{"id":2583,"date":"2025-05-22T00:00:18","date_gmt":"2025-05-21T16:00:18","guid":{"rendered":"https:\/\/www.wunen.com\/index.php\/2025\/05\/22\/%e7%94%a8qt5%e5%81%9a%e4%b8%80%e4%b8%aa%e5%bd%b1%e9%9f%b3%e6%92%ad%e6%94%be%e8%bd%af%e4%bb%b6%ef%bc%883%ef%bc%89-%e4%bd%bf%e7%94%a8sqlite%e8%bf%9b%e8%a1%8c%e7%99%bb%e9%99%86%e6%b3%a8\/"},"modified":"2025-05-22T00:00:18","modified_gmt":"2025-05-21T16:00:18","slug":"%e7%94%a8qt5%e5%81%9a%e4%b8%80%e4%b8%aa%e5%bd%b1%e9%9f%b3%e6%92%ad%e6%94%be%e8%bd%af%e4%bb%b6%ef%bc%883%ef%bc%89-%e4%bd%bf%e7%94%a8sqlite%e8%bf%9b%e8%a1%8c%e7%99%bb%e9%99%86%e6%b3%a8","status":"publish","type":"post","link":"http:\/\/www.wunen.com\/index.php\/2025\/05\/22\/%e7%94%a8qt5%e5%81%9a%e4%b8%80%e4%b8%aa%e5%bd%b1%e9%9f%b3%e6%92%ad%e6%94%be%e8%bd%af%e4%bb%b6%ef%bc%883%ef%bc%89-%e4%bd%bf%e7%94%a8sqlite%e8%bf%9b%e8%a1%8c%e7%99%bb%e9%99%86%e6%b3%a8\/","title":{"rendered":"\u7528Qt5\u505a\u4e00\u4e2a\u5f71\u97f3\u64ad\u653e\u8f6f\u4ef6\uff083\uff09\u2014\u2014\u4f7f\u7528sqlite\u8fdb\u884c\u767b\u9646\u6ce8\u518c"},"content":{"rendered":"<div class=\"article_content clearfix\" id=\"article_content\">\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/kdoc_html_views-1a98987dfd.css\" rel=\"stylesheet\"\/>\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/ck_htmledit_views-704d5b9767.css\" rel=\"stylesheet\"\/>\n<div class=\"markdown_views prism-atom-one-dark\" id=\"content_views\">\n  <svg style=\"display: none;\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n   <path d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" stroke-linecap=\"round\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\">\n   <\/path>\n  <\/svg><\/p>\n<h3>\n   <a id=\"Qt53sqlite_0\"><br \/>\n   <\/a><br \/>\n   \u7528Qt5\u505a\u4e00\u4e2a\u5f71\u97f3\u64ad\u653e\u8f6f\u4ef6\uff083\uff09\u2014\u2014\u4f7f\u7528sqlite\u8fdb\u884c\u767b\u9646\u6ce8\u518c<br \/>\n  <\/h3>\n<h3>\n   <a id=\"1_2\"><br \/>\n   <\/a><br \/>\n   1.\u5148\u770b\u6548\u679c<br \/>\n  <\/h3>\n<\/p>\n<blockquote>\n<p>\n    https:\/\/blog.csdn.net\/CASTANEA\/article\/details\/80356653\n   <\/p>\n<\/blockquote>\n<h3>\n   <a id=\"2_12\"><br \/>\n   <\/a><br \/>\n   2.\u5b9e\u73b0\uff08\u770b\u6e05\u695a\u590d\u5236\u54c8\u6709\u4e9b\u4e1c\u897f\u4e0d\u662f\u8fd9\u4e00\u5757\u7684\uff09<br \/>\n  <\/h3>\n<p>\n   \u9996\u5148\u5728.pro\u6587\u4ef6\u4e2d \u5bfc\u5165sql\u5e93<br \/>\n   \n  <\/p>\n<pre><code class=\"prism language-cpp\"><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">\"widget.h\"<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">\"reg.h\"<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">\"home.h\"<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;QApplication&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;QSqlDatabase&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QDebug&gt;<\/span><\/span>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> argc<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>argv<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    <span class=\"token comment\">\/\/\u521b\u5efa\u6570\u636e\u5e93<\/span>\n    QSqlDatabase db <span class=\"token operator\">=<\/span><span class=\"token class-name\">QSqlDatabase<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">addDatabase<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"QSQLITE\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token comment\">\/\/\u8bbe\u7f6e\u6570\u636e\u5e93\u540d\u79f0<\/span>\n    db<span class=\"token punctuation\">.<\/span><span class=\"token function\">setDatabaseName<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"pwd.db\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token comment\">\/\/\u6253\u5f00\u6570\u636e\u5e93<\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span><span class=\"token function\">open<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n         <span class=\"token function\">qDebug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">\"open suc\"<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n         <span class=\"token function\">qDebug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">\"open fail\"<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token comment\">\/\/\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u5e93\u8868<\/span>\n    QString cmd<span class=\"token operator\">=<\/span> <span class=\"token string\">\"create table if not exists userinfo(username varchar(64),password varchar(64))\"<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token comment\">\/\/\u6267\u884csql\u8bed\u53e5<\/span>\n    QSqlQuery query<span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>query<span class=\"token punctuation\">.<\/span><span class=\"token function\">exec<\/span><span class=\"token punctuation\">(<\/span>cmd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token function\">qDebug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">\"exec suc\"<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token function\">qDebug<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&lt;&lt;<\/span><span class=\"token string\">\"exec fail\"<\/span><span class=\"token punctuation\">;<\/span>\n\n    <span class=\"token punctuation\">}<\/span>\n\n    QApplication <span class=\"token function\">a<\/span><span class=\"token punctuation\">(<\/span>argc<span class=\"token punctuation\">,<\/span> argv<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    Widget w<span class=\"token punctuation\">;<\/span>\n    w<span class=\"token punctuation\">.<\/span><span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">return<\/span> a<span class=\"token punctuation\">.