currentPage() \u7684 reload() \u51fd\u6570\u3002\u8fd9\u6839\u672c\u4e0d\u80fd\u88ab\u91cd\u7528\uff0c\u6216\u8bb8\u628a\u5b83\u6539\u540d\u53eb PageReloadButton \u66f4\u597d\u4e00\u4e9b\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u4e0d\u5f97\u4e0d\u8bf4\uff0c\u8fd9\u786e\u5b9e\u662f\u4e00\u79cd\u5b9e\u73b0\u65b9\u5f0f\u3002\u5982\u679c Button::click() \u8fd9\u4e2a\u51fd\u6570\u662f virtual \u7684\uff0c\u90a3\u4e48\u4f60\u5b8c\u5168\u53ef\u4ee5\u5199\u4e00\u4e2a\u65b0\u7c7b\u53bb\u7ee7\u627f\u8fd9\u4e2a Button\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ C++ --- connecting to different actions by specializing<br \/>\nclass\u00a0Button<br \/>\n{<br \/>\npublic:<br \/>\nvirtual\u00a0void\u00a0clicked()\u00a0=\u00a00;\u00a0\/\/ Buttons have no idea what to do when clicked<br \/>\n};<\/p>\n<p>class\u00a0PageReloadButton\u00a0:\u00a0public\u00a0Button<br \/>\n{<br \/>\npublic:<br \/>\nvirtual\u00a0void\u00a0clicked()\u00a0{<br \/>\ncurrentPage()-&gt;reload();\u00a0\/\/ ...specialize Button to connect it to a specific action<br \/>\n}<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u597d\u4e86\uff0c\u73b0\u5728 Button \u53ef\u4ee5\u88ab\u91cd\u7528\u4e86\u3002\u4f46\u662f\u8fd9\u5e76\u4e0d\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u5f15\u5165\u56de\u8c03<\/p>\n<p>\u8ba9\u6211\u4eec\u505c\u4e0b\u6765\uff0c\u56de\u60f3\u4e00\u4e0b\u5728\u53ea\u6709 C \u7684\u65f6\u4ee3\uff0c\u6211\u4eec\u8be5\u5982\u4f55\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u5982\u679c\u53ea\u6709 C\uff0c\u5c31\u4e0d\u5b58\u5728 virtual \u8fd9\u79cd\u4e1c\u897f\u3002\u91cd\u7528\u6709\u5f88\u591a\u79cd\u65b9\u5f0f\uff0c\u4f46\u662f\u7531\u4e8e\u6ca1\u6709\u4e86\u7c7b\u7684\u5e2e\u52a9\uff0c\u6211\u4eec\u91c7\u7528\u53e6\u5916\u7684\u89e3\u51b3\u65b9\u6848\uff1a\u51fd\u6570\u6307\u9488\u3002<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/* C --- connecting to different actions via function pointers *\/<br \/>\nvoid\u00a0reloadPage_action(\u00a0void*\u00a0)\u00a0\/* one possible action when a Button is clicked *\/<br \/>\n{<br \/>\nreloadPage(currentPage());<br \/>\n}<\/p>\n<p>void\u00a0loadPage_action(\u00a0void*\u00a0url\u00a0)\u00a0\/* another possible action when a Button is clicked *\/<br \/>\n{<br \/>\nloadPage(currentPage(),\u00a0(char*)url);<br \/>\n}<\/p>\n<p>struct\u00a0Button\u00a0{<br \/>\n\/* ...now I keep a (changeable) pointer to the function to be called *\/<br \/>\nvoid\u00a0(*actionFunc_)();<br \/>\nvoid*\u00a0actionFuncData_;<br \/>\n};<\/p>\n<p>void\u00a0buttonClicked(\u00a0Button*\u00a0button\u00a0)<br \/>\n{<br \/>\n\/* call the attached function, whatever it might be *\/<br \/>\nif\u00a0(\u00a0button\u00a0&amp;&amp;\u00a0button-&gt;actionFunc_\u00a0)<br \/>\n(*button-&gt;actionFunc_)(button-&gt;actionFuncData_);<br \/>\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u5c31\u662f\u901a\u5e38\u6240\u8bf4\u7684\u201c\u56de\u8c03\u201d\u3002buttonClicked() \u51fd\u6570\u5728\u7f16\u8bd1\u671f\u5e76\u4e0d\u77e5\u9053\u8981\u8c03\u7528\u54ea\u4e00\u4e2a\u51fd\u6570\u3002\u88ab\u8c03\u7528\u7684\u51fd\u6570\u662f\u5728\u8fd0\u884c\u671f\u4f20\u8fdb\u6765\u7684\u3002\u8fd9\u6837\uff0c\u6211\u4eec\u7684 Button \u5c31\u53ef\u4ee5\u88ab\u91cd\u7528\u4e86\uff0c\u56e0\u4e3a\u6211\u4eec\u53ef\u4ee5\u5728\u8fd0\u884c\u65f6\u5c06\u4e0d\u540c\u7684\u51fd\u6570\u6307\u9488\u4f20\u9012\u8fdb\u6765\uff0c\u4ece\u800c\u83b7\u5f97\u4e0d\u540c\u7684\u70b9\u51fb\u64cd\u4f5c\u3002<\/p>\n<p>\u589e\u52a0\u7c7b\u578b\u5b89\u5168<\/p>\n<p>\u5bf9\u4e8e C++ \u6216\u8005 Java \u7a0b\u5e8f\u5458\u6765\u8bf4\uff0c\u603b\u662f\u4e0d\u559c\u6b22\u8fd9\u4e48\u505a\u3002\u56e0\u4e3a\u8fd9\u4e0d\u662f\u7c7b\u578b\u5b89\u5168\u7684\uff08\u6ce8\u610f url \u6709\u4e00\u6b65\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\uff09\u3002<\/p>\n<p>\u6211\u4eec\u4e3a\u4ec0\u4e48\u9700\u8981\u7c7b\u578b\u5b89\u5168\u5462\uff1f\u4e00\u4e2a\u5bf9\u8c61\u7684\u7c7b\u578b\u5176\u5b9e\u6697\u793a\u4e86\u4f60\u5c06\u5982\u4f55\u4f7f\u7528\u8fd9\u4e2a\u5bf9\u8c61\u3002\u6709\u4e86\u660e\u786e\u7684\u5bf9\u8c61\u7c7b\u578b\uff0c\u4f60\u5c31\u53ef\u4ee5\u8ba9\u7f16\u8bd1\u5668\u5e2e\u52a9\u4f60\u68c0\u67e5\u4f60\u7684\u4ee3\u7801\u662f\u4e0d\u662f\u88ab\u6b63\u786e\u7684\u4f7f\u7528\u4e86\uff0c\u5982\u540c\u4f60\u753b\u4e86\u4e00\u4e2a\u8fb9\u754c\uff0c\u544a\u8bc9\u7f16\u8bd1\u5668\u8bf4\uff0c\u5982\u679c\u6709\u4eba\u8d8a\u754c\uff0c\u5c31\u8981\u62a5\u9519\u3002\u7136\u800c\uff0c\u5982\u679c\u6ca1\u6709\u7c7b\u578b\u5b89\u5168\uff0c\u4f60\u5c31\u4e22\u5931\u4e86\u8fd9\u79cd\u4f18\u52bf\uff0c\u7f16\u8bd1\u5668\u4e5f\u5c31\u4e0d\u80fd\u5e2e\u52a9\u4f60\u5b8c\u6210\u8fd9\u79cd\u7ef4\u62a4\u3002\u8fd9\u5c31\u5982\u540c\u4f60\u5f00\u8f66\u4e00\u6837\u3002\u53ea\u8981\u4f60\u7684\u901f\u5ea6\u8db3\u591f\uff0c\u4f60\u5c31\u53ef\u4ee5\u8ba9\u4f60\u7684\u6c7d\u8f66\u98de\u8d77\u6765\uff0c\u4f46\u662f\uff0c\u4e00\u822c\u6765\u8bf4\uff0c\u8fd9\u79cd\u901f\u5ea6\u5c31\u4f1a\u63d0\u9192\u4f60\uff0c\u8fd9\u592a\u4e0d\u5b89\u5168\u4e86\u3002\u540c\u65f6\u8fd8\u4f1a\u6709\u4e00\u4e9b\u88c5\u7f6e\uff0c\u6bd4\u5982\u96f7\u8fbe\u4e4b\u7c7b\uff0c\u4e5f\u4f1a\u65f6\u65f6\u5e2e\u4f60\u68c0\u67e5\u8fd9\u79cd\u60c5\u51b5\u3002\u8fd9\u5c31\u5982\u540c\u7f16\u8bd1\u5668\u5e2e\u6211\u4eec\u505a\u7684\u90a3\u6837\uff0c\u662f\u6211\u4eec\u51fa\u6d74\u4e00\u79cd\u5b89\u5168\u4f7f\u7528\u7684\u8303\u56f4\u5185\u3002<\/p>\n<p>\u56de\u8fc7\u6765\u518d\u770b\u770b\u6211\u4eec\u7684\u4ee3\u7801\u3002\u4f7f\u7528 C \u4e0d\u662f\u7c7b\u578b\u5b89\u5168\u7684\uff0c\u4f46\u662f\u4f7f\u7528 C++\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u56de\u8c03\u7684\u51fd\u6570\u6307\u9488\u548c\u6570\u636e\u653e\u5728\u4e00\u4e2a\u7c7b\u91cc\u9762\uff0c\u4ece\u800c\u83b7\u5f97\u7c7b\u578b\u5b89\u5168\u7684\u4f18\u52bf\u3002\u4f8b\u5982\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ re-usable actions, C++ style (callback objects)<br \/>\nclass\u00a0AbstractAction<br \/>\n{<br \/>\npublic:<br \/>\nvirtual\u00a0void\u00a0execute()\u00a0=\u00a00;\u00a0\/\/ sub-classes re-implement this to actually do something<br \/>\n};<\/p>\n<p>class\u00a0Button<br \/>\n{<br \/>\n\/\/ ...now I keep a (changeable) pointer to the action to be executed<br \/>\nAbstractAction*\u00a0action_;<br \/>\n};<\/p>\n<p>void\u00a0Button::clicked()<br \/>\n{<br \/>\n\/\/ execute the attached action, whatever it may be<br \/>\nif\u00a0(\u00a0action_\u00a0)<br \/>\naction_-&gt;execute();<br \/>\n}<\/p>\n<p>class\u00a0PageReloadAction\u00a0:\u00a0public\u00a0AbstractAction<br \/>\n\/\/ one possible action when a Button is clicked<br \/>\n{<br \/>\npublic:<br \/>\nvirtual\u00a0void\u00a0execute()\u00a0{<br \/>\ncurrentPage()-&gt;reload();<br \/>\n}<br \/>\n};<br \/>\nclass\u00a0PageLoadAction\u00a0:\u00a0public\u00a0AbstractAction<br \/>\n\/\/ another possible action when a Button is clicked<br \/>\n{<br \/>\npublic:<br \/>\n\/\/ ...