{"id":4930,"date":"2018-07-28T12:08:40","date_gmt":"2018-07-28T04:08:40","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=4930"},"modified":"2018-07-28T12:08:40","modified_gmt":"2018-07-28T04:08:40","slug":"%e6%95%99%e7%a8%8b-%e9%80%9a%e8%bf%87-rtti-%e8%ae%be%e7%bd%ae%e5%af%b9%e8%b1%a1%e7%9a%84%e4%ba%8b%e4%bb%b6%e5%93%8d%e5%ba%94%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=4930","title":{"rendered":"[\u6559\u7a0b] \u901a\u8fc7 Rtti \u8bbe\u7f6e\u5bf9\u8c61\u7684\u4e8b\u4ef6\u54cd\u5e94\u51fd\u6570"},"content":{"rendered":"

\u6838\u5fc3\u63d0\u793a\uff1a\u8c03\u7528 TValue.Make \u51fd\u6570\u6765\u5c06\u4e8b\u4ef6\u7684\u54cd\u5e94\u51fd\u6570\u7ed1\u5b9a\u3002<\/p>\n

\u793a\u4f8b\uff1a\u6211\u4eec\u62ff TTimer \u6765\u505a\u4f8b\u5b50\uff0c\u6211\u4eec\u77e5\u9053\u5b83\u6709\u4e00\u4e2a OnTimer \u4e8b\u4ef6\uff0c\u4f46\u6211\u4eec\u53c8\u4e0d\u60f3\u5f15\u7528 TTimer \u6240\u5728\u7684\u5355\u5143\uff0c\u800c\u6211\u4eec\u8981\u4fee\u6539\u67d0\u4e2a\u5b9e\u4f8b\u7684 OnTimer \u4e8b\u4ef6\u54cd\u5e94\u51fd\u6570\uff08\u611f\u89c9\u597d\u7ed5\u662f\u5427\uff1f\u56e0\u4e3a\u53ea\u662f\u62ff\u6765\u505a\u4f8b\u5b50\uff0c\u53cd\u6b63\u770b\u4e0d\u61c2\u5c31\u5f53\u4e00\u5207\u5728\u505a\u68a6\uff0c\u4ec0\u4e48\u4e5f\u6ca1\u53d1\u751f\u5c31\u597d\u4e86\uff09\u3002<\/p>\n

\u4e0b\u9762\u7684\u4ee3\u7801\u91cc\uff0cATimer \u662f TTimer \u7684\u5b9e\u4f8b\uff0cDoTimer \u662f OnTimer \u4e8b\u4ef6\u7684\u65b0\u54cd\u5e94\u51fd\u6570\u3002<\/p>\n

var\r\n  ATimerClass: TRttiType;\r\n  AOnTimerProp: TRttiProperty;\r\n  AContext: TRttiContext;\r\n  AEvent: TNotifyEvent;\r\n  AMethod: TMethod absolute AEvent;\r\n  V: TValue;\r\nbegin\r\n...\r\n\/\/1.\u627e\u5230\u5bf9\u5e94\u7684 TRttiType\uff0c\u5f53\u7136\u83b7\u53d6\u5b83\u6709N\u79cd\u529e\u6cd5\r\nAContext:=TRttiContext.Create;\r\nATimerClass:=AContext.GetType(ATimer.ClassType);\r\n\/\/2.\u5c06\u4e8b\u4ef6\u7ed1\u5b9a\u5230\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\u4e0a\r\nAEvent := DoTimer;\r\n\/\/[\u6ce8\u610f]\u4e0d\u8981\u4f20 @AEvent\uff0c\u7f16\u8bd1\u5668\u4f18\u5316\u4f1a\u4f18\u5316\u51fa\u9519\u8bef\u7684\u7ed3\u679c\r\nTValue.Make(@AMethod, TypeInfo(TNotifyEvent), V);\r\n\/\/3.\u627e\u5230\u5c5e\u6027\u5b9a\u4e49\r\nAOnTimerProp := ATimerClass.GetProperty('OnTimer');\r\n\/\/4.\u7ed1\u5b9a\u4e8b\u4ef6\u5b8c\u6210\r\nAOnTimerProp.SetValue(ATimer, V);\r\nend;\r\n\r\n<\/pre>\n
OK\uff0c\u53c2\u8003\u4e0a\u9762\u7684\u4ee3\u7801\u5b9e\u73b0\u6b65\u9aa4\u5c31\u53ef\u4ee5\u4e86\uff0c\u5f53\u7136\u5982\u679c\u6709\u66f4\u597d\u7684\u65b9\u6cd5\uff0c\u6b22\u8fce\u5206\u4eab\u7ed9\u6211\u4eec\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6838\u5fc3\u63d0\u793a\uff1a\u8c03\u7528 TValue.Make  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8],"tags":[172,333,753],"class_list":["post-4930","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","tag-rtti","tag-333","tag-753"],"views":2864,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4930","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4930"}],"version-history":[{"count":1,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4930\/revisions"}],"predecessor-version":[{"id":4931,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/4930\/revisions\/4931"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}