如何才能连续打印?(0分)

如何才能连续打印?

直接写并口，看看驱动程序里面的说明

不能接受

直接用Canvas.print打印坐标自已定义

试试Grid++Report的即打即停功能, 参考例子Invoice，去 http://www.rubylong.cn 下载

我试过的，可以这样：
if 纵坐标>XX then

begin
newpage;
mrow:=10;
//mrow为横坐标
mcol:=10;
//mcol为纵标
end;

一个实现即打即停的打印单元
unit SplPrint;
interface
uses
Windows, Messages, Classes, WinSpool, SysUtils;

procedure EnumPrt(st: TStrings;var Def: integer);
procedure StartPrint(PrtName,do
cName, ToFile: string;
Copies: integer);
function ToPrnFrmC(FrmStr: string;
const Args: array of const): boolean;
function ToPrnFrm(FrmStr: string;
const Args: array of const): boolean;
function ToPrnLn(S: string): boolean;
function ToPrn(S: string): boolean;
procedure CancelPrint;
procedure EndPrint;
var
ph: THandle;
DevMode: TDeviceModeA;
PrJob: dword;
implementation
function ReplaceStr(const S, Srch, Replace: string): string;
var
I: Integer;
Source: string;
begin
Source := S;
Result := '';
repeat
I := Pos(Srch, Source);
if I > 0 then
begin
Result := Result + Copy(Source, 1, I - 1) + Replace;
Source := Copy(Source, I + Length(Srch), MaxInt);
end
else
Result := Result + Source;
until I <= 0;
end;

function ToDos(const AnsiStr: String):String;
begin
SetLength(Result, Length(AnsiStr));
if Length(Result) > 0 then
AnsiToOem(PChar(AnsiStr), PChar(Result));
{ OemToAnsi 镳孱狃噻箦?15->253, ?AnsiToOem 253->15 礤 溴豚弪, }
{ 镱?铎?蝈?弪? 觐?矜囹? (玎戾麇眍 磬 痼耨觐?Windows 95) }
Result:=ReplaceStr(Result,chr(253),chr(15));
end;

function ToWin(str: String):String;
begin
if str='' then
begin
Result:='';
System.Exit;
end;
OemToAnsi(PChar(str),PChar(str));
Result:=str;
end;

procedure EnumPrt(st: TStrings;var Def: integer);
type
PPrInfoArr = ^TPrInfoArr;
TPrInfoArr = array [0..0] of TPRINTERINFO2;
var
i,Indx,Level: integer;
buf: pointer;
Need,Returned: dword;
PrInfoArr: PPrInfoArr;
begin
st.Clear;
Def:=0;
Level:=2;
EnumPrinters(PRINTER_ENUM_LOCAL,nil,Level,nil,0,Need,Returned);
GetMem(buf,Need);
try
EnumPrinters(PRINTER_ENUM_LOCAL,nil,Level,PByte(buf),Need,Need,Returned);
PrInfoArr:=buf;
{$RANGECHECKS OFF}
for i:=0 to Returned-1do
begin
Indx:=st.Add(PrInfoArr.pPrinterName);
if (PrInfoArr.Attributes AND PRINTER_ATTRIBUTE_DEFAULT)>0 then
Def:=Indx;
end;
{$RANGECHECKS ON}
finally
FreeMem(buf);
end;
end;

procedure StartPrint(PrtName,do
cName, ToFile: string;
Copies: integer);
var
pdi: PDocInfo1;
pd: TPrinterDefaults;
begin
DevMode.dmCopies:=Copies;
DevMode.dmFields:=DM_COPIES;
pd.pDatatype:='RAW';
pd.pDevMode:=@DevMode;
pd.DesiredAccess:=PRINTER_ACCESS_USE;
if Win32Check(OpenPrinter(PChar(PrtName),ph,@pd)) then
begin
new(pdi);
with pdi^do
begin
pDocName:=PChar(DocName);
if ToFile='' then
pOutputFile:=nil
else
pOutputFile:=PChar(ToFile);
pDatatype:='RAW';
end;
PrJob:=StartDocPrinter(ph,1,pdi);
if PrJob=0 then
Win32Check(false);
end;
end;

function ToPrnFrm(FrmStr: string;
const Args: array of const): boolean;
begin
Result:=ToPrnLn(Format(FrmStr,Args));
end;

function ToPrnFrmC(FrmStr: string;
const Args: array of const): boolean;
begin
Result:=ToPrnLn(ToDos(Format(FrmStr,Args)));
end;

function ToPrnLn(S: string): boolean;
begin
Result:=ToPrn(S+#13#10);
end;

function ToPrn(S: string): boolean;
var cp: dword;
begin
Win32Check(WritePrinter(ph,PChar(S),length(S),cp));
Result:=true;
end;

procedure EndPrint;
begin
Win32Check(EndDocPrinter(ph));
// Win32Check(EndDoc(ph)>0);
end;

procedure CancelPrint;
begin
Win32Check(SetJob(ph,PrJob,0,nil,JOB_CONTROL_CANCEL));
end;

initialization
end.

调用
StartPrint(cbPrinters.Items[cbPrinters.ItemIndex], 'testdo
c', '', 1);
try
ToPrnFrmC(Memo1.Text, []);//Memo1.Text中是需要打印的内容
finally
EndPrint();
end;

不是直接写并口,比较通用,我试用了很好用!