i = MsgBox("退纸吗?", vbYesNo + vbDefaultButton1, "提示信息")
If i = vbYes Then
For k = 1 To 2
printdata$ = Chr$(27) & Chr$(118)
Call WritePrinter(hPrinter, ByVal printdata$, LenB(StrConv(printdata$, vbFromUnicode)), 0)
printdata$ = Chr$(10)
Call WritePrinter(hPrinter, ByVal printdata$, LenB(StrConv(printdata$, vbFromUnicode)), 0)
Next k
End If