<br \/>\nvirtual\u00a0void\u00a0execute()\u00a0{<br \/>\ncurrentPage()-&gt;load(url_);<br \/>\n}<br \/>\nprivate:<br \/>\nstd::string\u00a0url_;<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u597d\u4e86\uff01\u6211\u4eec\u7684 Button \u5df2\u7ecf\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u91cd\u7528\u4e86\uff0c\u5e76\u4e14\u4e5f\u662f\u7c7b\u578b\u5b89\u5168\u7684\uff0c\u518d\u4e5f\u6ca1\u6709\u4e86\u5f3a\u5236\u7c7b\u578b\u8f6c\u6362\u3002\u8fd9\u79cd\u5b9e\u73b0\u5df2\u7ecf\u53ef\u4ee5\u89e3\u51b3\u7cfb\u7edf\u4e2d\u9047\u5230\u7684\u7edd\u5927\u90e8\u5206\u95ee\u9898\u4e86\u3002\u4f3c\u4e4e\u73b0\u5728\u7684\u89e3\u51b3\u65b9\u6848\u540c\u524d\u9762\u7684\u7c7b\u4f3c\uff0c\u90fd\u662f\u7ee7\u627f\u4e86\u4e00\u4e2a\u7c7b\u3002\u53ea\u4e0d\u8fc7\u73b0\u5728\u6211\u4eec\u5bf9\u52a8\u4f5c\u8fdb\u884c\u4e86\u62bd\u8c61\uff0c\u800c\u4e4b\u524d\u662f\u5bf9 Button \u8fdb\u884c\u7684\u62bd\u8c61\u3002\u8fd9\u5f88\u50cf\u524d\u9762 C \u7684\u5b9e\u73b0\uff0c\u6211\u4eec\u5c06\u4e0d\u540c\u7684\u52a8\u4f5c\u548c Button \u5173\u8054\u8d77\u6765\u3002\u73b0\u5728\uff0c\u6211\u4eec\u4e00\u6b65\u6b65\u627e\u5230\u4e00\u79cd\u6bd4\u8f83\u4ee4\u4eba\u6ee1\u610f\u7684\u65b9\u6cd5\u3002<\/p>\n<p><a href=\"http:\/\/blog.chinaunix.net\/uid-14827902-id-2784491.html\" target=\"_blank\" rel=\"nofollow noopener\">\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\uff08\u4e8c\uff09<\/a><\/p>\n<div>\n<p>\u591a\u5bf9\u591a<\/p>\n<p>\u4e0b\u4e00\u4e2a\u95ee\u9898\u662f\uff0c\u6211\u4eec\u80fd\u591f\u5728\u70b9\u51fb\u4e00\u6b21\u91cd\u65b0\u8f7d\u5165\u6309\u94ae\u4e4b\u540e\u505a\u591a\u4e2a\u64cd\u4f5c\u5417\uff1f\u4e5f\u5c31\u662f\u8ba9\u4fe1\u53f7\u548c\u69fd\u5b9e\u73b0\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff1f<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u53ea\u9700\u8981\u5229\u7528\u4e00\u4e2a\u666e\u901a\u7684\u94fe\u8868\uff0c\u5c31\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\u4e86\u3002\u6bd4\u5982\uff0c\u5982\u4e0b\u7684\u5b9e\u73b0\uff1a<\/p>\n<\/div>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>class\u00a0MultiAction\u00a0:\u00a0public\u00a0AbstractAction<br \/>\n\/\/ ...an action that is composed of zero or more other actions;<br \/>\n\/\/ executing it is really executing each of the sub-actions<br \/>\n{<br \/>\npublic:<br \/>\n\/\/ ...<br \/>\nvirtual\u00a0void\u00a0execute();<br \/>\nprivate:<br \/>\nstd::vector&lt;AbstractAction*&gt;\u00a0actionList_;<br \/>\n\/\/ ...or any reasonable collection machinery<br \/>\n};<\/p>\n<p>void\u00a0MultiAction::execute()<br \/>\n{<br \/>\n\/\/ call execute() on each action in actionList_<br \/>\nstd::for_each(\u00a0actionList_.begin(),<br \/>\nactionList_.end(),<br \/>\nboost::bind(&amp;AbstractAction::execute,\u00a0_1)\u00a0);<br \/>\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u5c31\u662f\u5176\u4e2d\u7684\u4e00\u79cd\u5b9e\u73b0\u3002\u4e0d\u8981\u89c9\u5f97\u8fd9\u79cd\u5b9e\u73b0\u770b\u4e0a\u53bb\u6ca1\u4ec0\u4e48\u6c34\u5e73\uff0c\u5b9e\u9645\u4e0a\u6211\u4eec\u53d1\u73b0\u8fd9\u5c31\u662f\u4e00\u79cd\u76f8\u5f53\u7b80\u6d01\u7684\u65b9\u6cd5\u3002\u540c\u65f6\uff0c\u4e0d\u8981\u7ea0\u7ed3\u4e8e\u6211\u4eec\u4ee3\u7801\u4e2d\u7684 std:: \u548c boost:: \u8fd9\u4e9b\u547d\u540d\u7a7a\u95f4\uff0c\u4f60\u5b8c\u5168\u53ef\u4ee5\u7528\u53e6\u5916\u7684\u7c7b\uff0c\u5f3a\u8c03\u4e00\u4e0b\uff0c\u8fd9\u53ea\u662f\u4e00\u79cd\u53ef\u80fd\u7684\u5b9e\u73b0\u3002\u73b0\u5728\uff0c\u6211\u4eec\u7684\u4e00\u4e2a\u52a8\u4f5c\u53ef\u4ee5\u8fde\u63a5\u591a\u4e2a button \u4e86\uff0c\u5f53\u7136\uff0c\u4e5f\u53ef\u4ee5\u662f\u522b\u7684 Action \u7684\u4f7f\u7528\u8005\u3002\u73b0\u5728\uff0c\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u591a\u5bf9\u591a\u7684\u673a\u5236\u3002\u901a\u8fc7\u5c06 AbstractAction* \u66ff\u6362\u6210 boost::shared_ptr\uff0c\u53ef\u4ee5\u89e3\u51b3 AbstractAction \u7684\u5f52\u5c5e\u95ee\u9898\uff0c\u540c\u65f6\u4fdd\u6301\u539f\u6709\u7684\u591a\u5bf9\u591a\u7684\u5173\u7cfb\u3002<\/p>\n<p>\u8fd9\u4f1a\u6709\u5f88\u591a\u7684\u7c7b\uff01<\/p>\n<p>\u5982\u679c\u4f60\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4f7f\u7528\u4e0a\u9762\u7684\u673a\u5236\uff0c\u5f88\u591a\u5c31\u4f1a\u53d1\u73b0\uff0c\u6211\u4eec\u5fc5\u987b\u4e3a\u6bcf\u4e00\u4e2a action \u5b9a\u4e49\u4e00\u4e2a\u7c7b\uff0c\u8fd9\u5c06\u4e0d\u53ef\u907f\u514d\u5730\u5f15\u8d77\u7c7b\u7206\u70b8\u3002\u81f3\u4eca\u4e3a\u6b62\uff0c\u6211\u4eec\u524d\u9762\u6240\u8bf4\u7684\u6240\u6709\u5b9e\u73b0\u90fd\u5b58\u5728\u8fd9\u4e2a\u95ee\u9898\u3002\u4e0d\u8fc7\uff0c\u6211\u4eec\u4e4b\u540e\u5c06\u7740\u91cd\u8ba8\u8bba\u8fd9\u4e2a\u95ee\u9898\uff0c\u73b0\u5728\u5148\u4e0d\u8981\u7ea0\u7ed3\u5728\u8fd9\u91cc\u5566\uff01<\/p>\n<p>\u7279\u5316\uff01\u7279\u5316\uff01<\/p>\n<p>\u5f53\u6211\u4eec\u5f00\u59cb\u5de5\u4f5c\u7684\u65f6\u5019\uff0c\u6211\u4eec\u901a\u8fc7\u5c06\u6bcf\u4e00\u4e2a button \u8d4b\u4e88\u4e0d\u540c\u7684 action\uff0c\u5b9e\u73b0 Button \u7c7b\u7684\u91cd\u7528\u3002\u8fd9\u5b9e\u9645\u662f\u4e00\u79cd\u7279\u5316\u3002\u7136\u800c\uff0c\u6211\u4eec\u7684\u95ee\u9898\u662f\uff0caction \u7684\u7279\u5316\u88ab\u653e\u5728\u4e86\u56fa\u5b9a\u7684\u7c7b\u5c42\u6b21\u4e2d\uff0c\u5728\u8fd9\u91cc\u5c31\u662f\u8fd9\u4e9b Button \u7c7b\u3002\u8fd9\u610f\u5473\u7740\uff0c\u6211\u4eec\u7684 action \u5f88\u96be\u88ab\u66f4\u5927\u89c4\u6a21\u7684\u91cd\u7528\uff0c\u56e0\u4e3a\u6bcf\u4e00\u4e2a action \u5b9e\u9645\u90fd\u662f\u4e0e