{"id":12637,"date":"2024-03-26T16:36:37","date_gmt":"2024-03-26T08:36:37","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=12637"},"modified":"2024-03-26T18:02:32","modified_gmt":"2024-03-26T10:02:32","slug":"qt%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%93%8d%e4%bd%9c%e6%80%bb%e7%bb%93","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=12637","title":{"rendered":"Qt\u5b57\u7b26\u4e32\u64cd\u4f5c\u603b\u7ed3"},"content":{"rendered":"<h3>\u5b57\u7b26\u4e32\u62fc\u63a5<\/h3>\n<ul>\n<li>\u4f7f\u7528\u52a0\u53f7(+)\u64cd\u4f5c\u7b26\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">QString str1 = &quot;Hello&quot;;\nQString str2 = &quot;World&quot;;\nQString str3 = str1 + &quot; &quot; + str2; \/\/ str3 = &quot;Hello World&quot;<\/code><\/pre>\n<ul>\n<li>\u4f7f\u7528append()\u65b9\u6cd5\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">QString str1 = &quot;Hello&quot;;\nQString str2 = &quot;World&quot;;\nstr1.append(&quot; &quot;);\nstr1.append(str2); \/\/ str1 = &quot;Hello World&quot;<\/code><\/pre>\n<ul>\n<li>\u4f7f\u7528sprintf()\u65b9\u6cd5\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">QString str1 = &quot;Hello&quot;;\nQString str2 = &quot;World&quot;;\nQString str3;\nstr3.sprintf(&quot;%s %s&quot;, str1.toStdString().c_str(), str2.toStdString().c_str()); \/\/ str3 = &quot;Hello World&quot;<\/code><\/pre>\n<ul>\n<li>\u4f7f\u7528arg()\u65b9\u6cd5\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">QString str1 = &quot;Hello&quot;;\nQString str2 = &quot;World&quot;;\nQString str3 = QString(&quot;%1 %2&quot;).arg(str1).arg(str2); \/\/ str3 = &quot;Hello World&quot;<\/code><\/pre>\n<ul>\n<li>\u4f7f\u7528QString::arg()\u65b9\u6cd5\uff1a<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">QString str1 = &quot;Hello&quot;;\nQString str2 = &quot;World&quot;;\nQString str3 = str1 + &quot; &quot; + str2; \/\/ str3 = &quot;Hello World&quot;<\/code><\/pre>\n<h3>QString\u4e0eQByteArray\u4e92\u76f8\u8f6c\u5316\u65b9\u6cd5<\/h3>\n<ul>\n<li>QString\u8f6cQByteArray\u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">\/\/Qt5.9.6\nQString str(&quot;Hello World&quot;); \nQByteArray bytes = str.toUtf8(); \/\/ QString\u8f6cQByteArray\u65b9\u6cd51\n\nQString str(&quot;Hello World&quot;); \nQByteArray bytes = str.toLatin1();  \/\/ QString\u8f6cQByteArray\u65b9\u6cd52\n<\/code><\/pre>\n<ul>\n<li>QByteArray\u8f6cQString\u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\">\/\/Qt5.9.6\n    QByteArray bytes(&quot;Hello World&quot;);\n    QString str = bytes;               \/\/ QByteArray\u8f6cQString\u65b9\u6cd51\n\n    QByteArray bytes(&quot;Hello World&quot;);\n    QString str;\n    str.prepend(bytes);                \/\/ QByteArray\u8f6cQString\u65b9\u6cd52\n\n    qDebug() &lt;&lt; string;<\/code><\/pre>\n<h3>\u5b57\u7b26\u4e32\u622a\u53d6<\/h3>\n<p><a href=\"https:\/\/blog.csdn.net\/qq_43058397\/article\/details\/111409207\">https:\/\/blog.csdn.net\/qq_43058397\/article\/details\/111409207<\/a><\/p>\n<button class=\"simplefavorite-button\" data-postid=\"12637\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>\u5b57\u7b26\u4e32\u62fc\u63a5 \u4f7f\u7528\u52a0\u53f7(+)\u64cd\u4f5c\u7b26\uff1a QString str1 = &quot;Hello&quot; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[971],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/12637"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12637"}],"version-history":[{"count":3,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/12637\/revisions"}],"predecessor-version":[{"id":12647,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/12637\/revisions\/12647"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12637"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}