我们正在尝试将餐馆账单打印到POS打印机。我们在FLEX中设计了一个完整的a4尺寸的帐单，并设法将其打印到POS打印机。我知道这不是最好的做法。有人可以帮助我们，让我们知道最佳做法是什么。
以下是我们使用的代码。非常感谢一点帮助。
<?xml version="1.0" encoding="utf-8"?>
<mx:VBox xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:prints="printing.*"
xmlns:ProComp="ProComp.*"
xmlns:WrbComp="WrbComp.*"
width="580" height="338" creationComplete="onCreationComplete()" fontSize="4"
horizontalAlign="left" horizontalScrollPolicy="off"
implements="COM.pro.printing.IPrintableDocument" styleName="printPageStyle"
verticalScrollPolicy="off">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
<mx:NumberFormatter id="Rod2" precision="2" rounding="nearest" />
<mx:NumberFormatter id="Rod4" precision="4" rounding="nearest" />
<mx:NumberFormatter id="mxNumFormatter2" useThousandsSeparator="true" thousandsSeparatorFrom="," precision="2" decimalSeparatorFrom="." />
</fx:Declarations>
<fx:Script>
<![CDATA[
import COM.pro.printing.PrintPreviewControl;
import Common.*;
import WrbComp.BillCompKot;
import flashx.textLayout.conversion.ConversionType;
import flashx.textLayout.formats.Float;
import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.controls.AdvancedDataGrid;
import mx.controls.Alert;
import mx.core.Application;
import mx.events.PropertyChangeEvent;
import mx.messaging.SubscriptionInfo;
import mx.rpc.events.HeaderEvent;
import mx.rpc.mxml.Concurrency;
import mx.utils.StringUtil;
[Bindable] public var accounts:ArrayCollection;
[Bindable] public var currentPageNumber:Number = 1;
[Bindable] public var pageCount:Number = 1;
public var _parentObj:Object;
public var _HdrArrCol:ArrayCollection;
public var _DtlsArrCol:ArrayCollection;
static var gridheight:int=0;
public var _DtlsArrOrd:ArrayCollection;
public var _DtlsArrPrd:ArrayCollection;
public var items:Number;
public var qty:int;
public var Title:String = "";
public var TinNo:String = "";
public var Address1:String="";
public var Address2:String="";
public var Address3:String="";
public var PrintWidth:Number=0;
public var TitleFontSize:Number=0;
public var AddressFontsize:Number=0;
public var OtherFontsize:Number=0;
public var BillNoFontsize:Number=0;
public var BillTitleFontsize:Number=0;
var myXML:XMLDocument=new XMLDocument();
var GrnXML:XMLDocument=new XMLDocument();
public var Pnt:COM.pro.printing.PrintPreviewControl=new COM.pro.printing.PrintPreviewControl();
private function fakeData():ArrayCollection
{
var COUNT:int = 70;
var ar:Array = [];
for (var i:int=0; i<COUNT; ++i)
{
ar.push(
{
'account':i+1,
'control':COUNT-i-1,
'description':'Account ' + (i+1).toString()
}
);
}
return new ArrayCollection(ar);
}
private function ReadRep_XML()
{
// var file:File = new File(File.applicationDirectory.nativePath + "\\Config.xml");
// var fileStream:FileStream = new FileStream();
// fileStream.open(file,FileMode.READ)
// var Content:String=fileStream.readUTFBytes(fileStream.bytesAvailable)
// myXML.ignoreWhite=true;
// myXML.parseXML(Content);
}
private function onCreationComplete():void
{
if(_HdrArrCol.length > 0)
{
accounts = fakeData();
lbl_title1.text=_HdrArrCol[0].Title6;
lbl_title2.text=_HdrArrCol[0].Title7;
// lbl_Street.text=_HdrArrCol[0].Street;
// lbl_Addres.text=_HdrArrCol[0].Address;
// lbl_City.text=_HdrArrCol[0].City;