Button \u7c7b\u7ed1\u5b9a\u7684\u3002\u90a3\u4e48\uff0c\u6211\u4eec\u6362\u4e2a\u601d\u8def\uff0c\u80fd\u4e0d\u80fd\u5c06\u8fd9\u79cd\u7279\u5316\u653e\u5230\u4fe1\u53f7\u4e0e\u69fd\u8fde\u63a5\u7684\u65f6\u5019\u8fdb\u884c\u5462\uff1f\u8fd9\u6837\uff0caction \u548c button \u8fd9\u4e24\u8005\u90fd\u4e0d\u5fc5\u8fdb\u884c\u7279\u5316\u4e86\u3002<\/p>\n<p>\u51fd\u6570\u5bf9\u8c61<\/p>\n<p>\u5c06\u4e00\u4e2a\u7c7b\u7684\u51fd\u6570\u8fdb\u884c\u4e00\u5b9a\u66fe\u5ea6\u7684\u5c01\u88c5\uff0c\u8fd9\u4e2a\u601d\u60f3\u76f8\u5f53\u6709\u7528\u3002\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u7684 Action \u7c7b\u7684\u5b58\u5728\uff0c\u5c31\u662f\u5c06 execute() \u8fd9\u4e2a\u51fd\u6570\u8fdb\u884c\u5c01\u88c5\uff0c\u5176\u4ed6\u522b\u65e0\u7528\u5904\u3002\u8fd9\u5728 C++ \u91cc\u9762\u8fd8\u662f\u6bd4\u8f83\u666e\u904d\u7684\uff0c\u5f88\u591a\u65f6\u5019\u6211\u4eec\u7528 ++ \u7684\u7279\u6027\u91cd\u65b0\u5c01\u88c5\u51fd\u6570\uff0c\u8ba9\u7c7b\u7684\u884c\u4e3a\u770b\u8d77\u6765\u5c31\u50cf\u51fd\u6570\u4e00\u6837\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u91cd\u8f7d operator() \u8fd0\u7b97\u7b26\uff0c\u5c31\u53ef\u4ee5\u8ba9\u7c7b\u770b\u8d77\u6765\u5f88\u50cf\u4e00\u4e2a\u51fd\u6570\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>class\u00a0AbstractAction<br \/>\n{<br \/>\npublic:<br \/>\nvirtual\u00a0void\u00a0operator()()\u00a0=\u00a00;<br \/>\n};<\/p>\n<p>\/\/ using an action (given AbstractAction&amp; action)<br \/>\naction();<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u6837\uff0c\u6211\u4eec\u7684\u7c7b\u770b\u8d77\u6765\u5f88\u50cf\u51fd\u6570\u3002\u524d\u9762\u4ee3\u7801\u4e2d\u7684 for_each \u4e5f\u5f97\u505a\u76f8\u5e94\u7684\u6539\u53d8\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ previously<br \/>\nstd::for_each(\u00a0actionList_.begin(),<br \/>\nactionList_.end(),<br \/>\nboost::bind(&amp;AbstractAction::execute,\u00a0_1)\u00a0);<br \/>\n\/\/ now<br \/>\nstd::for_each(\u00a0actionList_.begin(),<br \/>\nactionList_.end(),<br \/>\nboost::bind(&amp;AbstractAction::operator(),\u00a0_1)\u00a0);<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u7684 Button::clicked() \u51fd\u6570\u7684\u5b9e\u73b0\u6709\u4e86\u66f4\u591a\u7684\u9009\u62e9\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ previously<br \/>\naction_-&gt;execute();<\/p>\n<p>\/\/ option 1: use the dereferenced pointer like a function<br \/>\n(*action_)();<\/p>\n<p>\/\/ option 2: call the function by its new name<br \/>\naction_-&gt;operator()();<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u770b\u8d77\u6765\u5f88\u9ebb\u70e6\uff0c\u503c\u5f97\u8fd9\u6837\u505a\u5417\uff1f<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u6765\u8bd5\u7740\u89e3\u91ca\u4e00\u4e0b\u4fe1\u53f7\u548c\u69fd\u7684\u76ee\u7684\u3002\u770b\u4e0a\u53bb\uff0c\u91cd\u5199 operator() \u8fd0\u7b97\u7b26\u6709\u4e9b\u8fc7\u5206\uff0c\u5e76\u4e0d\u503c\u5f97\u6211\u4eec\u53bb\u8fd9\u4e48\u505a\u3002\u4f46\u662f\uff0c\u8981\u77e5\u9053\uff0c\u5728\u67d0\u4e9b\u95ee\u9898\u4e0a\uff0c\u4f60\u63d0\u4f9b\u7684\u53ef\u7528\u7684\u89e3\u51b3\u65b9\u6848\u8d8a\u591a\uff0c\u8d8a\u6709\u5229\u4e8e\u6211\u4eec\u7f16\u5199\u66f4\u7b80\u6d01\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u5bf9\u4e00\u4e9b\u7c7b\u8fdb\u884c\u89c4\u8303\uff0c\u5c31\u50cf\u6211\u4eec\u8981\u8ba9\u51fd\u6570\u5bf9\u8c61\u770b\u8d77\u6765\u66f4\u50cf\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8ba9\u5b83\u4eec\u5728\u67d0\u4e9b\u73af\u5883\u4e0b\u66f4\u9002\u5408\u91cd\u7528\u3002\u5728\u4f7f\u7528\u6a21\u677f\u7f16\u7a0b\uff0c\u6216\u8005\u662f Boost.Function\uff0cbind \u6216\u8005\u662f\u6a21\u677f\u5143\u7f16\u7a0b\u7684\u60c5\u5f62\u4e0b\uff0c\u8fd9\u4e00\u70b9\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n<p>\u8fd9\u662f\u5bf9\u65e0\u9700\u66f4\u591a\u7279\u5316\u5efa\u7acb\u4fe1\u53f7\u69fd\u8fde\u63a5\u91cd\u8981\u6027\u7684\u90e8\u5206\u56de\u7b54\u3002\u6a21\u677f\u5c31\u63d0\u4f9b\u4e86\u8fd9\u6837\u4e00\u79cd\u673a\u5236\uff0c\u8ba9\u6dfb\u52a0\u4e86\u7279\u5316\u53c2\u6570\u7684\u4ee3\u7801\u5e76\u4e0d\u90a3\u4e48\u96be\u5730\u88ab\u7279\u5316\uff0c\u6b63\u5982\u6211\u4eec\u7684\u51fd\u6570\u5bf9\u8c61\u90a3\u6837\u3002\u800c\u6a21\u677f\u7684\u7279\u5316\u5bf9\u4e8e\u4f7f\u7528\u8005\u800c\u8a00\u662f\u900f\u660e\u7684\u3002<\/p>\n<p>\u677e\u8026\u5408<\/p>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u56de\u987e\u4e00\u4e0b\u6211\u4eec\u4e4b\u524d\u7684\u79cd\u79cd\u505a\u6cd5\u3002<\/p>\n<p>\u6211\u4eec\u6267\u7740\u5730\u5bfb\u6c42\u4e00\u79cd\u80fd\u591f\u5728\u540c\u4e00\u4e2a\u5730\u65b9\u8c03\u7528\u4e0d\u540c\u51fd\u6570\u7684\u65b9\u6cd5\uff0c\u8fd9\u5b9e\u9645\u4e0a\u662f C++ \u5185\u7f6e\u7684\u529f\u80fd\u4e4b\u4e00\uff0c\u901a\u8fc7 virtual \u5173\u952e\u5b57\uff0c\u5f53\u7136\uff0c\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u6307\u9488\u5b9e\u73b0\u3002\u5f53\u6211\u4eec\u9700\u8981\u8c03\u7528\u7684\u51fd\u6570\u6ca1\u6709\u4e00\u4e2a\u5408\u9002\u7684\u7b7e\u540d\uff0c\u6211\u4eec\u5c06\u5b83\u5305\u88c5\u6210\u4e00\u4e2a\u7c7b\u3002\u6211\u4eec\u5df2\u7ecf\u6f14\u793a\u4e86\u5982\u4f55\u5728\u540c\u4e00\u5730\u65b9\u8c03\u7528\u591a\u4e2a\u51fd\u6570\uff0c\u81f3\u5c11\u6211\u4eec\u77e5\u9053\u6709\u8fd9\u4e48\u4e00\u79cd\u65b9\u6cd5\uff08\u4f46\u8fd9\u5e76\u4e0d\u662f\u5728\u7f16\u8bd1\u671f\u5b8c\u6210\u7684\uff09\u3002\u6211\u4eec\u5b9e\u73b0\u4e86\u8ba9\u201c\u4fe1\u53f7\u53d1\u9001\u201d\u80fd\u591f\u88ab\u82e5\u5e72\u4e2a\u4e0d\u540c\u7684\u201c\u69fd\u201d\u76d1\u542c\u3002<\/p>\n<p>\u4e0d\u8fc7\uff0c\u6211\u4eec\u7684\u7cfb\u7edf\u7684\u786e\u6ca1\u6709\u4ec0\u4e48\u975e\u5e38\u4e0e\u4f17\u4e0d\u540c\u7684\u5730\u65b9\u3002\u6211\u4eec\u6765\u4ed4\u7ec6\u5ba1\u6838\u4e00\u4e0b\u6211\u4eec\u7684\u7cfb\u7edf\uff0c\u5b83\u771f\u6b63\u4e0d\u540c\u7684\u662f\uff1a<\/p>\n<ul>\n<li>\u5b9a\u4e49\u4e86\u4e24\u4e2a\u4e0d\u540c\u7684\u672f\u8bed\uff1a\u201c\u4fe1\u53f7\u201d\u548c\u201c\u69fd\u201d\uff1b<\/li>\n<li>\u5728\u4e00\u4e2a\u8c03\u7528\u70b9\uff08\u4fe1\u53f7\uff09\u4e0e\u96f6\u4e2a\u6216\u8005\u591a\u4e2a\u56de\u8c03\uff08\u69fd\uff09\u76f8\u8fde\uff1b<\/li>\n<li>\u8fde\u63a5\u7684\u7126\u70b9\u4ece\u63d0\u4f9b\u8005\u5904\u79fb\u5f00\uff0c\u66f4\u591a\u5730\u8f6c\u5411\u6d88\u8d39\u8005\uff08\u4e5f\u5c31\u662f\u8bf4\uff0cButton \u5e76\u4e0d\u9700\u8981\u77e5\u9053\u5982\u4f55\u505a\u662f\u6b63\u786e\u7684\uff0c\u800c\u662f\u7531\u56de\u8c03\u51fd\u6570\u53bb\u544a\u77e5 Button\uff0c\u4f60\u9700\u8981\u8c03\u7528\u6211\uff09\u3002<\/li>\n<\/ul>\n<p>\u4f46\u662f\uff0c\u8fd9\u6837\u7684\u7cfb\u7edf\u8fd8\u8fdc\u8fbe\u4e0d\u5230\u677e\u8026\u5408\u7684\u5173\u7cfb\u3002Button \u7c7b\u5e76\u4e0d\u9700\u8981\u77e5\u9053 Page \u7c7b\u3002\u677e\u8026\u5408\u610f\u5473\u7740\u66f4\u5c11\u7684\u4f9d\u8d56\uff1b\u4f9d\u8d56\u8d8a\u5c11\uff0c\u7ec4\u4ef6\u7684\u53ef\u91cd\u7528\u6027\u4e5f\u5c31\u8d8a\u9ad8\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u80af\u5b9a\u9700\u8981\u6709\u7ec4\u4ef6\u540c\u65f6\u77e5\u9053 Button \u548c Page\uff0c\u4ece\u800c\u5b8c\u6210\u5bf9\u5b83\u4eec\u7684\u8fde\u63a5\u3002\u73b0\u5728\uff0c\u6211\u4eec\u7684\u8fde\u63a5\u5b9e\u9645\u662f\u7528\u4ee3\u7801\u63cf\u8ff0\u7684\uff0c\u5982\u679c\u6211\u4eec\u4e0d\u7528\u4ee3\u7801\uff0c\u800c\u7528\u6570\u636e\u63cf\u8ff0\u8fde\u63a5\u5462\uff1f\u8fd9\u4e48\u4e00\u6765\uff0c\u6211\u4eec\u5c31\u6709\u4e86\u677e\u8026\u5408\u7684\u7c7b\uff0c\u4ece\u800c\u63d0\u9ad8\u4e8c\u8005\u7684\u53ef\u91cd\u7528\u6027\u3002<\/p>\n<p>\u65b0\u7684\u8fde\u63a5\u6a21\u5f0f<\/p>\n<p>\u4ec0\u4e48\u6837\u7684\u8fde\u63a5\u6a21\u5f0f\u624d\u7b97\u662f\u975e\u4ee3\u7801\u63cf\u8ff0\u5462\uff1f\u5047\u5982\u4ec5\u4ec5\u53ea\u6709\u4e00\u79cd\u4fe1\u53f7\u69fd\u7684\u7b7e\u540d\uff0c\u4f8b\u5982 void (*signature)()\uff0c\u8fd9\u5e76\u4e0d\u80fd\u5b9e\u73b0\u3002\u4f7f\u7528\u6563\u5217\u8868\uff0c\u5c06\u4fe1\u53f7\u7684\u540d\u5b57\u6620\u5c04\u5230\u5339\u914d\u7684\u8fde\u63a5\u51fd\u6570\uff0c\u5c06\u69fd\u7684\u540d\u5b57\u6620\u5c04\u5230\u5339\u914d\u7684\u51fd\u6570\u6307\u9488\uff0c\u8fd9\u6837\u7684\u4e00\u5bf9\u5b57\u7b26\u4e32\u5373\u53ef\u5efa\u7acb\u4e00\u4e2a\u8fde\u63a5\u3002<\/p>\n<p>\u7136\u800c\uff0c\u8fd9\u79cd\u5b9e\u73b0\u5176\u5b9e\u5305\u542b\u4e00\u4e9b\u201c\u63e1\u624b\u201d\u534f\u8bae\u3002\u6211\u4eec\u7684\u786e\u5e0c\u671b\u5177\u6709\u591a\u79cd\u4fe1\u53f7\u69fd\u7684\u7b7e\u540d\u3002\u5728\u4fe1\u53f7\u69fd\u7684\u7b80\u77ed\u56de\u7b54\u4e2d\u6211\u4eec\u63d0\u5230\uff0c\u4fe1\u53f7\u53ef\u4ee5\u643a\u5e26\u9644\u52a0\u4fe1\u606f\u3002\u8fd9\u8981\u6c42\u4fe1\u53f7\u5177\u6709\u53c2\u6570\u3002\u6211\u4eec\u5e76\u6ca1\u6709\u5904\u7406\u6210\u5458\u51fd\u6570\u4e0e\u975e\u6210\u5458\u51fd\u6570\u7684\u4e0d\u540c\uff0c\u8fd9\u53c8\u662f\u4e00\u79cd\u6f5c\u5728\u7684\u51fd\u6570\u7b7e\u540d\u7684\u4e0d\u540c\u3002\u6211\u4eec\u8fd8\u6ca1\u6709\u51b3\u5b9a\uff0c\u6211\u4eec\u662f\u76f4\u63a5\u5c06\u4fe1\u53f7\u8fde\u63a5\u5230\u69fd\u51fd\u6570\u4e0a\uff0c\u8fd8\u662f\u8fde\u63a5\u5230\u4e00\u4e2a\u5305\u88c5\u5668\u4e0a\u3002\u5982\u679c\u662f\u5305\u88c5\u5668\uff0c\u8fd9\u4e2a\u5305\u88c5\u5668\u9700\u8981\u5df2\u7ecf\u5b58\u5728\u5462\uff0c\u8fd8\u662f\u6211\u4eec\u5728\u9700\u8981\u65f6\u81ea\u52a8\u521b\u5efa\u5462\uff1f\u867d\u7136\u5e95\u5c42\u601d\u60f3\u5f88\u7b80\u5355\uff0c\u4f46\u662f\uff0c\u771f\u6b63\u7684\u5b9e\u73b0\u8fd8\u9700\u8981\u5f88\u597d\u7684\u52aa\u529b\u624d\u884c\u3002\u4f3c\u4e4e\u901a\u8fc7\u7c7b\u540d\u80fd\u591f\u521b\u5efa\u5bf9\u8c61\u662f\u4e00\u79cd\u4e0d\u9519\u7684\u60f3\u6cd5\uff0c\u8fd9\u53d6\u51b3\u4e8e\u4f60\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u6709\u65f6\u5019\u751a\u81f3\u53d6\u51b3\u4e8e\u4f60\u6709\u6ca1\u6709\u80fd\u529b\u505a\u51fa\u8fd9\u79cd\u5b9e\u73b0\u3002\u5c06\u4fe1\u53f7\u548c\u69fd\u653e\u5165\u6563\u5217\u8868\u9700\u8981\u4e00\u79cd\u6ce8\u518c\u673a\u5236\u3002\u4e00\u65e6\u6709\u4e86\u8fd9\u4e48\u4e00\u79cd\u7cfb\u7edf\uff0c\u524d\u9762\u6240\u8bf4\u7684\u201c\u6709\u592a\u591a\u7c7b\u4e86\u201d\u7684\u95ee\u9898\u5c31\u5f97\u4ee5\u89e3\u51b3\u4e86\u3002\u4f60\u6240\u9700\u8981\u505a\u7684\u5c31\u662f\u7ef4\u62a4\u8fd9\u4e2a\u6563\u5217\u8868\u7684\u952e\u503c\uff0c\u5e76\u4e14\u5728\u9700\u8981\u7684\u65f6\u5019\u5b9e\u4f8b\u5316\u7c7b\u3002<\/p>\n<p>\u7ed9\u4fe1\u53f7\u69fd\u6dfb\u52a0\u8fd9\u6837\u7684\u80fd\u529b\u5c06\u6bd4\u6211\u4eec\u524d\u9762\u6240\u505a\u7684\u6240\u6709\u5de5\u4f5c\u90fd\u56f0\u96be\u5f97\u591a\u3002\u5728\u7531\u952e\u503c\u8fdb\u884c\u8fde\u63a5\u65f6\uff0c\u591a\u6570\u5b9e\u73b0\u90fd\u4f1a\u9009\u62e9\u653e\u5f03\u7f16\u8bd1\u671f\u7c7b\u578b\u5b89\u5168\u68c0\u67e5\uff0c\u4ee5\u6ee1\u8db3\u4fe1\u53f7\u548c\u69fd\u7684\u517c\u5bb9\u3002\u8fd9\u6837\u7684\u7cfb\u7edf\u4ee3\u4ef7\u66f4\u9ad8\uff0c\u4f46\u662f\u5176\u5e94\u7528\u4e5f\u8fdc\u8fdc\u9ad8\u4e8e\u81ea\u52a8\u4fe1\u53f7\u69fd\u8fde\u63a5\u3002\u8fd9\u6837\u7684\u7cfb\u7edf\u5141\u8bb8\u5b9e\u4f8b\u5316\u5916\u90e8\u7684\u7c7b\uff0c\u6bd4\u5982 Button \u4ee5\u53ca\u5b83\u7684\u8fde\u63a5\u3002\u6240\u4ee5\uff0c\u8fd9\u6837\u7684\u7cfb\u7edf\u6709\u5f88\u5f3a\u5927\u7684\u80fd\u529b\uff0c\u5b83\u80fd\u591f\u5b8c\u6210\u4e00\u4e2a\u7c7b\u7684\u88c5\u914d\u3001\u8fde\u63a5\uff0c\u5e76\u6700\u7ec8\u5b8c\u6210\u5b9e\u4f8b\u5316\u64cd\u4f5c\uff0c\u6bd4\u5982\u76f4\u63a5\u4ece\u8d44\u6e90\u63cf\u8ff0\u6587\u4ef6\u4e2d\u5bfc\u51fa\u7684\u4e00\u4e2a\u5bf9\u8bdd\u6846\u3002\u65e2\u7136\u5b83\u80fd\u591f\u51ed\u501f\u540d\u5b57\u4f7f\u51fd\u6570\u53ef\u7528\uff0c\u8fd9\u5c31\u662f\u4e00\u79cd\u811a\u672c\u80fd\u529b\u3002\u5982\u679c\u4f60\u9700\u8981\u4e0a\u9762\u6240\u8bf4\u7684\u79cd\u79cd\u7279\u6027\uff0c\u90a3\u4e48\uff0c\u5b8c\u6210\u8fd9\u4e48\u4e00\u5957\u7cfb\u7edf\u7edd\u5bf9\u662f\u503c\u5f97\u7684\uff0c\u4f60\u7684\u4fe1\u53f7\u69fd\u7cfb\u7edf\u4e5f\u4f1a\u4ece\u4e2d\u53d7\u76ca\uff0c\u7531\u6570\u636e\u53bb\u5b8c\u6210\u4fe1\u53f7\u69fd\u7684\u8fde\u63a5\u3002<\/p>\n<p>\u5bf9\u4e8e\u4e0d\u9700\u8981\u8fd9\u79cd\u80fd\u529b\u7684\u5b9e\u73b0\u5219\u4f1a\u5ffd\u7565\u8fd9\u90e8\u5206\u7279\u6027\u3002\u4ece\u8fd9\u70b9\u770b\uff0c\u8fd9\u79cd\u5b9e\u73b0\u5c31\u662f\u201c\u8f7b\u91cf\u7ea7\u201d\u7684\u3002\u5bf9\u4e8e\u4e00\u4e2a\u9700\u8981\u8fd9\u4e9b\u7279\u6027\u7684\u5e93\u800c\u8a00\uff0c\u5b8c\u6574\u5730\u5b9e\u73b0\u51fa\u6765\u5c31\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u5b9e\u73b0\u3002\u8fd9\u4e5f\u662f\u533a\u522b\u8fd9\u4e9b\u5b9e\u73b0\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002<\/p>\n<p><a