{"id":3758,"date":"2016-03-31T17:34:08","date_gmt":"2016-03-31T09:34:08","guid":{"rendered":"http:\/\/blog.qdac.cc\/?p=3758"},"modified":"2016-04-01T10:12:55","modified_gmt":"2016-04-01T02:12:55","slug":"%e6%8a%80%e5%b7%a7c-builder-%e4%b8%ad%e6%85%8e%e7%94%a8-supports-%e5%87%bd%e6%95%b0%e6%9d%a5%e5%8f%96%e6%8e%a5%e5%8f%a3%e7%9a%84%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/blog.qdac.cc\/?p=3758","title":{"rendered":"[\u6280\u5de7]C++ Builder \u4e2d\u614e\u7528 Supports \u51fd\u6570\u6765\u53d6\u63a5\u53e3\u7684\u5b9e\u4f8b"},"content":{"rendered":"<p>\u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e2a\u95ee\u9898\u5728\u4e8e C++ Builder \u662f\u901a\u8fc7\u4e00\u4e2a\u6a21\u677f\u6765\u5904\u7406\u63a5\u53e3\u7684\u81ea\u52a8\u91ca\u653e\u7684\uff0c\u5b9e\u9645\u4e0a\u76f8\u5f53\u4e8e\u73a9\u4e86\u4e00\u4e2aauto_ptr\uff0c\u4f46 Supports \u9700\u8981\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570\uff0c\u786e\u662f\u4e00\u4e2a\u6307\u9488\uff0c\u90a3\u4e48\u8fd9\u4e2a\u5c31\u7528\u6765\u6bd4\u8f83\u9ebb\u70e6\u4e86\u3002<\/p>\n<p>\u8fd9\u6837\u7528:<\/p>\n<pre class=\"lang:c++ decode:true \">_di_IQService AService;\r\nif(Supports(PluginsManager()-&gt;ByPath(L\"Services\/Dock\/Forms\",__uuidof(IQFormService),AService))<\/pre>\n<p>\u7f16\u8bd1\u80fd\u8fc7\u53bb\uff0c\u4f46\u662f\u5f97\u5230\u7684\u7ed3\u679c\u662f\u4e0d\u5bf9\u7684\u3002<\/p>\n<p>\u8fd9\u6837\u7528\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">_di_IQService AService;\r\nif(Supports(PluginsManager()-&gt;ByPath(L\"Services\/Dock\/Forms\",__uuidof(IQFormService) ,&amp;AService))<\/pre>\n<p>\u5f97\u5230\u7684 AService \u662f\u4e00\u4e2a\u6709\u6548\u7684\u503c\uff0c\u4f46\u662f\uff0c\u5982\u679c\u4f60\u91cd\u590d\u8c03\u7528\u65f6\uff0c\u7531\u4e8e auto_ptr \u7684\u7279\u6027\u6ca1\u6709\u8d77\u4f5c\u7528\uff0c\u7ed3\u679c\u5c31\u4f1a\u4e71\u5957\u4e86\u3002\u800c\u5728\u91cd\u590d\u4e0b\u6b21\u8c03\u7528\u524d\uff0c\u4f60\u9700\u8981\u624b\u52a8\u7684\u8c03\u7528\u63a5\u53e3\u7684 release \u53bb\u91ca\u653e\u8ba1\u6570\uff0c\u663e\u793a\u592a\u9ebb\u70e6\u4e86\uff0c\u4e00\u4e2a\u4e0d\u6ce8\u610f\u5e94\u5bb9\u6613\u51fa\u9519\u3002<\/p>\n<p>\u90a3\u4e48\u5728 C++ Builder \u4e2d\uff0c\u96be\u9053\u6211\u4eec\u5c31\u6ce8\u610f\u5fe7\u90c1\u7ec8\u751f\u5417\uff1f\u4e0d\u662f\u7684\uff0c\u65b0\u7248\u7684 C++ Builder \u63d0\u4f9b\u4e86\u4e00\u4e2a interface_cast \u6a21\u677f\uff0c\u53ef\u4ee5\u8ba9\u6211\u4eec\u5f97\u5230\u4e0d\u5dee\u4e8e Delphi \u4e2d Supports \u7684\u5f85\u9047\uff0c\u4e0a\u9762\u7684\u4ee3\u7801\u5b9e\u9645\u4e0a\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">_di_IQServices AServices;\r\nif((AService=interface_cast&lt;IQServices&gt;(PluginsManager()-&gt;ByPath(L\"Services\/Dock\/Forms\"))))\r\n...