{"id":109,"date":"2015-07-08T16:39:46","date_gmt":"2015-07-08T08:39:46","guid":{"rendered":"https:\/\/blog.freesilo.com\/?p=109"},"modified":"2015-07-08T16:39:46","modified_gmt":"2015-07-08T08:39:46","slug":"%e5%88%a9%e7%94%a8cmarshal%e7%b1%bb%e5%ae%9e%e7%8e%b0%e6%89%98%e7%ae%a1%e5%92%8c%e9%9d%9e%e6%89%98%e7%ae%a1%e7%9a%84%e7%9b%b8%e4%ba%92%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/freesilo.com\/?p=109","title":{"rendered":"\u5229\u7528C#Marshal\u7c7b\u5b9e\u73b0\u6258\u7ba1\u548c\u975e\u6258\u7ba1\u7684\u76f8\u4e92\u8f6c\u6362"},"content":{"rendered":"<div>\n<p>Marshal \u7c7b<\/p>\n<p>\u547d\u540d\u7a7a\u95f4:System.Runtime.InteropServices<\/p>\n<\/div>\n<p>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u65b9\u6cd5\u96c6\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u7528\u4e8e\u5206\u914d\u975e\u6258\u7ba1\u5185\u5b58\u3001\u590d\u5236\u975e\u6258\u7ba1\u5185\u5b58\u5757\u3001\u5c06\u6258\u7ba1\u7c7b\u578b\u8f6c\u6362\u4e3a\u975e\u6258\u7ba1\u7c7b\u578b\uff0c\u6b64\u5916\u8fd8\u63d0\u4f9b\u4e86\u5728\u4e0e\u975e\u6258\u7ba1\u4ee3\u7801\u4ea4\u4e92\u65f6\u4f7f\u7528\u7684\u5176\u4ed6\u6742\u9879\u65b9\u6cd5\u3002\u00a0<strong>Marshal<\/strong>\u00a0\u7c7b\u4e2d\u5b9a\u4e49\u7684\u00a0<strong>static<\/strong>\u00a0\u65b9\u6cd5\u5bf9\u4e8e\u5904\u7406\u975e\u6258\u7ba1\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002\u6b64\u7c7b\u4e2d\u5b9a\u4e49\u7684\u5927\u591a\u6570\u65b9\u6cd5\u901a\u5e38\u7531\u9700\u8981\u5728\u6258\u7ba1\u548c\u975e\u6258\u7ba1\u7f16\u7a0b\u6a21\u578b\u4e4b\u95f4\u63d0\u4f9b\u6865\u6881\u7684\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u3002\u4f8b\u5982\uff0cStringToHGlobalAnsi\u00a0\u65b9\u6cd5\u5c06 ANSI \u5b57\u7b26\u4ece\u6307\u5b9a\u7684\u5b57\u7b26\u4e32\uff08\u5728\u6258\u7ba1\u5806\u4e2d\uff09\u590d\u5236\u5230\u975e\u6258\u7ba1\u5806\u4e2d\u7684\u7f13\u51b2\u533a\u3002\u8be5\u65b9\u6cd5\u8fd8\u5206\u914d\u5927\u5c0f\u6b63\u786e\u7684\u76ee\u6807\u5806\u3002<\/p>\n<p>struct\u548cIntPtr\u7684\u76f8\u4e92\u8f6c\u6362\uff1a<\/p>\n<p>tagCaptureFrame f = (tagCaptureFrame)<strong>Marshal.PtrToStructure<\/strong>\u00a0(m.WParam, typeof(tagCaptureFrame));<\/p>\n<p>&nbsp;<\/p>\n<p>struct\u548cbyte[]\u76f8\u4e92\u8f6c\u6362\uff08\u7528Marshal\u7c7b\u5b9e\u73b0\uff09<\/p>\n<p>\u8f6c\u8f7d\u81ea\uff1a<a href=\"http:\/\/www.cnblogs.com\/tuyile006\/archive\/2006\/12\/28\/605962.html\">http:\/\/www.cnblogs.com\/tuyile006\/archive\/2006\/12\/28\/605962.html<\/a><\/p>\n<p><strong>\u76f8\u5f53\u4e8e\u5e8f\u5217\u5316\u4e0e\u53cd\u5e8f\u5217\u5316\uff0c\u4f46\u662f\u4e0d\u7528\u501f\u52a9\u5916\u90e8\u6587\u4ef6<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>1\u3001struct\u8f6c\u6362\u4e3abyte[]<\/strong><\/p>\n<pre class=\"theme:vs2012 toolbar:2 lang:c# decode:true\">static byte[] StructToBytes(object structObj)\n{\nint size = Marshal.SizeOf(structObj);\nIntPtr buffer = Marshal.AllocHGlobal(size);\ntry\n{\nMarshal.StructureToPtr(structObj, buffer, false);\nbyte[] bytes = new byte[size];\nMarshal.Copy(buffer, bytes, 0, size);\nreturn bytes;\n}\nfinally\n{\nMarshal.FreeHGlobal(buffer);\n}\n\n}<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u00a0\u00a0 2\u3001byte[]\u8f6c\u6362\u4e3astruct<br \/>\n<\/strong><\/p>\n<pre class=\"theme:vs2012 toolbar:2 lang:c# decode:true\">static object BytesToStruct(byte[] bytes, Type strcutType)\n{\nint size = Marshal.SizeOf(strcutType);\nIntPtr buffer = Marshal.AllocHGlobal(size);\ntry\n{\nMarshal.Copy(bytes, 0, buffer, size);\nreturn Marshal.PtrToStructure(buffer, strcutType);\n}\nfinally\n{\nMarshal.FreeHGlobal(buffer);\n}\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Marshal \u7c7b \u547d\u540d\u7a7a\u95f4:System.Runtime.InteropSer&#8230;<br \/><a class=\"read-more-button\" href=\"https:\/\/freesilo.com\/?p=109\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-109","post","type-post","status-publish","format-standard","hentry","category-csharp"],"_links":{"self":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=109"}],"version-history":[{"count":0,"href":"https:\/\/freesilo.com\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions"}],"wp:attachment":[{"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/freesilo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}