href=\"http:\/\/blog.chinaunix.net\/uid-14827902-id-2784492.html\" target=\"_blank\" rel=\"nofollow noopener\">\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\uff08\u4e09\uff09<\/a><\/p>\n<div>\n<p>\u4fe1\u53f7\u69fd\u7684\u5b9e\u73b0\u5b9e\u4f8b\u2014\u2014 Qt \u548c Boost<\/p>\n<p>Qt \u7684\u4fe1\u53f7\u69fd\u548c Boost.Signals \u7531\u4e8e\u6709\u7740\u622a\u7136\u4e0d\u540c\u7684\u8bbe\u8ba1\u76ee\u6807\uff0c\u56e0\u6b64\u4e8c\u8005\u7684\u5b9e\u73b0\u3001\u5f3a\u5ea6\u4e5f\u5341\u5206\u4e0d\u540c\u3002\u5c06\u4e8c\u8005\u6df7\u5408\u5728\u4e00\u8d77\u4f7f\u7528\u4e5f\u4e0d\u662f\u4e0d\u53ef\u80fd\u7684\uff0c\u6211\u4eec\u5c06\u5728\u672c\u7cfb\u7edf\u7684\u6700\u540e\u4e00\u90e8\u5206\u6765\u8ba8\u8bba\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u4f7f\u7528\u4fe1\u53f7\u69fd<\/p>\n<p>\u4fe1\u53f7\u69fd\u662f\u4f1f\u5927\u7684\u5de5\u5177\uff0c\u4f46\u662f\u5982\u4f55\u80fd\u66f4\u597d\u7684\u4f7f\u7528\u5b83\u4eec\uff1f\u76f8\u6bd4\u4e8e\u76f4\u63a5\u51fd\u6570\u8c03\u7528\uff0c\u6709\u4e09\u70b9\u503c\u5f97\u6211\u4eec\u7684\u6ce8\u610f\u3002\u4e00\u4e2a\u4fe1\u53f7\u69fd\u7684\u8c03\u7528\uff1a<\/p>\n<ul>\n<li>\u6216\u8bb8\u4f1a\u6bd4\u76f4\u63a5\u51fd\u6570\u8c03\u7528\u8017\u8d39\u66f4\u591a\u7684\u65f6\u95f4\/\u7a7a\u95f4\uff1b<\/li>\n<li>\u53ef\u80fd\u4e0d\u80fd\u4f7f\u7528 inline\uff1b<\/li>\n<li>\u5bf9\u4e8e\u4ee3\u7801\u9605\u8bfb\u8005\u6765\u8bf4\u53ef\u80fd\u5e76\u4e0d\u53cb\u597d\u3002<\/li>\n<\/ul>\n<p>\u4f7f\u7528\u4fe1\u53f7\u69fd\u8fdb\u884c\u89e3\u8026\uff0c\u6211\u4eec\u83b7\u5f97\u7684\u6700\u5927\u7684\u597d\u5904\u662f\uff0c\u8fde\u63a5\u4e24\u7aef\u7684\u5bf9\u8c61\u4e0d\u9700\u8981\u77e5\u9053\u5bf9\u65b9\u7684\u4efb\u4f55\u4fe1\u606f\u3002Button \u540c\u52a8\u4f5c\u7684\u8fde\u63a5\u662f\u4e00\u4e2a\u5f88\u5178\u578b\u7684\u6848\u4f8b\u3002\u4f8b\u5982\u5982\u4e0b\u4fe1\u606f\uff1a<\/p>\n<\/div>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>class\u00a0Elevator<br \/>\n{<br \/>\npublic:<br \/>\nenum\u00a0Direction\u00a0{\u00a0DownDirection=-1,\u00a0NoDirection=0,\u00a0UpDirection=1\u00a0};<br \/>\nenum\u00a0State\u00a0{\u00a0IdleState,\u00a0LoadingState,\u00a0MovingState\u00a0};<br \/>\n\/\/ ...<br \/>\n\/\/ signals:<br \/>\nvoid\u00a0floorChanged(\u00a0int\u00a0newFloor\u00a0);<br \/>\nvoid\u00a0stateChanged(\u00a0State newState\u00a0);<br \/>\nvoid\u00a0directionChanged(\u00a0Direction newDirection\u00a0);<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Elevator \u7c7b\uff0c\u4e5f\u5c31\u662f\u7535\u68af\uff0c\u4e0d\u9700\u8981\u77e5\u9053\u6709\u591a\u5c11\u663e\u793a\u5668\u6b63\u5728\u76d1\u542c\u5b83\u7684\u4fe1\u53f7\uff0c\u4e5f\u4e0d\u9700\u8981\u77e5\u9053\u8fd9\u4e9b\u663e\u793a\u5668\u7684\u4efb\u4f55\u4fe1\u606f\u3002\u6bcf\u4e00\u5c42\u53ef\u80fd\u6709\u4e00\u4e2a\u5c4f\u5e55\u548c\u4e00\u7ec4\u706f\uff0c\u7528\u4e8e\u663e\u793a\u7535\u68af\u7684\u5f53\u524d\u4f4d\u7f6e\u548c\u65b9\u5411\uff0c\u53e6\u5916\u4e00\u4e9b\u8fdc\u7a0b\u64cd\u63a7\u7684\u9762\u677f\u4e5f\u4f1a\u663e\u793a\u51fa\u540c\u6837\u7684\u4fe1\u606f\u3002\u7535\u68af\u5e76\u4e0d\u5173\u5fc3\u8fd9\u4e9b\u4e1c\u897f\u3002\u5f53\u5b83\u7a7f\u8fc7\uff08\u6216\u8005\u505c\u5728\uff09\u67d0\u4e00\u5c42\u7684\u65f6\u5019\uff0c\u5b83\u4f1a\u53d1\u51fa\u4e00\u4e2a floorChanged(int) \u4fe1\u53f7\u3002\u6216\u8bb8\uff0c\u4ea4\u901a\u4fe1\u53f7\u706f\u662f\u66f4\u5408\u9002\u7684\u4e00\u4e2a\u4f8b\u5b50\u3002<\/p>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\uff0c\u5176\u4e2d\u6bcf\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\u90fd\u662f\u901a\u8fc7\u4fe1\u53f7\u6765\u89e6\u53d1\u7684\u3002\u8fd9\u5728\u6280\u672f\u4e0a\u8bf4\u662f\u5b8c\u5168\u6ca1\u6709\u95ee\u9898\u7684\uff0c\u7136\u800c\u5374\u662f\u4e0d\u5927\u53ef\u884c\u7684\uff0c\u56e0\u4e3a\u4fe1\u53f7\u69fd\u7684\u4f7f\u7528\u65e0\u7591\u4f1a\u4e27\u5931\u4e00\u90e8\u5206\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u7cfb\u7edf\u6027\u80fd\u3002\u5982\u4f55\u5728\u8fd9\u5176\u4e2d\u505a\u51fa\u5e73\u8861\uff0c\u4e5f\u662f\u4f60\u9700\u8981\u8003\u8651\u7684\u5f88\u91cd\u8981\u7684\u4e00\u70b9\u3002<\/p>\n<p>Qt \u65b9\u5f0f<\/p>\n<p>\u4e86\u89e3 Qt \u4fe1\u53f7\u69fd\u6700\u597d\u7684\u83ab\u8fc7\u4e8e Qt \u7684\u6587\u6863\u3002\u4e0d\u8fc7\uff0c\u8fd9\u91cc\u6211\u4eec\u4ece\u4e00\u4e2a\u5c0f\u4f8b\u5b50\u6765\u4e86\u89e3\u4fe1\u53f7\u69fd\u7684 Qt \u65b9\u5f0f\u7684\u4f7f\u7528\u3002<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ Qt Signals and Slots<\/p>\n<p>class\u00a0Button\u00a0:\u00a0public\u00a0QObject<br \/>\n{<br \/>\nQ_OBJECT<br \/>\nQ_SIGNALS:<br \/>\nvoid\u00a0clicked();<br \/>\n};<\/p>\n<p>class\u00a0Page\u00a0:\u00a0public\u00a0QObject<br \/>\n{<br \/>\nQ_OBJECT<br \/>\npublic\u00a0Q_SLOTS:<br \/>\nvoid\u00a0reload();<br \/>\n};<\/p>\n<p>\/\/ given pointers to an actual Button and Page:<br \/>\nconnect(button,\u00a0SIGNAL(clicked()),\u00a0page,\u00a0SLOT(reload()));<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Boost.Signals \u65b9\u5f0f<\/p>\n<p>\u4e86\u89e3 Boost.Signals \u7684\u6700\u597d\u65b9\u5f0f\u540c\u6837\u662f Boost \u7684\u6587\u6863\u3002\u8fd9\u91cc\uff0c\u6211\u4eec\u8fd8\u662f\u5148\u4ece\u4ee3\u7801\u7684\u89d2\u5ea6\u4e86\u89e3\u4e00\u4e0b\u5b83\u7684\u4f7f\u7528\u3002<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ Boost.Signals<\/p>\n<p>class\u00a0Button<br \/>\n{<br \/>\npublic:<br \/>\nboost::signal&lt;\u00a0void()\u00a0&gt;\u00a0clicked;<br \/>\n};<\/p>\n<p>class\u00a0Page<br \/>\n{<br \/>\npublic:<br \/>\nvoid\u00a0reload();<br \/>\n};<\/p>\n<p>\/\/ given pointers to an actual Button and Page:<br \/>\nbutton-&gt;clicked.connect(\u00a0boost::bind(&amp;Page::reload,\u00a0page)\u00a0);<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5bf9\u6bd4<\/p>\n<p>\u6216\u8bb8\u4f60\u5df2\u7ecf\u6ce8\u610f\u5230\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u65e0\u8bba\u662f Qt \u7684\u5b9e\u73b0\u65b9\u5f0f\u8fd8\u662f Boost \u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u9664\u4e86\u5fc5\u987b\u7684 