{"id":74003,"date":"2024-03-20T13:47:49","date_gmt":"2024-03-20T04:47:49","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/delphi%e5%a4%9a%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ab%e3%82%88%e3%82%8b%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e4%bb%95%e7%b5%84%e3%81%bf\/"},"modified":"2025-08-11T05:20:21","modified_gmt":"2025-08-10T20:20:21","slug":"delphi%e5%a4%9a%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ab%e3%82%88%e3%82%8b%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e4%bb%95%e7%b5%84%e3%81%bf","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/delphi%e5%a4%9a%e3%82%b9%e3%83%ac%e3%83%83%e3%83%89%e3%81%ab%e3%82%88%e3%82%8b%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%b3%e3%83%94%e3%83%bc%e3%81%ae%e4%bb%95%e7%b5%84%e3%81%bf\/","title":{"rendered":"Delphi\u591a\u30b9\u30ec\u30c3\u30c9\u306b\u3088\u308b\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u306e\u4ed5\u7d44\u307f"},"content":{"rendered":"<p>Delphi\u3067\u306f\u3001TThread\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3067\u306e\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">unit<\/span> Unit1;\r\n\r\n<span class=\"hljs-keyword\">interface<\/span>\r\n\r\n<span class=\"hljs-keyword\">uses<\/span>\r\n  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,\r\n  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls;\r\n\r\n<span class=\"hljs-keyword\">type<\/span>\r\n  <span class=\"hljs-title\">TCopyThread<\/span> = <span class=\"hljs-keyword\">class<\/span>(TThread)\r\n  <span class=\"hljs-keyword\">private<\/span>\r\n    FSourceFile: <span class=\"hljs-keyword\">string<\/span>;\r\n    FDestFile: <span class=\"hljs-keyword\">string<\/span>;\r\n  <span class=\"hljs-keyword\">protected<\/span>\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">Execute<\/span>;<\/span> <span class=\"hljs-keyword\">override<\/span>;\r\n  <span class=\"hljs-keyword\">public<\/span>\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">constructor<\/span> <span class=\"hljs-title\">Create<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">const<\/span> SourceFile, DestFile: <span class=\"hljs-keyword\">string<\/span>)<\/span>;<\/span>\r\n  <span class=\"hljs-keyword\">end<\/span>;\r\n\r\n  <span class=\"hljs-title\">TForm1<\/span> = <span class=\"hljs-keyword\">class<\/span>(TForm)\r\n    Button1: TButton;\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">Button1Click<\/span><span class=\"hljs-params\">(Sender: TObject)<\/span>;<\/span>\r\n  <span class=\"hljs-keyword\">private<\/span>\r\n    FCopyThread: TCopyThread;\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">CopyProgress<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">const<\/span> BytesCopied, TotalBytes: Int64)<\/span>;<\/span>\r\n  <span class=\"hljs-keyword\">end<\/span>;\r\n\r\n<span class=\"hljs-keyword\">var<\/span>\r\n  Form1: TForm1;\r\n\r\n<span class=\"hljs-keyword\">implementation<\/span>\r\n\r\n<span class=\"hljs-meta\">{$R *.dfm}<\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">constructor<\/span> <span class=\"hljs-title\">TCopyThread<\/span>.<span class=\"hljs-title\">Create<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">const<\/span> SourceFile, DestFile: <span class=\"hljs-keyword\">string<\/span>)<\/span>;<\/span>\r\n<span class=\"hljs-keyword\">begin<\/span>\r\n  <span class=\"hljs-keyword\">inherited<\/span> Create(True);\r\n  FSourceFile := SourceFile;\r\n  FDestFile := DestFile;\r\n<span class=\"hljs-keyword\">end<\/span>;\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">TCopyThread<\/span>.<span class=\"hljs-title\">Execute<\/span>;<\/span>\r\n<span class=\"hljs-keyword\">var<\/span>\r\n  SourceStream, DestStream: TFileStream;\r\n  Buffer: <span class=\"hljs-keyword\">array<\/span>[<span class=\"hljs-number\">0<\/span>..<span class=\"hljs-number\">8191<\/span>] <span class=\"hljs-keyword\">of<\/span> Byte;\r\n  BytesRead, BytesWritten: Integer;\r\n<span class=\"hljs-keyword\">begin<\/span>\r\n  SourceStream := TFileStream.Create(FSourceFile, fmOpenRead <span class=\"hljs-keyword\">or<\/span> fmShareDenyWrite);\r\n  <span class=\"hljs-keyword\">try<\/span>\r\n    DestStream := TFileStream.Create(FDestFile, fmCreate);\r\n    <span class=\"hljs-keyword\">try<\/span>\r\n      <span class=\"hljs-keyword\">repeat<\/span>\r\n        BytesRead := SourceStream.<span class=\"hljs-keyword\">Read<\/span>(Buffer, SizeOf(Buffer));\r\n        <span class=\"hljs-keyword\">if<\/span> BytesRead &gt; <span class=\"hljs-number\">0<\/span> <span class=\"hljs-keyword\">then<\/span>\r\n        <span class=\"hljs-keyword\">begin<\/span>\r\n          BytesWritten := DestStream.