<\/span><span class=\"token function\">exec<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n\n<span class=\"token punctuation\">}<\/span>\n\n<\/code><\/pre>\n<p>\n   \u4e4b\u540e\u5728\u6ce8\u518c\u7684reg.h\u6587\u4ef6\u4e2d \u5305\u62ecQSqlDatabase\uff1bQSqlQuery\uff1bQSqlTableModel\n  <\/p>\n<pre><code class=\"prism language-cpp\"><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QDialog&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QSqlDatabase&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QDebug&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QString&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QSqlQuery&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QMessageBox&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QSqlTableModel&gt;<\/span><\/span>\n\n<span class=\"token keyword\">namespace<\/span> Ui <span class=\"token punctuation\">{<!-- --><\/span>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">reg<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">reg<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">QDialog<\/span><\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    Q_OBJECT\n\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span>\n    <span class=\"token keyword\">explicit<\/span> <span class=\"token function\">reg<\/span><span class=\"token punctuation\">(<\/span>QWidget <span class=\"token operator\">*<\/span>parent <span class=\"token operator\">=<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token operator\">~<\/span><span class=\"token function\">reg<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n<span class=\"token keyword\">private<\/span> slots<span class=\"token operator\">:<\/span>\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_pushButton_2_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u53d6\u6d88<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_pushButton_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u6ce8\u518c<\/span>\n\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span>\n    Ui<span class=\"token double-colon punctuation\">::<\/span>reg <span class=\"token operator\">*<\/span>ui<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\n   \u5728.cpp\u6587\u4ef6\u4e2d\u8fdb\u884c\u5b9e\u73b0\n  <\/p>\n<pre><code class=\"prism language-cpp\"><span class=\"token keyword\">void<\/span> reg<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_pushButton_2_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token comment\">\/\/\u53d6\u6d88\u6309\u94ae<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n\n<span class=\"token keyword\">void<\/span> reg<span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_pushButton_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token comment\">\/\/\u6ce8\u518c\u6309\u94ae<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    QString username<span class=\"token operator\">=<\/span>ui<span class=\"token operator\">-&gt;<\/span>userEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u83b7\u53d6\u4e24\u4e2aedit\u4e2d\u7684\u5b57\u7b26\u4e32<\/span>\n    QString password<span class=\"token operator\">=<\/span>ui<span class=\"token operator\">-&gt;<\/span>passEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    QString password1<span class=\"token operator\">=<\/span>ui<span class=\"token operator\">-&gt;<\/span>pwdEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>password<span class=\"token operator\">==<\/span>password1<span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n        QString cmd<span class=\"token operator\">=<\/span><span class=\"token function\">QString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"insert into userinfo values('%1','%2')\"<\/span><span class=\"token punctuation\">)<\/span>\n                <span class=\"token punctuation\">.<\/span><span class=\"token function\">arg<\/span><span class=\"token punctuation\">(<\/span>username<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token function\">arg<\/span><span class=\"token punctuation\">(<\/span>password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        QSqlQuery query<span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>query<span class=\"token punctuation\">.<\/span><span class=\"token function\">exec<\/span><span class=\"token punctuation\">(<\/span>cmd<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>\n        <span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token class-name\">QMessageBox<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">information<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u6ce8\u518c\u63d0\u793a\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u6ce8\u518c\u6210\u529f\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n        <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n            <span class=\"token class-name\">QMessageBox<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">information<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u6ce8\u518c\u63d0\u793a\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u6ce8\u518c\u5931\u8d25\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token class-name\">QMessageBox<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">information<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u6ce8\u518c\u63d0\u793a\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u4e24\u6b21\u5bc6\u7801\u8f93\u5165\u4e0d\u4e00\u81f4\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<\/code><\/pre>\n<p>\n   \u4e4b\u540e\u5728weight.h\u6587\u4ef6\u4e2d\n  <\/p>\n<pre><code class=\"prism language-cpp\"><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;QWidget&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;QSqlDatabase&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QDebug&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QString&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QSqlQuery&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QMessageBox&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QSqlTableModel&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;QPoint&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;reg.h&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;home.h&gt;<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span><span class=\"token string\">&lt;showplay.h&gt;<\/span><\/span>\nQT_BEGIN_NAMESPACE\n<span class=\"token keyword\">namespace<\/span> Ui <span class=\"token punctuation\">{<!