Send text directply to EPSON printer using win32 API

使用VS2012 C#语言，windows应用程序类别，利用win32 API对打印机进行监控，并实时输出打印信息到窗口-Based on VS2012 software, C#programming language. Use the win32 API monitoring the printer status, and output the imformation to the comobox

C#实时打印机状态检查示例，通过调用win32 API实现-C# example of real-time printer status check by calling the win32 API to achieve