<\/pre>\n<p>\u5e76\u4e0d\u6bd4 Delphi \u7684 Supports \u5dee\u5230\u90a3\u91cc\u53bb\uff0c\u662f\u4e0d\u662f\uff1f\u800c\u4f5c\u4e3a\u6211\u4eec QDAC \u7684\u7528\u6237\uff0c\u5f53\u7136\u8981\u63d0\u4f9b\u8fdb\u4e00\u6b65\u7684\u5f85\u9047\uff0c\u5728 QString \u65b0\u4e3a\u5927\u5bb6\u63d0\u4f9b\u4e86\u4e00\u4e2a\u66f4\u7b80\u5355\u7684 C++ \u5c01\u88c5 HasInterface \u548c ToInterface \u5b9a\u4e49\uff0c\u524d\u8005\u6bd4 Delphi \u7684 Supports \u53ef\u4ee5\u5c11\u5199\u4e00\u4e2a\u53c2\u6570\uff0c\u540e\u8005\u548c interface_cast \u5c11\u5199\u51e0\u4e2a\u5b57\u6bcd\uff08\u4e3b\u8981\u662f\u89e3\u51b3\u65e9\u671f\u7248\u672c\u6ca1\u5e26 interface_cast \u7684\u95ee\u9898\uff0c\u4f46\u53c8\u61d2\u7684\u67e5\u4ece\u90a3\u4e2a\u7248\u672c\u5f00\u59cb\u6709\u7684 interface_cast :-: \uff09\uff1a<\/p>\n<pre class=\"lang:delphi decode:true\">template&lt;class T&gt;\r\nbool __fastcall HasInterface(IUnknown *AIntf, DelphiInterface&lt;T&gt; &amp;AResult)\r\n{\r\n\tT *ATemp;\r\n\tif (AIntf-&gt;QueryInterface(__uuidof(T), (void **)&amp;ATemp) == S_OK)\r\n\t{\r\n\t\tAResult = ATemp;\r\n\t\tATemp-&gt;Release();\r\n\t\treturn true;\r\n\t}\r\n\treturn false;\r\n}\r\n\r\ntemplate&lt;class T&gt;\r\nbool __fastcall HasInterface(TObject *AObject, DelphiInterface&lt;T&gt; &amp;AResult)\r\n{\r\n\tT *ATemp = NULL;\r\n\tif (AObject-&gt;GetInterface(__uuidof(T), &amp;ATemp))\r\n\t{\r\n\t\tAResult = ATemp;\r\n\t\tATemp-&gt;Release();\r\n\t\treturn true;\r\n\t}\r\n\treturn false;\r\n}\r\n\r\ntemplate&lt;class T&gt;\r\nDelphiInterface&lt;T&gt; __fastcall ToInterface(TObject *AObject)\r\n{\r\nDelphiInterface&lt;T&gt; ARetVal;\r\nHasInterface(AObject, ARetVal);\r\nreturn ARetVal;\r\n}\r\ntemplate&lt;class T&gt;\r\nDelphiInterface&lt;T&gt; __fastcall ToInterface(IUnknown *AIntf)\r\n{\r\nDelphiInterface&lt;T&gt; ARetVal;\r\nHasInterface(AIntf, ARetVal);\r\nreturn ARetVal;\r\n}<\/pre>\n<p>\u800c\u4f7f\u7528\u65f6\uff0c\u4ee3\u7801\u5c31\u53d8\u6210\u4e86\uff1a<\/p>\n<pre class=\"lang:delphi decode:true \">_di_IQService AService;\r\nif(HasInterface(PluginsManager()-&gt;ByPath(L\"Services\/Dock\/Forms\",AService))\r\n  \uff5b\r\n   AService....\r\n   \uff5d<\/pre>\n<p>\u662f\u4e0d\u662f\u770b\u8d77\u6765\u66f4\u7b80\u6d01\u4e86:)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b9e\u9645\u4e0a\uff0c\u8fd9\u4e2a\u95ee\u9898\u5728\u4e8e C++ Build [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","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 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[69,8,21],"tags":[583,582],"class_list":["post-3758","post","type-post","status-publish","format-standard","hentry","category-c-builder","category-delphi","category-misc","tag-hasinterface","tag-supports"],"views":3285,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3758","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=3758"}],"version-history":[{"count":5,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3758\/revisions"}],"predecessor-version":[{"id":3764,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3758\/revisions\/3764"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3758"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3758"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3758"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}