{"id":74228,"date":"2024-03-20T14:04:52","date_gmt":"2024-03-20T05:04:52","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/c-%e3%81%a7%e3%83%80%e3%82%a4%e3%82%a2%e3%83%ad%e3%82%b0%e3%83%9c%e3%83%83%e3%82%af%e3%82%b9%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%95%e3%81%9b%e3%82%8b%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ae%e6%9b%b8\/"},"modified":"2025-08-11T06:23:36","modified_gmt":"2025-08-10T21:23:36","slug":"c-%e3%81%a7%e3%83%80%e3%82%a4%e3%82%a2%e3%83%ad%e3%82%b0%e3%83%9c%e3%83%83%e3%82%af%e3%82%b9%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%95%e3%81%9b%e3%82%8b%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ae%e6%9b%b8","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/c-%e3%81%a7%e3%83%80%e3%82%a4%e3%82%a2%e3%83%ad%e3%82%b0%e3%83%9c%e3%83%83%e3%82%af%e3%82%b9%e3%82%92%e8%a1%a8%e7%a4%ba%e3%81%95%e3%81%9b%e3%82%8b%e3%82%b3%e3%83%bc%e3%83%89%e3%81%ae%e6%9b%b8\/","title":{"rendered":"C++ \u3067\u30c0\u30a4\u30a2\u30ed\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u8868\u793a\u3055\u305b\u308b\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002"},"content":{"rendered":"<p>\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3059\u308b\u306b\u306f\u3001Windows API \u304b Qt \u306a\u3069\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Windows API \u3092\u4f7f\u7528\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;windows.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    <span class=\"hljs-comment\">\/\/ \u83b7\u53d6\u5f53\u524d\u7a97\u53e3\u53e5\u67c4<\/span>\r\n    HWND hwnd = <span class=\"hljs-built_in\">GetForegroundWindow<\/span>();\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u663e\u793a\u5bf9\u8bdd\u6846<\/span>\r\n    <span class=\"hljs-type\">int<\/span> result = <span class=\"hljs-built_in\">MessageBox<\/span>(hwnd, <span class=\"hljs-string\">L\"Hello World!\"<\/span>, <span class=\"hljs-string\">L\"\u63d0\u793a\"<\/span>, MB_OKCANCEL);\r\n    <span class=\"hljs-keyword\">if<\/span> (result == IDOK) {\r\n        <span class=\"hljs-built_in\">MessageBox<\/span>(hwnd, <span class=\"hljs-string\">L\"\u4f60\u70b9\u51fb\u4e86\u786e\u5b9a\u6309\u94ae\"<\/span>, <span class=\"hljs-string\">L\"\u63d0\u793a\"<\/span>, MB_OK);\r\n    } <span class=\"hljs-keyword\">else<\/span> <span class=\"hljs-keyword\">if<\/span> (result == IDCANCEL) {\r\n        <span class=\"hljs-built_in\">MessageBox<\/span>(hwnd, <span class=\"hljs-string\">L\"\u4f60\u70b9\u51fb\u4e86\u53d6\u6d88\u6309\u94ae\"<\/span>, <span class=\"hljs-string\">L\"\u63d0\u793a\"<\/span>, MB_OK);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001MessageBox\u95a2\u6570\u3092\u4f7f\u3063\u3066\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3057\u3066\u3044\u307e\u3059\u3002MessageBox\u95a2\u6570\u306e1\u756a\u76ee\u306e\u5f15\u6570\u306f\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u30cf\u30f3\u30c9\u30eb\u3067\u3001GetForegroundWindow\u95a2\u6570\u3092\u4f7f\u3063\u3066\u73fe\u5728\u306e\u30a6\u30a3\u30f3\u30c9\u30a6\u306e\u30cf\u30f3\u30c9\u30eb\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u30022\u756a\u76ee\u306e\u5f15\u6570\u306f\u30c0\u30a4\u30a2\u30ed\u30b0\u306b\u8868\u793a\u3059\u308b\u30c6\u30ad\u30b9\u30c8\u5185\u5bb9\u30013\u756a\u76ee\u306e\u5f15\u6570\u306f\u30c0\u30a4\u30a2\u30ed\u30b0\u306e\u30bf\u30a4\u30c8\u30eb\u30014\u756a\u76ee\u306e\u5f15\u6570\u306f\u30c0\u30a4\u30a2\u30ed\u30b0\u306e\u30dc\u30bf\u30f3\u7a2e\u985e\uff08\u305f\u3068\u3048\u3070\u3001MB_OK\u306f\u300cOK\u300d\u30dc\u30bf\u30f3\u3001MB_OKCANCEL\u306f\u300cOK\u300d\u3068\u300c\u30ad\u30e3\u30f3\u30bb\u30eb\u300d\u30dc\u30bf\u30f3\u3092\u8868\u3057\u307e\u3059\uff09\u3002<\/p>\n<p>Qt \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;QMessageBox&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">(<span class=\"hljs-type\">int<\/span> argc, <span class=\"hljs-type\">char<\/span> *argv[])<\/span> <\/span>{\r\n    <span class=\"hljs-function\">QApplication <span class=\"hljs-title\">app<\/span><span class=\"hljs-params\">(argc, argv)<\/span><\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u663e\u793a\u5bf9\u8bdd\u6846<\/span>\r\n    QMessageBox::StandardButton reply = QMessageBox::<span class=\"hljs-built_in\">question<\/span>(<span class=\"hljs-literal\">nullptr<\/span>, <span class=\"hljs-string\">\"\u63d0\u793a\"<\/span>, <span class=\"hljs-string\">\"Hello World!\"<\/span>, QMessageBox::Yes | QMessageBox::No);\r\n    <span class=\"hljs-keyword\">if<\/span> (reply == QMessageBox::Yes) {\r\n        QMessageBox::<span class=\"hljs-built_in\">information<\/span>(<span class=\"hljs-literal\">nullptr<\/span>, <span class=\"hljs-string\">\"\u63d0\u793a\"<\/span>, <span class=\"hljs-string\">\"\u4f60\u70b9\u51fb\u4e86Yes\u6309\u94ae\"<\/span>);\r\n    } <span class=\"hljs-keyword\">else<\/span> <span class=\"hljs-keyword\">if<\/span> (reply == QMessageBox::No) {\r\n        QMessageBox::<span class=\"hljs-built_in\">information<\/span>(<span class=\"hljs-literal\">nullptr<\/span>, <span class=\"hljs-string\">\"\u63d0\u793a\"<\/span>, <span class=\"hljs-string\">\"\u4f60\u70b9\u51fb\u4e86No\u6309\u94ae\"<\/span>);\r\n    }\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> app.<span class=\"hljs-built_in\">exec<\/span>();\r\n}\r\n<\/code><\/pre>\n<p>QMessageBox\u30af\u30e9\u30b9\u306f\u3001Qt\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u30c0\u30a4\u30a2\u30ed\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002question\u95a2\u6570\u306f\u300c\u306f\u3044\u300d\u307e\u305f\u306f\u300c\u3044\u3044\u3048\u300d\u306e\u30dc\u30bf\u30f3\u3092\u6301\u3061\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u9078\u629e\u3092\u8fd4\u3057\u307e\u3059\u3002information\u95a2\u6570\u306f\u5358\u306a\u308b\u60c5\u5831\u3092\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30c0\u30a4\u30a2\u30ed\u30b0\u3092\u8868\u793a\u3059\u308b\u306b\u306f\u3001Windows API \u304b Qt \u306a\u3069\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 Windows API \u3092\u4f7f\u7528\u3057\u305f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002 #include &lt;windows.h [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-74228","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>C++ \u3067\u30c0\u30a4\u30a2\u30ed\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u8868\u793a\u3055\u305b\u308b\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"C++ 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Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#website\"},\"datePublished\":\"2024-03-20T05:04:52+00:00\",\"dateModified\":\"2025-08-10T21:23:36+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/#\/schema\/person\/601389077b7f4e4ad6115428e3b73bff\"},\"description\":\"C++ 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