<span class=\"hljs-keyword\">Write<\/span>(Buffer, BytesRead);\r\n          <span class=\"hljs-keyword\">if<\/span> BytesWritten &lt;&gt; BytesRead <span class=\"hljs-keyword\">then<\/span>\r\n            <span class=\"hljs-keyword\">Break<\/span>;\r\n          Synchronize(<span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span>\r\n          <span class=\"hljs-title\">begin<\/span>\r\n            <span class=\"hljs-comment\">\/\/ \u66f4\u65b0\u8fdb\u5ea6\u663e\u793a<\/span>\r\n            <span class=\"hljs-title\">Form1<\/span>.<span class=\"hljs-title\">CopyProgress<\/span><span class=\"hljs-params\">(SourceStream.Position, SourceStream.Size)<\/span>;<\/span>\r\n          <span class=\"hljs-keyword\">end<\/span>);\r\n        <span class=\"hljs-keyword\">end<\/span>;\r\n      <span class=\"hljs-keyword\">until<\/span> BytesRead = <span class=\"hljs-number\">0<\/span>;\r\n    <span class=\"hljs-keyword\">finally<\/span>\r\n      DestStream.Free;\r\n    <span class=\"hljs-keyword\">end<\/span>;\r\n  <span class=\"hljs-keyword\">finally<\/span>\r\n    SourceStream.Free;\r\n  <span class=\"hljs-keyword\">end<\/span>;\r\n<span class=\"hljs-keyword\">end<\/span>;\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">TForm1<\/span>.<span class=\"hljs-title\">Button1Click<\/span><span class=\"hljs-params\">(Sender: TObject)<\/span>;<\/span>\r\n<span class=\"hljs-keyword\">begin<\/span>\r\n  <span class=\"hljs-keyword\">if<\/span> FCopyThread = <span class=\"hljs-keyword\">nil<\/span> <span class=\"hljs-keyword\">then<\/span>\r\n  <span class=\"hljs-keyword\">begin<\/span>\r\n    FCopyThread := TCopyThread.Create(<span class=\"hljs-string\">'source.txt'<\/span>, <span class=\"hljs-string\">'dest.txt'<\/span>);\r\n    FCopyThread.FreeOnTerminate := True;\r\n    FCopyThread.Start;\r\n    Button1.Caption := <span class=\"hljs-string\">'\u53d6\u6d88'<\/span>;\r\n  <span class=\"hljs-keyword\">end<\/span>\r\n  <span class=\"hljs-keyword\">else<\/span>\r\n  <span class=\"hljs-keyword\">begin<\/span>\r\n    FCopyThread.Terminate;\r\n    FCopyThread := <span class=\"hljs-keyword\">nil<\/span>;\r\n    Button1.Caption := <span class=\"hljs-string\">'\u5f00\u59cb'<\/span>;\r\n  <span class=\"hljs-keyword\">end<\/span>;\r\n<span class=\"hljs-keyword\">end<\/span>;\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">procedure<\/span> <span class=\"hljs-title\">TForm1<\/span>.<span class=\"hljs-title\">CopyProgress<\/span><span class=\"hljs-params\">(<span class=\"hljs-keyword\">const<\/span> BytesCopied, TotalBytes: Int64)<\/span>;<\/span>\r\n<span class=\"hljs-keyword\">begin<\/span>\r\n  <span class=\"hljs-comment\">\/\/ \u66f4\u65b0\u8fdb\u5ea6\u663e\u793a<\/span>\r\n  Caption := Format(<span class=\"hljs-string\">'Copying %d\/%d bytes'<\/span>, [BytesCopied, TotalBytes]);\r\n<span class=\"hljs-keyword\">end<\/span>;\r\n\r\n<span class=\"hljs-keyword\">end<\/span>.\r\n<\/code><\/pre>\n<p>\u30dc\u30bf\u30f3\u30af\u30ea\u30c3\u30af\u30a4\u30d9\u30f3\u30c8\u3067TCopyThread\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u30b9\u30ec\u30c3\u30c9\u3092\u958b\u59cb\u3057\u3001\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002TCopyThread.Execute\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001TFileStream\u3092\u4f7f\u7528\u3057\u3066\u30bd\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u5bb9\u3092\u8aad\u307f\u53d6\u3063\u3066\u30bf\u30fc\u30b2\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3093\u3067\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30c7\u30fc\u30bf\u306e\u66f8\u304d\u8fbc\u307f\u3054\u3068\u306bSynchronize\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3067\u30d7\u30ed\u30b0\u30ec\u30b9\u8868\u793a\u3092\u66f4\u65b0\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u30dc\u30bf\u30f3\u3092\u7f6e\u304d\u3001Button1Click\u30e1\u30bd\u30c3\u30c9\u306b\u30dc\u30bf\u30f3\u306eOnClick\u30a4\u30d9\u30f3\u30c8\u3092\u30d0\u30a4\u30f3\u30c9\u3057\u307e\u3059\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u64cd\u4f5c\u3092\u958b\u59cb\u307e\u305f\u306f\u30ad\u30e3\u30f3\u30bb\u30eb\u3067\u304d\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u30a6\u30a4\u30f3\u30c9\u30a6\u306e\u30bf\u30a4\u30c8\u30eb\u30d0\u30fc\u306b\u306f\u30b3\u30d4\u30fc\u306e\u9032\u6357\u72b6\u6cc1\u304c\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3059\u308b\u5834\u5408\u306f\u3001\u753b\u9762\u304c\u30d5\u30ea\u30fc\u30ba\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u30b3\u30d4\u30fc\u4e2d\u306b\u30d7\u30ed\u30b0\u30ec\u30b9\u30d0\u30fc\u306a\u3069\u3092\u7528\u3044\u3066\u9032\u6357\u72b6\u6cc1\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Delphi\u3067\u306f\u3001TThread\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3067\u306e\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002 unit Unit1; interface uses Winapi.Windows, Wi [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-74003","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Delphi\u591a\u30b9\u30ec\u30c3\u30c9\u306b\u3088\u308b\u30d5\u30a1\u30a4\u30eb\u30b3\u30d4\u30fc\u306e\u4ed5\u7d44\u307f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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