// lbl_title3.text=_HdrArrCol[0].City+" - "+_HdrArrCol[0].Pincode+", Ph : "+_HdrArrCol[0].PhoneNumber;
if(_HdrArrCol[0].TinNumber!="")
{
// lbl_title4.text="TIN No : "+_HdrArrCol[0].TinNumber;
}
// HT_CUSNAM.text = "Name : "+_HdrArrCol[0].GuestName;
// Cus_Add.text = "Address : "+_HdrArrCol[0].City;
// HT_DocNo.text = "Bill No:"+_HdrArrCol[0].BillNo;
// HT_Billtype.text = "Bill Type : "+_HdrArrCol[0].Type;
// Cus_Mob.text="Contact No : "+_HdrArrCol[0].MobileNo;
HT_Room.text="TableNo : "+_HdrArrCol[0].TableNo;
HT_DocDt.text ="Date : "+_HdrArrCol[0].Date;
var timestr:String=_HdrArrCol[0].Time;
HT_Time.text ="Time : "+timestr.substr(0,5);
// HT_User.text ="User : "+_HdrArrCol[0].UserName;
// HT_Pax.text = " Pax :"+_HdrArrCol[0].Pax;
// lbl_SubTotal.text = _HdrArrCol[0].SubTotal;
// lbl_ServiceTax.text=_HdrArrCol[0].ServiceTax;
//lbl_Rounding.text=_HdrArrCol[0].RoundingOff;
// lbl_totalround.text=_HdrArrCol[0].TotalRounded;
// lbl_Total.text=_HdrArrCol[0].Total;
lbl_KOT.text="K O T No : "+_HdrArrCol[0].KotNo;
lbl_Waiter.text = "Waiter : "+_HdrArrCol[0].WaiterName;
//lbl_Vat.text=_HdrArrCol[0].VatAmount;
//lbl_DiscountAmt.text=_HdrArrCol[0].DiscountAmt;
//lbl_total.text=_HdrArrCol[0].Gross;
//lbl_PackageCost.text=_HdrArrCol[0].PackageCost;
//lbl_ECESS.text=_HdrArrCol[0].ECESS;
// lbl_Total1.text=_HdrArrCol[0].Total;
}
else
{
Alert.show("No Data Available For Print");
}
fnPrintGridSetup();
layoutDocument();
}
private function focusOut_Round2(CtrlNm:String)
{
this[CtrlNm].text=Rod2.format(this[CtrlNm].text)
}
private function fnPrintGridSetup():void
{
//printADG.dataProvider = _DtlsArrCol;
var gridlen:int=_DtlsArrCol.length;
GridHeader.fnSetHeader("Item","Qty");
for(var linecnt:int=0;linecnt<gridlen; linecnt++){
var lineItem:BillCompKot= new BillCompKot();
lineItem.width = this.width-10;
lineItem.fnSetProps(_DtlsArrCol[linecnt].ProductName,
_DtlsArrCol[linecnt].Quantity);
lineItemGrp.addElement(lineItem);
items=linecnt+1;
qty= qty+int( _DtlsArrCol[linecnt].Quantity);
lineItemGrp.height = lineItemGrp.height + 20;
var str:String=_DtlsArrCol[linecnt].ProductName;
/*if(str.length>15)
{
lineItemGrp.height = lineItemGrp.height+70;
}
else
{
lineItemGrp.height = lineItemGrp.height+30;
}*/
}
this.height = 310+ lineItemGrp.height;
HT_ItemsNo.text="Items : "+String(gridlen);
}
private function layoutDocument():void
{
//printADG.percentHeight = 100;
validateNow();
calculatePageCount();
}
public function get desiredWidth():Number
{
return this.width;
}
public function get desiredHeight():Number
{
//var desiredheight:Number=Number(gridheight);
var desiredheight:Number=this.height;
return desiredheight;
}
public function set parentObj(obj:Object):void
{
_parentObj = obj;
}
public function set HdrArrCol(HAC:ArrayCollection):void
{
_HdrArrCol = HAC;
}
public function set DtlsArrCol(DAC:ArrayCollection):void
{
_DtlsArrCol = DAC;
var gridlen:int=_DtlsArrCol.length;
gridheight=400+(20*gridlen);
}
[Bindable(event="validPagesChanged")]
public function get validNextPage():Boolean
{
// FIXME PLEASE : sometimes printADG.validNextPage returns false
// even though it's not on the last page. Yet, if I disable the
// check for printADG.validNextPage and just use my calculated
// page numbers, everything displays and prints correctly, despite
// going beyond what it considers its last page.
