Delphi列出枚举系统安装的所有打印机名称，会下一步打印做准备，当然，本程序不包括打印功能，仅是检测获取到所使用的打印机型号、名称等信息，如图所示，可得到安装的三台打印机型号。-Delphi lists enumerate all installed printer name, the next step will be to prepare for print, of course, this does not include the print function, just to get