چاپ حروف فارسی با پرینتر سوزنی

[aqawae]

با سلام

من می خوام حروف فارسی با پرینتر سوزنی LQ 300 چاپ کنم یه کلاس پیدا کرده ام ولی فقط حروف لاتین چاپ می کند


class LPrinter
{
// Structure and API declarions:
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
public class DOCINFOA
{
[MarshalAs(UnmanagedType.LPStr)] public string pDocName;
[MarshalAs(UnmanagedType.LPStr)] public string pOutputFile;
[MarshalAs(UnmanagedType.LPStr)] public string pDataType;
}
[DllImport("winspool.Drv", EntryPoint="OpenPrinterA", SetLastError=true, CharSet=CharSet.Ansi, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);


[DllImport("winspool.Drv", EntryPoint="ClosePrinter", SetLastError=true, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool ClosePrinter(IntPtr hPrinter);


[DllImport("winspool.Drv", EntryPoint="StartDocPrinterA", SetLastError=true, CharSet=CharSet.Ansi, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool StartDocPrinter( IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);


[DllImport("winspool.Drv", EntryPoint="EndDocPrinter", SetLastError=true, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool EndDocPrinter(IntPtr hPrinter);


[DllImport("winspool.Drv", EntryPoint="StartPagePrinter", SetLastError=true, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool StartPagePrinter(IntPtr hPrinter);


[DllImport("winspool.Drv", EntryPoint="EndPagePrinter", SetLastError=true, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool EndPagePrinter(IntPtr hPrinter);


[DllImport("winspool.Drv", EntryPoint="WritePrinter", SetLastError=true, ExactSpelling=true, CallingConvention=CallingConvention.StdCall)]
public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten );


/*================================================= */

private IntPtr HandlePrinter;
private PrinterSettings ps;

public LPrinter()
{
HandlePrinter = IntPtr.Zero;
ps = new PrinterSettings();

}

public string PrinterName
{
get
{
return ps.PrinterName;
}
set
{
ps.PrinterName = value;
}
}

public bool ChoosePrinter()
{
PrintDialog pd = new PrintDialog();
pd.PrinterSettings = ps;
if(pd.ShowDialog()==DialogResult.OK)
{
ps = pd.PrinterSettings;
return true;
}
else return false;
}

public bool Open(string DocName)
{
// see if printer is already open
if(HandlePrinter!=IntPtr.Zero) return false;


// opens the printer
bool risp = OpenPrinter(ps.PrinterName,out HandlePrinter,IntPtr.Zero);
if(risp==false) return false;


// starts a print job
DOCINFOA MyDocInfo = new DOCINFOA();
MyDocInfo.pDocName = DocName;
MyDocInfo.pOutputFile = null;
MyDocInfo.pDataType = "RAW";

if(StartDocPrinter(HandlePrinter, 1, MyDocInfo))
{
StartPagePrinter(HandlePrinter); //starts a page
return true;
}
else return false;
}


public bool Close()
{
if(HandlePrinter==IntPtr.Zero) return false;
if(!EndPagePrinter(HandlePrinter)) return false;
if(!EndDocPrinter(HandlePrinter)) return false;
if(!ClosePrinter(HandlePrinter)) return false;
HandlePrinter = IntPtr.Zero;
return true;
}

public bool Print(string outputstring)
{
if(HandlePrinter==IntPtr.Zero) return false;

IntPtr buf = Marshal.StringToCoTaskMemAnsi(outputstring);

Int32 done = 0;
bool ok = WritePrinter(HandlePrinter,buf,outputstring.Length ,out done);

Marshal.FreeCoTaskMem(buf);

if(!ok) return false;
else return true;
}

}







LPrinter MyPrinter = new LPrinter();
if (!MyPrinter.Open("Test Page")) return;
MyPrinter.Print("test page \r\n");

[alireza264]

سلام. یادمه اون قدیما از برنامه vgaf یا همچین چیزی استفاده می کردیم و اول اونو تو پرینتر کپی میکردیم و بعدش متن رو می فرستادیم به پرینتر

[aqawae]

واقعا کسی نیست جواب این سئوال بده؟