Button \u548c Page \u4e24\u4e2a\u7c7b\u4e4b\u5916\uff0c\u90fd\u4e0d\u9700\u8981\u989d\u5916\u7684\u7c7b\u3002\u4e24\u79cd\u5b9e\u73b0\u90fd\u89e3\u51b3\u4e86\u7c7b\u7206\u70b8\u7684\u95ee\u9898\u3002\u4e0b\u9762\u8ba9\u6211\u4eec\u5bf9\u7167\u7740\u6765\u770b\u4e00\u4e0b\u6211\u4eec\u524d\u9762\u7684\u5206\u6790\u3002\u73b0\u5728\u6211\u4eec\u6709\uff1a<\/p>\n<ul>\n<li>\u4e24\u4e2a\u4e0d\u540c\u7684\u672f\u8bed\u4ee5\u53ca\u5404\u81ea\u7684\u52a8\u4f5c\uff1a\u4fe1\u53f7\u548c\u69fd\uff1b<\/li>\n<li>\u5728\u4e00\u4e2a\u5730\u65b9\uff08\u4fe1\u53f7\uff09\u53ef\u4ee5\u8fde\u63a5\u96f6\u4e2a\u6216\u8005\u591a\u4e2a\u56de\u8c03\u51fd\u6570\uff08\u69fd\uff09\uff0c\u540c\u65f6\u4e5f\u662f\u591a\u5bf9\u591a\u7684\uff1b<\/li>\n<li>\u7126\u70b9\u5728\u4e8e\u8fde\u63a5\u672c\u8eab\uff0c\u800c\u4e0d\u662f\u63d0\u4f9b\u8005\u6216\u8005\u6d88\u8d39\u8005\uff1b<\/li>\n<li>\u4e0d\u9700\u8981\u624b\u5de5\u4e3a\u4e86\u4e00\u4e2a\u8fde\u63a5\u521b\u5efa\u65b0\u7684\u7c7b\uff1b<\/li>\n<li>\u8fde\u63a5\u4ecd\u65e7\u662f\u7c7b\u578b\u5b89\u5168\u7684\u3002<\/li>\n<\/ul>\n<div>\u8fd9\u4e94\u70b9\u662f\u4fe1\u53f7\u69fd\u7cfb\u7edf\u7684\u6838\u5fc3\uff0cQt \u548c boost \u90fd\u62e5\u6709\u8fd9\u4e9b\u7279\u6027\u3002\u4e0b\u9762\u5219\u662f\u4e8c\u8005\u7684\u4e0d\u540c\u4e4b\u5904\uff1a<\/div>\n<div align=\"center\">\n<table border=\"1\" width=\"522\" cellspacing=\"1\" cellpadding=\"1\" align=\"center\">\n<tbody>\n<tr>\n<td>\u00a0Boost.Signals<\/td>\n<td>\u00a0Qt Signals \u548c Slots<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u4e00\u4e2a\u4fe1\u53f7\u5c31\u662f\u4e00\u4e2a\u5bf9\u8c61<\/td>\n<td>\u00a0\u4fe1\u53f7\u53ea\u80fd\u662f\u6210\u5458\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u53d1\u51fa\u4fe1\u53f7\u7c7b\u4f3c\u4e8e\u51fd\u6570\u8c03\u7528<\/td>\n<td>\u00a0\u53d1\u51fa\u4fe1\u53f7\u7c7b\u4f3c\u4e8e\u51fd\u6570\u8c03\u7528\uff0cQt \u63d0\u4f9b\u4e86\u4e00\u4e2a emit \u5173\u952e\u5b57\u6765\u5b8c\u6210\u8fd9\u4e2a\u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>\u4fe1\u53f7\u53ef\u4ee5\u662f\u5168\u5c40\u7684\u3001\u5c40\u90e8\u7684\u6216\u8005\u662f\u6210\u5458\u5bf9\u8c61<\/td>\n<td>\u00a0\u4fe1\u53f7\u53ea\u80fd\u662f\u6210\u5458\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u4efb\u4f55\u80fd\u591f\u8bbf\u95ee\u5230\u4fe1\u53f7\u5bf9\u8c61\u7684\u4ee3\u7801\u90fd\u53ef\u4ee5\u53d1\u51fa\u4fe1\u53f7<\/td>\n<td>\u00a0\u53ea\u6709\u4fe1\u53f7\u7684\u62e5\u6709\u8005\u624d\u80fd\u53d1\u51fa\u4fe1\u53f7<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u69fd\u662f\u4efb\u4f55\u53ef\u88ab\u8c03\u7528\u7684\u51fd\u6570\u6216\u8005\u51fd\u6570\u5bf9\u8c61<\/td>\n<td>\u00a0\u69fd\u662f\u7ecf\u8fc7\u7279\u522b\u8bbe\u8ba1\u7684\u6210\u5458\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u53ef\u4ee5\u6709\u8fd4\u56de\u503c\uff0c\u8fd4\u56de\u503c\u53ef\u4ee5\u5728\u591a\u4e2a\u69fd\u4e2d\u4f7f\u7528<\/td>\n<td>\u00a0\u6ca1\u6709\u8fd4\u56de\u503c<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u540c\u6b65\u7684<\/td>\n<td>\u00a0\u540c\u6b65\u7684\u6216\u8005\u961f\u5217\u7684<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u975e\u7ebf\u7a0b\u5b89\u5168<\/td>\n<td>\u00a0\u7ebf\u7a0b\u5b89\u5168\uff0c\u53ef\u4ee5\u8de8\u7ebf\u7a0b\u4f7f\u7528<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u5f53\u4e14\u4ec5\u5f53\u69fd\u662f\u53ef\u8ffd\u8e2a\u7684\u65f6\u5019\uff0c\u69fd\u88ab\u9500\u6bc1\u65f6\uff0c\u8fde\u63a5\u81ea\u52a8\u65ad\u5f00<\/td>\n<td>\u00a0\u69fd\u88ab\u9500\u6bc1\u65f6\uff0c\u8fde\u63a5\u90fd\u4f1a\u81ea\u52a8\u65ad\u5f00\uff08\u56e0\u4e3a\u6240\u6709\u69fd\u90fd\u662f\u53ef\u8ffd\u8e2a\u7684\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u7c7b\u578b\u5b89\u5168\uff08\u7f16\u8bd1\u5668\u68c0\u67e5\uff09<\/td>\n<td>\u00a0\u7c7b\u578b\u5b89\u5168\uff08\u8fd0\u884c\u671f\u68c0\u67e5\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u53c2\u6570\u5217\u8868\u5fc5\u987b\u5b8c\u5168\u4e00\u81f4<\/td>\n<td>\u00a0\u69fd\u53ef\u4ee5\u5ffd\u7565\u4fe1\u53f7\u4e2d\u591a\u4f59\u7684\u53c2\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u4fe1\u53f7\u3001\u69fd\u53ef\u4ee5\u662f\u6a21\u677f<\/td>\n<td>\u00a0\u4fe1\u53f7\u3001\u69fd\u4e0d\u80fd\u662f\u6a21\u677f<\/td>\n<\/tr>\n<tr>\n<td>\u00a0C++ \u76f4\u63a5\u5b9e\u73b0<\/td>\n<td>\u00a0\u00a0\u901a\u8fc7\u7531 moc \u751f\u6210\u7684\u5143\u5bf9\u8c61\u5b9e\u73b0\uff08moc \u4ee5\u53ca\u5143\u5bf9\u8c61\u7cfb\u7edf\u90fd\u662f C++ \u76f4\u63a5\u5b9e\u73b0\u7684\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u00a0\u00a0\u6ca1\u6709\u5185\u7701\u673a\u5236<\/td>\n<td>\u00a0\u53ef\u4ee5\u901a\u8fc7\u5185\u7701\u53d1\u73b0\u00a0\u53ef\u4ee5\u901a\u8fc7\u5143\u5bf9\u8c61\u8c03\u7528<\/p>\n<p>\u8fde\u63a5\u53ef\u4ee5\u4ece\u8d44\u6e90\u6587\u4ef6\u4e2d\u81ea\u52a8\u63a8\u65ad\u51fa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u6700\u91cd\u8981\u7684\u662f\uff0cQt \u7684\u4fe1\u53f7\u69fd\u673a\u5236\u5df2\u7ecf\u6df1\u6df1\u5730\u690d\u5165\u5230\u6846\u67b6\u4e4b\u4e2d\uff0c\u6210\u4e3a\u4e0d\u53ef\u5206\u5272\u7684\u4e00\u90e8\u5206\u3002\u5b83\u4eec\u53ef\u4ee5\u4f7f\u7528 Qt \u4e13\u95e8\u7684\u5f00\u53d1\u5de5\u5177\uff0c\u4f8b\u5982 QtCreator\uff0c\u901a\u8fc7\u62d6\u62fd\u7684\u65b9\u5f0f\u5f88\u8f7b\u677e\u7684\u521b\u5efa\u3001\u5220\u9664\u3001\u4fee\u6539\u3002\u5b83\u4eec\u751a\u81f3\u53ef\u4ee5\u901a\u8fc7\u52a8\u6001\u52a0\u8f7d\u8d44\u6e90\u6587\u4ef6\uff0c\u7531\u7279\u5b9a\u547d\u540d\u7684\u5bf9\u8c61\u81ea\u52a8\u52a8\u6001\u751f\u6210\u3002\u8fd9\u4e9b\u90fd\u662f boost \u4f5c\u4e3a\u4e00\u4e2a\u901a\u7528\u5e93\u6240\u4e0d\u53ef\u80fd\u63d0\u4f9b\u7684\u3002<\/p>\n<p><a href=\"http:\/\/blog.chinaunix.net\/uid-14827902-id-2784493.html\" target=\"_blank\" rel=\"nofollow noopener\">\u6df1\u5165\u7406\u89e3\u4fe1\u53f7\u69fd\uff08\u56db\uff09<\/a><\/p>\n<p>\u5c06 Qt \u7684\u4fe1\u53f7\u69fd\u7cfb\u7edf\u4e0e Boost.Signals \u7ed3\u5408\u4f7f\u7528<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u5c06 Qt \u7684\u4fe1\u53f7\u69fd\u7cfb\u7edf\u4e0e Boost.Signals \u7ed3\u5408\u5728\u4e00\u8d77\u4f7f\u7528\u5e76\u975e\u4e0d\u53ef\u80fd\u3002\u901a\u8fc7\u524d\u9762\u7684\u9610\u8ff0\uff0c\u6211\u4eec\u90fd\u77e5\u9053\u4e86\u4e8c\u8005\u7684\u4e0d\u540c\uff0c\u81f3\u4e8e\u4e3a\u4ec0\u4e48\u8981\u5c06\u8fd9\u4e8c\u8005\u7ed3\u5408\u4f7f\u7528\uff0c\u5219\u662f\u89c1\u4ec1\u89c1\u667a\u7684\u4e86\u3002\u8fd9\u91cc\uff0c\u6211\u4eec\u7ed9\u51fa\u4e00\u79cd\u7ed3\u5408\u4f7f\u7528\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u4f46\u662f\u5e76\u4e0d\u662f\u8bf4\u6211\u4eec\u6697\u793a\u5e94\u8be5\u5c06\u5b83\u4eec\u7ed3\u5408\u4f7f\u7528\u3002\u8fd9\u5e94\u8be5\u662f\u5177\u4f53\u95ee\u9898\u5177\u4f53\u5206\u6790\u7684\u3002<\/p>\n<p>\u5c06 Qt \u7684\u4fe1\u53f7\u69fd\u7cfb\u7edf\u4e0e Boost.Signals \u7ed3\u5408\u4f7f\u7528\uff0c\u6700\u5927\u7684\u969c\u788d\u662f\uff0cQt \u4f7f\u7528\u9884\u5904\u7406\u5668\u5b9a\u4e49\u4e86\u5173\u952e\u5b57 signals\uff0cslots \u4ee5\u53ca emit\u3002\u8fd9\u4e9b\u53ef\u4ee5\u770b\u505a\u662f Qt \u5bf9 C++ \u8bed\u8a00\u7684\u6269\u5c55\u3002\u540c\u65f6\uff0cQt \u4e5f\u63d0\u4f9b\u4e86\u53e6\u5916\u4e00\u79cd\u65b9\u5f0f\uff0c\u5373\u4f7f\u7528\u5b8f\u6765\u5b9e\u73b0\u8fd9\u4e9b\u5173\u952e\u5b57\u3002\u4e3a\u4e86\u5c4f\u853d\u6389\u8fd9\u4e9b\u6269\u5c55\u7684\u5173\u952e\u5b57\uff0cQt 4.1 \u7684 pro \u6587\u4ef6\u5f15\u5165\u4e86 no_keywords \u9009\u9879\uff0c\u4ee5\u4fbf\u4f7f\u7528\u6807\u51c6 C++ \u7684\u65b9\u5f0f\uff0c\u65b9\u4fbf Qt \u4e0e\u5176\u4ed6 C++ \u540c\u65f6\u4f7f\u7528\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u6253\u5f00 no_keywords \u9009\u9879\uff0c\u6765\u5c4f\u853d\u6389\u8fd9\u4e9b\u5173\u952e\u5b57\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5b9e\u73b0\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>#\u00a0TestSignals.pro\u00a0(platform independent project\u00a0file,\u00a0input to qmake)<br \/>\n#\u00a0showing how to mix Qt Signals\u00a0and\u00a0Slots with Boost.Signals<br \/>\n#<br \/>\n#\u00a0Things you will have in your\u00a0.pro when you\u00a0try\u00a0this...<br \/>\n#<br \/>\nCONFIG\u00a0+=\u00a0no_keywords<br \/>\n#\u00a0so Qt won't #define any non-all-caps `keywords'<br \/>\nINCLUDEPATH\u00a0+=\u00a0.\u00a0\/usr\/local\/include\/boost-1_33_1\/<br \/>\n#\u00a0so we can\u00a0#include\u00a0&lt;boost\/someheader.hpp&gt;<br \/>\nmacx:LIBS\u00a0+=\u00a0\/usr\/local\/lib\/libboost_signals-1_33_1.a<br \/>\n#\u00a0...and\u00a0we need to link with the Boost.Signals library.<br \/>\n#\u00a0This\u00a0is where it lives on my Mac,<br \/>\n#\u00a0other platforms would have to add a\u00a0line\u00a0here<br \/>\n#<br \/>\n#\u00a0Things specific to my demo<br \/>\n#<br \/>\nCONFIG\u00a0-=\u00a0app_bundle<br \/>\n#\u00a0so I will build a command-line\u00a0tool instead of a Mac OS X app bundle<br \/>\nHEADERS\u00a0+=\u00a0Sender.h Receiver.h<br \/>\nSOURCES\u00a0+=\u00a0Receiver.cpp main.cpp<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8bf7\u6ce8\u610f\uff0c\u6211\u4eec\u5df2\u7ecf\u5728 pro \u6587\u4ef6\u4e2d\u6253\u5f00\u4e86 no_keywords \u9009\u9879\uff0c\u90a3\u4e48\uff0c\u7c7b\u4f3c signals \u8fd9\u6837\u7684\u5173\u952e\u5b57\u5df2\u7ecf\u4e0d\u8d77\u4f5c\u7528\u4e86\u3002\u6240\u4ee5\uff0c\u6211\u4eec\u5fc5\u987b\u5c06\u8fd9\u4e9b\u5173\u952e\u5b57\u4fee\u6539\u6210\u76f8\u5e94\u7684\u5b8f\u7684\u7248\u672c\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u9700\u8981\u5c06 signals \u6539\u4e3a Q_SIGNALS\uff0c\u5c06 slots \u6539\u4e3a Q_SLOTS \u7b49\u7b49\u3002\u8bf7\u770b\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ Sender.h<\/p>\n<p>#include\u00a0&lt;QObject&gt;<br \/>\n#include\u00a0&lt;string&gt;<br \/>\n#include\u00a0&lt;boost\/signal.hpp&gt;<br \/>\nclass\u00a0Sender\u00a0:\u00a0public\u00a0QObject<br \/>\n{<br \/>\nQ_OBJECT<br \/>\nQ_SIGNALS:\u00a0\/\/ a Qt signal<br \/>\nvoid\u00a0qtSignal(\u00a0const\u00a0std::string&amp;\u00a0);<br \/>\n\/\/ connect with<br \/>\n\/\/ QObject::connect(sender, SIGNAL(qtSignal(const std::string&amp;)), ...<br \/>\npublic:\u00a0\/\/ a Boost signal for the same signature<br \/>\nboost::signal&lt;\u00a0void\u00a0(\u00a0const\u00a0std::string&amp;\u00a0)\u00a0&gt;\u00a0boostSignal;<br \/>\n\/\/ connect with<br \/>\n\/\/ sender-&gt;boostSignal.connect(...<br \/>\npublic:\u00a0\/\/ an interface to make Sender emit its signals<br \/>\nvoid\u00a0sendBoostSignal(\u00a0const\u00a0std::string&amp;\u00a0message\u00a0)\u00a0{<br \/>\nboostSignal(message);<br \/>\n}<\/p>\n<p>void\u00a0sendQtSignal(\u00a0const\u00a0std::string&amp;\u00a0message\u00a0)\u00a0{<br \/>\nqtSignal(message);<br \/>\n}<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u73b0\u5728\u6211\u4eec\u6709\u4e86\u4e00\u4e2a\u53d1\u9001\u8005\uff0c\u4e0b\u9762\u6765\u770b\u770b\u63a5\u6536\u8005\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ Receiver.h<br \/>\n#include\u00a0&lt;QObject&gt;<br \/>\n#include\u00a0&lt;string&gt;<\/p>\n<p>class\u00a0Receiver\u00a0:\u00a0public\u00a0QObject<br \/>\n{<br \/>\nQ_OBJECT<br \/>\npublic\u00a0Q_SLOTS:<br \/>\nvoid\u00a0qtSlot(\u00a0const\u00a0std::string&amp;\u00a0message\u00a0);<br \/>\n\/\/ a Qt slot is a specially marked member function<br \/>\n\/\/ a Boost slot is any callable signature<br \/>\n};<\/p>\n<p>\/\/ Receiver.cpp<br \/>\n#include\u00a0\"Receiver.h\"<br \/>\n#include\u00a0&lt;iostream&gt;<\/p>\n<p>void\u00a0Receiver::qtSlot(\u00a0const\u00a0std::string&amp;\u00a0message\u00a0)<br \/>\n{<br \/>\nstd::cout\u00a0&lt;&lt;\u00a0message\u00a0&lt;&lt;\u00a0std::endl;<br \/>\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0b\u9762\uff0c\u6211\u4eec\u6765\u6d4b\u8bd5\u4e00\u4e0b\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ main.cpp<br \/>\n#include\u00a0&lt;boost\/bind.hpp&gt;<br \/>\n#include\u00a0\"Sender.h\"<br \/>\n#include\u00a0\"Receiver.h\"<\/p>\n<p>int\u00a0main(\u00a0int\u00a0\/*argc*\/,\u00a0char*\u00a0\/*argv*\/[]\u00a0)<br \/>\n{<br \/>\nSender*\u00a0sender\u00a0=\u00a0new\u00a0Sender;<br \/>\nReceiver*\u00a0receiver\u00a0=\u00a0new\u00a0Receiver;<\/p>\n<p>\/\/ connect the boost style signal<br \/>\nsender-&gt;boostSignal.connect(boost::bind(&amp;Receiver::qtSlot,\u00a0receiver,\u00a0_1));<br \/>\n\/\/ connect the qt style signal<br \/>\nQObject::connect(sender,\u00a0SIGNAL(qtSignal(const\u00a0std::string&amp;)),<br \/>\nreceiver,\u00a0SLOT(qtSlot(const\u00a0std::string&amp;)));<br \/>\nsender-&gt;sendBoostSignal(\"Boost says 'Hello, World!'