-- --><\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span>\nQT_END_NAMESPACE\n\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Widget<\/span> <span class=\"token operator\">:<\/span> <span class=\"token base-clause\"><span class=\"token keyword\">public<\/span> <span class=\"token class-name\">QWidget<\/span><\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    Q_OBJECT\n\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span>\n    <span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span>QWidget <span class=\"token operator\">*<\/span>parent <span class=\"token operator\">=<\/span> <span class=\"token keyword\">nullptr<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token operator\">~<\/span><span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">bool<\/span> bPressFlag<span class=\"token punctuation\">;<\/span>\n    QPoint beginDrag<span class=\"token punctuation\">;<\/span>\n<span class=\"token keyword\">private<\/span> slots<span class=\"token operator\">:<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">mousePressEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u9f20\u6807\u6309\u538b\u4e8b\u4ef6\u6355\u6349<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">mouseReleaseEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u9f20\u6807\u91ca\u653e\u4e8b\u4ef6\u6355\u6349<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">mouseMoveEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u9f20\u6807\u79fb\u52a8\u4e8b\u4ef6\u6355\u6349<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_pushButton_3_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u5173\u95ed\u754c\u9762<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_reg_btn_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u6ce8\u518c<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_login_btn_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u767b\u5f55<\/span>\n\n    <span class=\"token keyword\">void<\/span> <span class=\"token function\">on_pushButton_2_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u7f29\u5c0f<\/span>\n\n<span class=\"token keyword\">private<\/span><span class=\"token operator\">:<\/span>\n    Ui<span class=\"token double-colon punctuation\">::<\/span>Widget <span class=\"token operator\">*<\/span>ui<span class=\"token punctuation\">;<\/span>\n    reg <span class=\"token operator\">*<\/span>reg1<span class=\"token operator\">=<\/span><span class=\"token keyword\">new<\/span> reg<span class=\"token punctuation\">;<\/span>\n    home <span class=\"token operator\">*<\/span>home1<span class=\"token operator\">=<\/span><span class=\"token keyword\">new<\/span> home<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n<\/code><\/pre>\n<p>\n   \u7136\u540e\u8fdb\u884c\u5b9e\u73b0\n  <\/p>\n<pre><code class=\"prism language-cpp\"><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">\"widget.h\"<\/span><\/span>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">\"ui_widget.h\"<\/span><\/span>\n\n<span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span>QWidget <span class=\"token operator\">*<\/span>parent<span class=\"token punctuation\">)<\/span>\n    <span class=\"token operator\">:<\/span> <span class=\"token function\">QWidget<\/span><span class=\"token punctuation\">(<\/span>parent<span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">,<\/span> <span class=\"token function\">ui<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">new<\/span> Ui<span class=\"token double-colon punctuation\">::<\/span>Widget<span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    ui<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setupUi<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token comment\">\/\/\u628a\u7a97\u53e3\u8fb9\u6846\u53bb\u9664   \u8fd9\u662f\u53bb\u9664\u539f\u6765\u7684\u5173\u95ed\u8fb9\u6846<\/span>\n    <span class=\"token function\">setWindowFlags<\/span><span class=\"token punctuation\">(<\/span>Qt<span class=\"token double-colon punctuation\">::<\/span>FramelessWindowHint <span class=\"token operator\">|<\/span> <span class=\"token function\">windowFlags<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token comment\">\/\/\u628a\u7a97\u53e3\u80cc\u666f\u8bbe\u7f6e\u4e3a\u900f\u660e;<\/span>\n    <span class=\"token function\">setAttribute<\/span><span class=\"token punctuation\">(<\/span>Qt<span class=\"token double-colon punctuation\">::<\/span>WA_TranslucentBackground<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token operator\">~<\/span><span class=\"token function\">Widget<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    <span class=\"token keyword\">delete<\/span> ui<span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_pushButton_3_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n   <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_reg_btn_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    ui<span class=\"token operator\">-&gt;<\/span>nameEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    ui<span class=\"token operator\">-&gt;<\/span>pwdEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">clear<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    reg1<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n\n<span class=\"token