{"id":61989,"date":"2026-01-19T02:17:53","date_gmt":"2026-01-18T18:17:53","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/61989.html"},"modified":"2026-01-19T02:17:53","modified_gmt":"2026-01-18T18:17:53","slug":"qt%e8%bf%9b%e9%98%b6%e6%97%a5%e8%ae%b0004","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/61989.html","title":{"rendered":"QT\u8fdb\u9636\u65e5\u8bb0004"},"content":{"rendered":"<\/p>\n<p>\u591a\u5a92\u4f53<br \/>\n\u4e00\u3001\u9879\u76ee\u52a0\u00a0<br \/>\nQT \u00a0 &#043;&#061;\u2026\u2026 multimedia multimediaWidgets<br \/>\n\u4e8c\u3001\u521b\u5efa\u4e00\u4e2aQWidget\u9879\u76ee<br \/>\n\u4e09\u3001\u5e03\u5c40\u4e00\u4e2a\u754c\u9762<br \/>\n\u6dfb\u52a0\u4e00\u4e2a\u663e\u793a\u89c6\u9891\u7684\u5bb9\u5668Widget\u5bb9\u5668\u5230\u754c\u9762\u6765\u3002playWindow<br \/>\n\u6dfb\u52a0\u64ad\u653e&#xff0c;\u6682\u505c&#xff0c;\u7ed3\u675f&#xff0c;\u5feb\u8fd1&#xff0c;\u5feb\u9000&#xff0c;\u7b49\u6309\u94aeQPushButton<br \/>\nbtnPlay,btnPause,btnEnd,btnFront,btnBack\u7b49\u547d\u540d<br \/>\n\u6dfb\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761QSlider\u5f53\u64ad\u653e\u8fdb\u5ea6\u6761&#xff0c;\u6dfb\u52a0\u4e00\u4e2a\u5f53\u97f3\u91cf\u6761\u3002<br \/>\nsliPlay,sliSound<br \/>\n\u6dfb\u52a0\u4e00\u4e2a\u6807\u7b7eQLabel&#xff0c;\u663e\u793a\u603b\u65f6\u95f4\u957f\/\u5f53\u524d\u4f4d\u7f6e\u65f6\u95f4&#xff0c;laVol<br \/>\n\u8fd9\u6837\u7684\u8bdd&#xff0c;\u754c\u9762\u5143\u7d20\u57fa\u672c\u4e0a\u5c31\u591f\u4e86\u3002<\/p>\n<p>\u56db\u3001\u5199\u4ee3\u7801<br \/>\n1\u3001\u5f15\u7528<br \/>\n#include&lt;QMediaPlayer&gt;\/\/\u64ad\u653e\u5668\u7c7b<br \/>\n#include&lt;QMediaDevices&gt;\/\/\u591a\u5a92\u4f53\u8bbe\u5907<br \/>\n#include&lt;QAudioOutput&gt;\/\/\u97f3\u9891\u8f93\u51fa\u8bbe\u5907<br \/>\n#include&lt;QvideoWidget&gt;\/\/\u89c6\u9891\u8f93\u51fa\u7a97\u53e3<br \/>\n\u5728H\u6587\u4ef6\u91cc\u5b9a\u4e49\u4e00\u4e2a<br \/>\nQMediaPlayer * m_play;<br \/>\n\u5728cpp\u91cc\u7684\u521d\u59cb\u5316<br \/>\n\u5728\u6784\u9020\u51fd\u6570\u91cc\u5c31\u884c\u4e86<br \/>\nMyPlayer :: MyPlayer(QWidget * parent):QWidget(parent),ui(new Ui :: Widget),m_play(new QMediaPlayer(this))<br \/>\n{<br \/>\n\u00a0\u00a0 \u00a0ui-&gt;setupUi(this);<br \/>\n\u00a0\u00a0 \u00a0\/\/\u8bbe\u7f6e\u64ad\u653e\u6765\u6e90<br \/>\n\u00a0\u00a0 \u00a0m_play-&gt;setSource(QUrl(&#034;\u6587\u4ef6\/\u5730\/\u5740\/file.mp3&#034;));\/\/\u6709mp3,mp4<br \/>\n\u00a0\u00a0 \u00a0\u8fde\u63a5\u770b\u770b\u9519\u8bef\u72b6\u6001\u7b49\u4fe1\u53f7<br \/>\n\u00a0\u00a0 \u00a0connect(m_player,&amp;QMediaPlayer :: errorOccureed,this,[&#061;](QMediaPlayer :: Error error,const QString $str){<br \/>\n\u00a0\u00a0 \u00a0qDebug()&lt;&lt;str;<br \/>\n\u00a0\u00a0 \u00a0});\u00a0\u00a0 \u00a0<br \/>\n\u00a0\u00a0 \u00a0\/\/\u5173\u8054\u4fe1\u53f7&#xff0c;\u5f97\u5230\u65f6\u957f\u53d8\u5316\u00a0<br \/>\n\u00a0\u00a0 \u00a0connect(m_player,&amp;QMediaPlayer :: durationChanged,this,[](qint64 duration){<br \/>\n\u00a0\u00a0 \u00a0\u5f53\u6539\u53d8\u65f6\u957f\u65f6&#xff0c;\u89e6\u53d1\u8fd9\u4e2a\u5904\u7406\u8fc7\u7a0b&#xff0c;\u8be5\u65f6\u95f4\u662f\u6beb\u79d2\u5355\u4f4d\u3002<br \/>\n\u00a0\u00a0 \u00a0ui-&gt;laVol-&gt;setText(QString (&#034;%1:%2:%3&#034;).arg(duration\/1000\/60\/60,2,10,QChar(&#039;0&#039;)).arg(duration\/1000\/60,2,10,QChar(&#039;0&#039;)).arg(duration\/1000%60,2,10,QChar(&#039;0&#039;));<br \/>\n});<br \/>\n\u00a0\u00a0 \u00a0\/\/\u8bbe\u5b9a\u97f3\u9891\u8f93\u51fa\u8bbe\u5907<br \/>\n\u00a0\u00a0 \u00a0m_play-&gt;setAudiaOutput(new QAudioOutput(this));<\/p>\n<p>\u00a0\u00a0 \u00a0\/\/\u89c6\u9891\u8f93\u51fa\u8bbe\u5907<br \/>\n\u00a0\u00a0 \u00a0QVideoWidget wg&#061;new QVideoWidget(this);<br \/>\n\u00a0\u00a0 \u00a0\u5305\u88c5\u4e00\u4e2a\u5c42<br \/>\n\u00a0\u00a0 \u00a0QHBoxlayout * lay&#061;new QHBoxLayout(ui-&gt;playWindow);<br \/>\n\u00a0\u00a0 \u00a0lay-&gt;addWidget(wg);<br \/>\n\u00a0\u00a0 \u00a0m_play-&gt;setVideoOutput(wg);<br \/>\n\u00a0\u00a0 \u00a0m_play-&gt;play();<br \/>\n}<br \/>\nMyPlayer :: ~MyPlayer()<br \/>\n{\u00a0\u00a0 \u00a0<br \/>\n\u00a0\u00a0\u00a0 \u00a0delete ui;<br \/>\n}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u5a92\u4f53<br \/>\n\u4e00\u3001\u9879\u76ee\u52a0\u00a0<br \/>\nQT \u00a0 \u2026\u2026 multimedia multimediaWidgets<br \/>\n\u4e8c\u3001\u521b\u5efa\u4e00\u4e2aQWidget\u9879\u76ee<br \/>\n\u4e09\u3001\u5e03\u5c40\u4e00\u4e2a\u754c\u9762<br \/>\n\u6dfb\u52a0\u4e00\u4e2a\u663e\u793a\u89c6\u9891\u7684\u5bb9\u5668Widget\u5bb9\u5668\u5230\u754c\u9762\u6765\u3002playWindow<br \/>\n\u6dfb\u52a0\u64ad\u653e&#xff0c;\u6682\u505c&#xff0c;\u7ed3\u675f&#xff0c;\u5feb\u8fd1&#xff0c;\u5feb\u9000&#xff0c;\u7b49\u6309\u94aeQPushButton<br \/>\nbtnPlay,btnPause,btnEnd,btnFront,btnBack\u7b49\u547d\u540d<br \/>\n\u6dfb\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761QSlider\u5f53\u64ad\u653e\u8fdb\u5ea6\u6761&amp;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[218,190],"topic":[],"class_list":["post-61989","post","type-post","status-publish","format-standard","hentry","category-server","tag-qt","tag-190"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/61989.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u591a\u5a92\u4f53 \u4e00\u3001\u9879\u76ee\u52a0\u00a0 QT \u00a0 \u2026\u2026 multimedia multimediaWidgets \u4e8c\u3001\u521b\u5efa\u4e00\u4e2aQWidget\u9879\u76ee \u4e09\u3001\u5e03\u5c40\u4e00\u4e2a\u754c\u9762 \u6dfb\u52a0\u4e00\u4e2a\u663e\u793a\u89c6\u9891\u7684\u5bb9\u5668Widget\u5bb9\u5668\u5230\u754c\u9762\u6765\u3002playWindow \u6dfb\u52a0\u64ad\u653e&#xff0c;\u6682\u505c&#xff0c;\u7ed3\u675f&#xff0c;\u5feb\u8fd1&#xff0c;\u5feb\u9000&#xff0c;\u7b49\u6309\u94aeQPushButton btnPlay,btnPause,btnEnd,btnFront,btnBack\u7b49\u547d\u540d \u6dfb\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761QSlider\u5f53\u64ad\u653e\u8fdb\u5ea6\u6761&amp;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/61989.