PosPrinter.PrintBarCode，PosPrinter.PrintBitmap不工作，而PrintNormal在工作

Question

我已经创建了一个ActiveX控件，其中包含处理打印机(星形TSP100)的所有方法，如实例化、打开打印机等。该ActiveX正在com中注册。当我通过javascript使用打印机方法时，除了PrintBarCode和PrintBitmap方法和抛出错误之外，所有的方法都工作得很好。

对于我使用过的位图：

printer.PrintBitmap(PrinterStation.Receipt, path, percentWidth * lineWidth / 100, PosPrinter.PrinterBitmapCenter);

对于条形码:-

printer.PrintBarCode(PrinterStation.Receipt, code, BarCodeSymbology.Code93, 80, (int)(0.9 * lineWidth), PosPrinter.PrinterBarCodeCenter, BarCodeTextPosition.Below);

尽管这两种方法也在visual studio的调试模式下工作。但是在创建安装程序并将其安装到系统中之后，这两个程序就不能工作了。

错误是:-

Microsoft.PointOfService.PosControlException: Method PrintBarCode threw an exception.  Attempt was made to perform an illegal or unsupported operation with the device, or an invalid parameter value was used.
   at Microsoft.PointOfService.Legacy.LegacyProxy.ThrowLegacyMethodException(String methodName, Int32 ResultCode, Exception e)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethod(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheckImpl(String methodName, Object[]& parameters, Boolean[] byRef)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheckImpl(String methodName, Object[] parameters)
   at Microsoft.PointOfService.Legacy.LegacyProxy.InvokeMethodAndCheck(String methodName, Object param1, Object param2, Object param3, Object param4, Object param5, Object param6, Object param7)
   at Microsoft.PointOfService.Legacy.LegacyPosPrinter.PrintBarCode(PrinterStation station, String data, BarCodeSymbology symbology, Int32 height, Int32 width, Int32 alignment, BarCodeTextPosition textPosition)
   at xyx.testclass.PrintBarCode(String code)
ErrorCode: Illegal
ErrorCodeExtended: 0

Answer 1

我也有同样的问题，对于位图，我有一个解决方法：

printer.PrintBitmap(PrinterStation.Receipt, path, PosPrinter.PrinterBitmapAsIs, PosPrinter.PrinterBitmapCenter);

可能打印机无法缩放位图。但由于在将位图发送到打印机之前很容易缩放，我认为这是一个很好的解决方法。

对于条形码问题，我只能说，我使用了错误的BarCodeSymbology (Ean13S而不是EanJan13)。如果我有进一步的见解，我会在这里分享。

Answer 2

dlg：是否打开文件对话框

cbAlignment：包含三个值的组合框: Left、Center、Right。

tbWidth和tbWidth：适用于打印大小

cbTextPosition：用于文本位置

以下是屏幕截图：

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我有Epson-T20，代码对我很好：

//In the loading of the form : to init cbTextPosition
cbTextPosition.Items.Clear();
cbTextPosition.Items.AddRange(Enum.GetNames(typeof (BarCodeTextPosition)));

和打印：

try
            {
                //Show the Open File Dialog Box
                OpenFileDialog dlg = new OpenFileDialog();
                dlg.Filter = "Image files|*.bmp;*.gif;*.jpg";

                //Try It First With Monochrome Bmp Image : try it with 384x384 px
                if (dlg.ShowDialog() == DialogResult.OK)
                {
                    //Init your stuff here
                    PosExplorer explorer;
                    DeviceInfo _device;
                    PosPrinter _oposPrinter;

                    explorer = new PosExplorer();
                    _device = explorer.GetDevice(DeviceType.PosPrinter, "T20PRINTER");

                    _oposPrinter = (PosPrinter) explorer.CreateInstance(_device);
                    _oposPrinter.Open();
                    if (!_oposPrinter.Claimed)
                    {
                        _oposPrinter.Claim(5000);
                        _oposPrinter.DeviceEnabled = true;
                        PrinterStation CurrentStation = PrinterStation.Receipt;

                        //This is a Header :
                        _oposPrinter.PrintNormal(PrinterStation.Receipt, "Here is your LOGO : ");

                        //Printing Your Logo :
                        int alignment; 
                        if (cbAlignment.Text == "Left")
                            alignment = PosPrinter.PrinterBarCodeLeft;
                        else if (cbAlignment.Text == "Center")
                            alignment = PosPrinter.PrinterBarCodeCenter;
                        else if (cbAlignment.Text == "Right")
                            alignment = PosPrinter.PrinterBarCodeRight;
                        else
                            alignment = int.Parse(cbAlignment.Text, System.Globalization.CultureInfo.CurrentCulture);

                        //Print it : you can try 384px for real size in tbWidth
                        _oposPrinter.PrintBitmap(
                            CurrentStation,
                            dlg.FileName,
                            int.Parse(tbWidth.Text, System.Globalization.CultureInfo.CurrentCulture),
                            alignment);

                        //Cutting your Paper :
                        _oposPrinter.CutPaper(95);
                    }

                }

            }
            catch (Exception c)
            {
                MessageBox.Show(c.Message);
            }

因为Codebar从来没有尝试过，对不起，如果我发现了什么，我会告诉你的，祝你们好运。