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qt tabbar怎样设置标签边框

在Qt中，为TabBar设置标签边框可以通过以下步骤实现：创建自定义TabBar类：首先，你需要创建一个继承自QTabBar的自定义类。在这个类中，你可以重写paintEvent(QPaintEvent*)方法来自定义TabBar的绘制方式。在自定义TabBar类中绘制边框：在paintEvent方法中，你可以使用QP...

开发笔记 ·2024-11-20

layui table 上面的switch开关切换，并获取表格里所有数据

场景需求：在layui.table上面渲染后的列表上面加一个switch开关，监听switch开关的动作，实现本列数据的状态切换！数据表格配置参数 layui.table.options.cols 配置如下、重点看 state 那一行 table.render({ele...

开发笔记 ·2024-09-29

layui table展示页表格中加入下拉选择框

layui展示页表格中加入下拉选择框，最终实现效果图：1.在初始化表格的列cols中添加：{field:'paid',sort:true,title:'付款状态',align:"center",templet:function(d){return'<selectname="paid"class="sel_xlk"...

开发笔记 ·2024-09-29

linux定时计划任务Crontab运行php

使用Crontab定时执行php脚本文件1.安装crontabyuminstallcrontabs说明：/sbin/servicecrondstart//启动服务/sbin/servicecrondstop//关闭服务/sbin/servicecrondrestart//重启服务/sbin/servicecrondre...

开发笔记 ·2024-08-27

mysql innodb 独立表空间 innodb_file_per_table

5.6.6以上版本默认开启my.cnfinnodb_file_per_table=ON;命令行setglobalinnodb_file_per_table=ON;查看showvariableslike'%per_table%';...

开发笔记 ·2024-07-09

普通table表格样式大全

普通table表格样式及代码大全(全)(一)单实线边框表格 <TABLEstyle="BORDER-COLLAPSE:collapse"borderColor=#000000height=40cellPadding=1width=250align=centerborder=1>...

开发笔记 ·2024-06-16

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: Too many connections

最简单的办法是因为你的my.ini中设定的并发连接数太少或者系统繁忙导致连接数被占满解决方式：打开MySQL安装目录打开MY.INI找到max_connections默认是100.--实例WINDOWS解决mysql Errno.:1040错误XXXXinfo:CannotconnecttoMySQLserv...

开发笔记 ·2024-04-29

ORA-64143: Can only share an existing XMLIndex table with an XMLTYPE column.

文档解释ORA-64143:CanonlyshareanexistingXMLIndextablewithanXMLTYPEcolumn.Cause:AnattemptwasmadetoshareatablewithoutanXMLTYPEcolumn.Action:DropthegroupcontainingtheX...

IT技术学习 ·2023-07-28

ORA-38471: ROWIDs for table aliases cannot be null

文档解释ORA-38471:ROWIDsfortablealiasescannotbenullCause:Anattemptwasmadetopassanullvalueforthetablealiasattributeinthedataitem,whichisnotpermitted.Action:Passavali...

IT技术学习 ·2023-07-28

ORA-39034: Table string does not exist.

文档解释ORA-39034:Tablestringdoesnotexist.Cause:TheuserreferencedatableinanAPIthatdidnotexist.Action:CorrecttablenameandretryAPI.ORA-39034:Tablestringdoesnotexist.这...

IT技术学习 ·2023-07-28

ORA-32415: fast refreshable remote materialized view on a detail table with commit SCN-based materialized view log is not supported

文档解释ORA-32415:fastrefreshableremotematerializedviewonadetailtablewithcommitSCN-basedmaterializedviewlogisnotsupportedCause:Thematerializedviewcreationfailedbeca...

IT技术学习 ·2023-07-28

ORA-25100: TABLESPACE option can only be used with ALTER INDEX REBUILD

文档解释ORA-25100:TABLESPACEoptioncanonlybeusedwithALTERINDEXREBUILDCause:TheTABLESPACEoptiontoALTERINDEXwasusedwithouttheREBUILDoption.Action:UseALTERINDEXREBUILDT...

IT技术学习 ·2023-07-28

ORA-44742: Cannot alter columns of a table that is shared by other group(s).

文档解释ORA-44742:Cannotaltercolumnsofatablethatissharedbyothergroup(s).Cause:Anattemptwasmadetoaddcolumnsto,modifycolumnsof,ordropcolumnsfromatablesharedbyothergro...

IT技术学习 ·2023-07-28

ORA-38734: Flashback log is inconsistent; belongs to another database.

文档解释ORA-38734:Flashbacklogisinconsistent;belongstoanotherdatabase.Cause:ThedatabaseIDintheflashbackdatabaselogfiledidnotmatchthedatabaseIDinthecontrolfile.Actio...

IT技术学习 ·2023-07-28

ORA-39907: Index string.string in tablespace string points to table string.string in tablespace string.

文档解释ORA-39907:Indexstring.stringintablespacestringpointstotablestring.stringintablespacestring.Cause:Informationalmessagetodescribeafailureduringtransportableco...

IT技术学习 ·2023-07-28