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-18T18:17:53+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/61989.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/61989.html\",\"name\":\"QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-01-18T18:17:53+00:00\",\"dateModified\":\"2026-01-18T18:17:53+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/61989.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/61989.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/61989.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"QT\u8fdb\u9636\u65e5\u8bb0004\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/61989.html","og_locale":"zh_CN","og_type":"article","og_title":"QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u591a\u5a92\u4f53 \u4e00\u3001\u9879\u76ee\u52a0\u00a0 QT \u00a0 \u2026\u2026 multimedia multimediaWidgets \u4e8c\u3001\u521b\u5efa\u4e00\u4e2aQWidget\u9879\u76ee \u4e09\u3001\u5e03\u5c40\u4e00\u4e2a\u754c\u9762 \u6dfb\u52a0\u4e00\u4e2a\u663e\u793a\u89c6\u9891\u7684\u5bb9\u5668Widget\u5bb9\u5668\u5230\u754c\u9762\u6765\u3002playWindow \u6dfb\u52a0\u64ad\u653e&#xff0c;\u6682\u505c&#xff0c;\u7ed3\u675f&#xff0c;\u5feb\u8fd1&#xff0c;\u5feb\u9000&#xff0c;\u7b49\u6309\u94aeQPushButton btnPlay,btnPause,btnEnd,btnFront,btnBack\u7b49\u547d\u540d \u6dfb\u52a0\u4e00\u4e2a\u8fdb\u5ea6\u6761QSlider\u5f53\u64ad\u653e\u8fdb\u5ea6\u6761&amp;","og_url":"https:\/\/www.wsisp.com\/helps\/61989.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-01-18T18:17:53+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"1 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/61989.html","url":"https:\/\/www.wsisp.com\/helps\/61989.html","name":"QT\u8fdb\u9636\u65e5\u8bb0004 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-01-18T18:17:53+00:00","dateModified":"2026-01-18T18:17:53+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/61989.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/61989.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/61989.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"QT\u8fdb\u9636\u65e5\u8bb0004"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/61989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=61989"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/61989\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=61989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=61989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=61989"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=61989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}