punctuation\">}<\/span>\n\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_login_btn_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    QString username<span class=\"token operator\">=<\/span>ui<span class=\"token operator\">-&gt;<\/span>nameEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    QString password<span class=\"token operator\">=<\/span>ui<span class=\"token operator\">-&gt;<\/span>pwdEdit<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">text<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n\n    QSqlTableModel <span class=\"token operator\">*<\/span>model <span class=\"token operator\">=<\/span><span class=\"token keyword\">new<\/span> QSqlTableModel<span class=\"token punctuation\">;<\/span>\n    model<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setTable<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"userinfo\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    model<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setFilter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">QString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"username='%1' and password='%2'\"<\/span><span class=\"token punctuation\">)<\/span>\n                     <span class=\"token punctuation\">.<\/span><span class=\"token function\">arg<\/span><span class=\"token punctuation\">(<\/span>username<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">.<\/span><span class=\"token function\">arg<\/span><span class=\"token punctuation\">(<\/span>password<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    model<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">select<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token comment\">\/\/\u68c0\u6d4b\u662f\u5426\u67e5\u8be2\u5230\u6570\u636e<\/span>\n    <span class=\"token keyword\">int<\/span> row <span class=\"token operator\">=<\/span>model<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">rowCount<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>row<span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n         <span class=\"token class-name\">QMessageBox<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">information<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u767b\u5f55\u63d0\u793a\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u767b\u5f55\u6210\u529f\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n         <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">close<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n         home1<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">show<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n        <span class=\"token class-name\">QMessageBox<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">information<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">this<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u767b\u5f55\u63d0\u793a\"<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">\"\u767b\u5f55\u5931\u8d25\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token keyword\">delete<\/span> model<span class=\"token punctuation\">;<\/span>\n\n\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">on_pushButton_2_clicked<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    <span class=\"token keyword\">this<\/span><span class=\"token operator\">-&gt;<\/span><span class=\"token function\">setWindowState<\/span><span class=\"token punctuation\">(<\/span>Qt<span class=\"token double-colon punctuation\">::<\/span>WindowMinimized<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mousePressEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    bPressFlag <span class=\"token operator\">=<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span>\n    beginDrag <span class=\"token operator\">=<\/span> event<span class=\"token operator\">-&gt;<\/span><span class=\"token function\">pos<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token class-name\">QWidget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mousePressEvent<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mouseReleaseEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    bPressFlag <span class=\"token operator\">=<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token class-name\">QWidget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mouseReleaseEvent<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<span class=\"token keyword\">void<\/span> <span class=\"token class-name\">Widget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mouseMoveEvent<\/span><span class=\"token punctuation\">(<\/span>QMouseEvent <span class=\"token operator\">*<\/span>event<span class=\"token punctuation\">)<\/span>\n<span class=\"token punctuation\">{<!-- --><\/span>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>bPressFlag<span class=\"token punctuation\">)<\/span>\n    <span class=\"token punctuation\">{<!-- --><\/span>\n        QPoint <span class=\"token function\">relaPos<\/span><span class=\"token punctuation\">(<\/span><span class=\"token class-name\">QCursor<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">pos<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">-<\/span> beginDrag<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token function\">move<\/span><span class=\"token punctuation\">(<\/span>relaPos<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n    <span class=\"token class-name\">QWidget<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">mouseMoveEvent<\/span><span class=\"token punctuation\">(<\/span>event<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n<span class=\"token punctuation\">}<\/span>\n\n<\/code><\/pre>\n<\/p><\/div>\n<link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/markdown_views-a5d25dd831.css\" rel=\"stylesheet\"\/>\n <link 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