C# (CSharp) SimplePOS.Printing InvoicePrinter示例

示例#1

 public static InvoicePrinter getInstance()
 {
     if (INSTANCE == null)
     {
         INSTANCE = new InvoicePrinter();
     }
     return(INSTANCE);
 }

示例#2

文件： InvoicePrinter.cs 项目： juehv/SPOS

 public static InvoicePrinter getInstance()
 {
     if (INSTANCE == null)
     {
         INSTANCE = new InvoicePrinter();
     }
     return INSTANCE;
 }