//return printADG.validNextPage /* && currentPageNumber < pageCount*/;
return false
}
public function displayObject():DisplayObject
{
return this;
}
public function nextPage():void
{
// if ( pageCount != currentPageNumber + 1 )
// {
// xfooter.visible = false;
// }
// else
// {
// xfooter.visible = true;
// }
//printADG.nextPage();
currentPageNumber++;
/*if(currentPageNumber == 2)
{
removeHeaderFromLayout();
}*/
validateNow();
dispatchEvent(new Event("validPagesChanged"));
}
[Bindable(event="validPagesChanged")]
public function get validPreviousPage():Boolean
{
/* see note for validNextPage */
//return printADG.validPreviousPage /* && currentPageNumber > 1*/;
return false
}
public function previousPage():void
{
// if ( pageCount != currentPageNumber - 1 )
// {
// xfooter.visible = false;
// }
// else
// {
// xfooter.visible = true;
// }
//printADG.previousPage();
currentPageNumber--;
if (currentPageNumber == 1)
{
includeHeaderInLayout();
}
validateNow();
dispatchEvent(new Event("validPagesChanged"));
}
public function calculatePageCount():void
{
var count:Number=1;
/*
while(printADG.validNextPage)
{
count++;
if(count == 2)
{
removeHeaderFromLayout();
}
printADG.nextPage();
validateNow();
}*/
pageCount = count;
moveToFirstPage();
}
public function moveToFirstPage():void
{
currentPageNumber = 1;
//printADG.moveToFirstPage();
includeHeaderInLayout();
validateNow();
dispatchEvent(new Event("validPagesChanged"));
}
private function removeHeaderFromLayout():void
{
//header.includeInLayout = false;
// force a re-calc
//printADG.percentHeight = 99;
//printADG.percentHeight = 100;
}
private function includeHeaderInLayout():void
{
//header.includeInLayout = true;
// force a re-calc
//printADG.percentHeight = 99;
//printADG.percentHeight = 100;
}
]]>
</fx:Script>
<s:Group x="2" y="2" width="98%" height="338">
<s:VGroup height="333" width="100%" gap="3" y="0" x="23">
<s:VGroup width="98%" height="87" id="Header" horizontalAlign="center" verticalAlign="bottom" chromeColor="#060303" contentBackgroundColor="#FCFBFB" >
<s:Label id="lbl_title1" x="42" y="3" width="474" height="55" fontSize="60"
fontWeight="bold" textAlign="center" fontFamily="Times New Roman"/>
<s:Label id="lbl_title2" x="97" y="44" width="363" height="20" fontSize="25"
fontWeight="bold" textAlign="center" fontFamily="Times New Roman"/>
</s:VGroup>
<s:Line width="90%" height="0" >
<s:stroke>
<s:SolidColorStroke color="black" weight="2" />
</s:stroke>
</s:Line>
<s:VGroup width="98%" height="30" gap="1">
<s:HGroup height="100%" width="100%" gap="60">
<s:Label id="lbl_KOT" width="250" height="100%" fontSize="30" text="K O T No : 145263"
textAlign="left" verticalAlign="top" fontFamily="Times New Roman"/>
<s:Label id="HT_Room" width="180" verticalAlign="top" fontFamily="Times New Roman"
height="100%" fontSize="30" text="Table No : 14"/>
</s:HGroup>
</s:VGroup>
