ini文件的写入，section节点的删除和添加，可以手动修改添加的键值-ini file is written, section delete and add nodes, you can manually add the key changes

一小段代码，直接连接打印机打印 这是一个按纽事件你加上去试试 ！实现窗体打印功能！ -A small section of code, directly connect the printer to print this is a button to add your event to try! The realization of form printing function!