\");<br \/>\nsender-&gt;sendQtSignal(\"Qt says 'Hello, World!'\");<br \/>\nreturn\u00a00;<br \/>\n}<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u5c06\u4f1a\u6709\u7c7b\u4f3c\u4e0b\u9762\u7684\u8f93\u51fa\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>[506]TestSignals$\u00a0.\/TestSignals<br \/>\nBoost says\u00a0'Hello, World!'<br \/>\nQt says\u00a0'Hello, World!'<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u4e24\u79cd\u5b9e\u73b0\u7684\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0cBoost.Signals \u7684\u4fe1\u53f7\uff0cboostSignal\uff0c\u662f public \u7684\uff0c\u4efb\u4f55\u5bf9\u8c61\u90fd\u53ef\u4ee5\u76f4\u63a5\u53d1\u51fa\u8fd9\u4e2a\u4fe1\u53f7\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u7684\u4ee3\u7801\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>sender-&gt;boostSignal(\"Boost says 'Hello, World!', directly\");<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ece\u800c\u7ed5\u8fc7\u6211\u4eec\u8bbe\u7f6e\u7684 sendBoostSignal() \u8fd9\u4e2a\u89e6\u53d1\u51fd\u6570\u3002\u53e6\u5916\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0cboostSignal \u5b8c\u5168\u53ef\u4ee5\u662f\u4e00\u4e2a\u5168\u5c40\u5bf9\u8c61\uff0c\u8fd9\u6837\uff0c\u4efb\u4f55\u5bf9\u8c61\u90fd\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e2a\u4fe1\u53f7\u3002\u800c\u5bf9\u4e8e Qt \u6765\u8bf4\uff0csignal \u5fc5\u987b\u662f\u4e00\u4e2a\u6210\u5458\u53d8\u91cf\uff0c\u5728\u8fd9\u91cc\uff0c\u53ea\u6709 Sender \u53ef\u4ee5\u4f7f\u7528\u6211\u4eec\u5b9a\u4e49\u7684\u4fe1\u53f7\u3002<\/p>\n<p>\u8fd9\u4e2a\u4f8b\u5b50\u867d\u7136\u7b80\u5355\uff0c\u7136\u800c\u5df2\u7ecf\u5f88\u6e05\u695a\u5730\u4e3a\u6211\u4eec\u5c55\u793a\u4e86\uff0c\u5982\u4f55\u901a\u8fc7 Qt \u53d1\u51fa\u4fe1\u53f7\u6765\u83b7\u53d6 Boost \u7684\u884c\u4e3a\u3002\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4f7f\u7528\u4e00\u4e2a\u516c\u5171\u7684 sendQtSignal() \u51fd\u6570\u53d1\u51fa Qt \u7684\u4fe1\u53f7\u3002\u7136\u800c\uff0c \u4e3a\u4e86\u4ece Boost \u7684\u4fe1\u53f7\u83b7\u53d6 Qt \u7684\u884c\u4e3a\uff0c\u6211\u4eec\u9700\u8981\u591a\u505a\u4e00\u4e9b\u5de5\u4f5c\uff1a\u9690\u85cf\u4fe1\u53f7\uff0c\u4f46\u662f\u9700\u8981\u63d0\u4f9b\u83b7\u53d6\u8fde\u63a5\u7684\u51fd\u6570\u3002\u8fd9\u6837\u770b\u4e0a\u53bb\u6709\u4e9b\u9ebb\u70e6\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>class\u00a0Sender\u00a0:\u00a0public\u00a0QObject<br \/>\n{<br \/>\n\/\/ just the changes...<br \/>\nprivate:<br \/>\n\/\/ our new public connect function will be much easier to understand<br \/>\n\/\/ if we simplify some of the type<br \/>\ntypedef\u00a0boost::signal&lt;\u00a0void\u00a0(\u00a0const\u00a0std::string&amp;\u00a0)\u00a0&gt;\u00a0signal_type;<br \/>\ntypedef\u00a0signal_type::slot_type slot_type;<br \/>\nsignal_type boostSignal;<br \/>\n\/\/ our signal object is now hidden<br \/>\npublic:<br \/>\nboost::signals::connection<br \/>\nconnectBoostSignal(\u00a0const\u00a0slot_type&amp;\u00a0slot,<br \/>\nboost::signals::connect_position pos\u00a0=\u00a0boost::signals::at_back\u00a0)\u00a0{<br \/>\nreturn\u00a0boostSignal.connect(slot,\u00a0pos);<br \/>\n}<br \/>\n};<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5e94\u8be5\u8bf4\uff0c\u8fd9\u6837\u7684\u5b9e\u73b0\u76f8\u5f53\u4e11\u964b\u3002\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u5c06 Boost \u7684\u4fe1\u53f7\u4e0e\u8fde\u63a5\u5206\u5272\u5f00\u4e86\u3002\u6211\u4eec\u5e0c\u671b\u80fd\u591f\u6709\u5982\u4e0b\u7684\u5b9e\u73b0\uff1a<\/p>\n<table border=\"1\" width=\"95%\" cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#f1f1f1\">\n<tbody>\n<tr>\n<td><code>\/\/ WARNING: no such thing as a connect_proxy<br \/>\nclass\u00a0Sender<br \/>\n{<br \/>\npublic:<br \/>\nconnect_proxy&lt;\u00a0boost::signal&lt;\u00a0void\u00a0(\u00a0const\u00a0std::string&amp;\u00a0)\u00a0&gt;\u00a0&gt;<br \/>\nsomeSignal()\u00a0{<br \/>\nreturn\u00a0someSignal_;<br \/>\n\/\/ ...automatically wrapped in the proxy<br \/>\n}<br \/>\nprivate:<br \/>\nboost::signal&lt;\u00a0void\u00a0(\u00a0const\u00a0std::string&amp;\u00a0)\u00a0&gt;\u00a0someSignal_;<br \/>\n};<br \/>\nsender-&gt;someSignal().connect(someSlot);<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6ce8\u610f\uff0c\u8fd9\u53ea\u662f\u6211\u7684\u5e0c\u671b\uff0c\u5e76\u6ca1\u6709\u505a\u51fa\u5b9e\u73b0\u3002\u5982\u679c\u4f60\u6709\u5174\u8da3\uff0c\u4e0d\u59a8\u5c1d\u8bd5\u4e00\u4e0b\u3002<\/p>\n<p>\u603b\u7ed3<\/p>\n<p>\u524d\u9762\u5570\u55e6\u4e86\u8fd9\u4e48\u591a\uff0c\u73b0\u5728\u603b\u7ed3\u4e00\u4e0b\u3002<\/p>\n<p>\u4fe1\u53f7\u548c\u69fd\u7684\u673a\u5236\u5b9e\u9645\u4e0a\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\u7684\u4e00\u79cd\u53d8\u5f62\u3002\u5b83\u662f\u9762\u5411\u7ec4\u4ef6\u7f16\u7a0b\u7684\u4e00\u79cd\u5f88\u5f3a\u5927\u7684\u5de5\u5177\u3002\u73b0\u5728\uff0c\u4fe1\u53f7\u69fd\u673a\u5236\u5df2\u7ecf\u6210\u4e3a\u8ba1\u7b97\u673a\u79d1\u5b66\u7684\u4e00\u79cd\u672f\u8bed\uff0c\u4e5f\u6709\u5f88\u591a\u79cd\u4e0d\u540c\u7684\u5b9e\u73b0\u3002<\/p>\n<p>Qt \u4fe1\u53f7\u69fd\u662f Qt \u6574\u4e2a\u67b6\u6784\u7684\u57fa\u7840\u4e4b\u4e00\uff0c\u56e0\u6b64\u5b83\u540c Qt \u63d0\u4f9b\u7684\u7ec4\u4ef6\u3001\u7ebf\u7a0b\u3001\u53cd\u5c04\u673a\u5236\u3001\u811a\u672c\u3001\u5143\u5bf9\u8c61\u673a\u5236\u4ee5\u53ca\u53ef\u89c6\u5316 IDE \u7b49\u7b49\u7d27\u5bc6\u5730\u96c6\u6210\u5728\u4e00\u8d77\u3002Qt \u7684\u4fe1\u53f7\u662f\u5bf9\u8c61\u7684\u6210\u5458\u51fd\u6570\uff0c\u6240\u4ee5\uff0c\u53ea\u6709\u62e5\u6709\u4fe1\u53f7\u7684\u5bf9\u8c61\u624d\u80fd\u53d1\u51fa\u4fe1\u53f7\u3002Qt \u7684\u7ec4\u4ef6\u548c\u8fde\u63a5\u53ef\u4ee5\u7531\u975e\u4ee3\u7801\u5f62\u5f0f\u7684\u8d44\u6e90\u6587\u4ef6\u7ed9\u51fa\uff0c\u5e76\u4e14\u80fd\u591f\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5efa\u7acb\u8fd9\u79cd\u8fde\u63a5\u3002Qt \u7684\u4fe1\u53f7\u69fd\u5b9e\u73b0\u5efa\u7acb\u5728 Qt \u5143\u5bf9\u8c61\u673a\u5236\u4e4b\u4e0a\u3002Qt \u5143\u5bf9\u8c61\u673a\u5236\u7531 Qt \u63d0\u4f9b\u7684 moc \u5de5\u5177\u5b9e\u73b0\u3002moc 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