<s:VGroup width="98%" height="30" gap="1">
<s:HGroup height="100%" width="100%" gap="3">
<s:Label id = "HT_DocDt" width="307" verticalAlign="top" fontFamily="Times New Roman"
height="100%" textAlign="left" fontSize="30" text="Date : 14/02/2014"/>
<s:Label id = "HT_Time" width="210" verticalAlign="top" fontFamily="Times New Roman"
height="100%" textAlign="left" fontSize="30" text="Time : 15:20"/>
</s:HGroup>
</s:VGroup>
<s:VGroup width="98%" height="30" gap="1">
<s:HGroup height="100%" width="100%" gap="1">
<s:Label id="lbl_Waiter" width="315" height="100%" fontSize="30" fontFamily="Times New Roman"
textAlign="left" verticalAlign="top" text="Waiter : fgdhfghfghfg"/>
<s:Label id = "HT_ItemsNo" width="178" verticalAlign="top" fontFamily="Times New Roman"
height="100%" textAlign="left" fontSize="30" text="Items : 99"/>
</s:HGroup>
</s:VGroup>
<WrbComp:BillCompKot id="GridHeader" width="98%" height="30"/>
<s:Line width="90%" height="0" >
<s:stroke>
<s:SolidColorStroke color="black" weight="2" />
</s:stroke>
</s:Line>
<s:VGroup width="98%" id="lineItemGrp" gap="2">
</s:VGroup>
<s:Line width="90%" height="0" >
<s:stroke>
<s:SolidColorStroke color="black" weight="2" />
</s:stroke>
</s:Line>
<s:HGroup width="98%" height="50" gap="0">
<s:VGroup width="98%" height="100%" gap="0">
<s:HGroup height="44" width="100%" gap="80" verticalAlign="bottom" >
<s:Label text="" width="50%" height="25" fontFamily="Times New Roman" fontWeight="bold" verticalAlign="top" fontSize="25" x="130" y="0" textAlign="left"/>
<s:Label width="146" height="25" fontSize="25" fontFamily="Times New Roman" fontWeight="bold" text="CASHIER"
textAlign="right" verticalAlign="top"/>
</s:HGroup>
</s:VGroup>
</s:HGroup>
<s:Line width="90%" height="0" >
<s:stroke>
<s:SolidColorStroke color="black" weight="2" />
</s:stroke>
</s:Line>
</s:VGroup>
</s:Group>
</mx:VBox>
答案 0 :(得分：0)
使用system.drawing.printing dll并将所有内容转换为XML。完成。长期研究后，问题得以解决感谢Shameem和Arun在我们的团队中努力解决这个问题。
我们使用的示例代码。
XmlDocument dc = new XmlDocument();
dc.LoadXml(Dtls);
int len = dc.SelectNodes("//GridXml").Count;
PrintDialog pd = new PrintDialog();
pdoc = new PrintDocument();
PrinterSettings ps = new PrinterSettings();
Font font = new Font("Courier New", 15);
PaperSize psize = new PaperSize("Custom", 300, 300);
pd.Document = pdoc;
pd.Document.DefaultPageSettings.PaperSize = psize;
// 230 + (len * 15) KOT
// 410+(len*15) - Bill
pdoc.DefaultPageSettings.PaperSize.Height = 230 + (len * 15) + 410 + (len * 15);
pdoc.DefaultPageSettings.PaperSize.Width = 300;
pdoc.PrintPage += new PrintPageEventHandler(pdoc_PrintPage);
//pdoc.Print();
PrintDialog printdlg = new PrintDialog();
PrintPreviewDialog printPrvDlg = new PrintPreviewDialog();
printPrvDlg.Document = pdoc;
printPrvDlg.ShowDialog(); // this shows the preview and then show the Printer Dlg below
printdlg.Document = pdoc;
if (printdlg.ShowDialog() == DialogResult.OK)
{
pdoc.Print();
}
}