如何控制打印机打印 RAW 文件

RAW文件是 word类型的像素块矩阵，如何控制打印机打印呢？

我这么操作后，打印任务是传到打印机里了，但是一直显示 “正在打印”，而没有东西出来

Delphi(Pascal) code

 if not OpenPrinter(PChar(PrinterName), Handle, nil) then begin   ShowMessage('OpenPrinter Error ' + IntToStr(GetLastError));   Result:= 1;   Exit; end; with DocInfo do begin   pDocName    := PChar('XGY Print Server');   pOutputFile := nil;   pDataType   := 'RAW'; end; if StartDocPrinter(Handle, 1, @DocInfo)=0 then begin   ShowMessage('StartDocPrinter Error ' + IntToStr(GetLastError));   ClosePrinter(Handle);    Result:= 1;   Exit; end; if not StartPagePrinter(Handle) then begin   ShowMessage('StartPagePrinter Error ' + IntToStr(GetLastError));   EndDocPrinter(Handle);   ClosePrinter(Handle);   Result:= 1;   Exit; end; if not WritePrinter(Handle, lPixelBuf, lBufSize, N) then begin   ShowMessage('WritePrinter Error ' + IntToStr(GetLastError));   Result:= 1;   Exit; end; EndPagePrinter(Handle); EndDocPrinter(Handle); ClosePrinter(Handle);