关于一个精确定位发票打印程序代码的详细例子

usb打印机的端口定位,本程序通过遍历设备找到USB打印机，根据注册表确定端口与状态-usb printer port positioning this program find a USB printer by traversing devices , according to the registry to determine the port and status

VC++调试技术，写代码让VC++程序Release版时漰溃生成dump文件，根据dump文件来定位分析bug-VC++ debugging techniques, write the code to get the VC++ program Release version buckle break to generate dump files, dump files according to the localization analysis of bug