WebTelnetScreenGetText Function

Action

Queries rendered screen content in an active Telnet connection.

Include file

WebAPI.bdh

Syntax

WebTelnetScreenGetText(    in hWeb     : number,
                           in nCol     : number,
                           in nRow     : number,
                           in nLength  : number optional,
                           in nOptions : number optional ) : string;

Return value

String representing the screen content

Parameter	Description
hWeb	Valid handle to a Web connection created by WebTcpipConnect and set to Telnet mode using WebTcpipSetTelnetMode.
nCol	1-based screen column where reading of screen content is to begin.
nRow	1-based screen row from where reading screen content is to begin.
nLength	Length of screen portion to be queried (optional). If omitted, all remaining screen content from given position will be returned.
nOptions	Optionally specifies output string value pre-processing; may be any of following values (optional): TELNET_FLAG_TRIM_LEFT: Leading blank spaces are trimmed from rendered screen text. TELNET_FLAG_TRIM_RIGHT: Trailing blank spaces are trimmed from rendered screen text. TELNET_FLAG_TRIM_BOTH: Rendered text is trimmed from both sides of screen content. TELNET_FLAG_UPPERCASE: Output value will be converted to upper case. TELNET_FLAG_LOWERCASE: Output value will be converted to lower case.

Example

dcltrans
  transaction TInit
  begin
    StrSetHostCP(1148); // 1148  (IBM EBCDIC - International (500 + Euro))
  end TInit;

  transaction TMain
  var
    hWeb0     : number;
    iFieldPos : number;
    sRecv     : string;
  begin
    WebTcpipConnect(hWeb0, "My.TelnetHost.IP", WEB_PORT_TELNET); // Port: 23
    WebTcpipSetTelnetMode(hWeb0, TERMINAL_TYPE_3270, 80, 24, true,
      TELNET_MODEOPT_RFC_1576 | TELNET_MODEOPT_AUTO_RECV);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TerminalType);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_TerminalType);
    WebTelnetRecvSubNegotiation(hWeb0, TELNET_OPT_TerminalType);
    WebTelnetSendTerminalType(hWeb0, "IBM-3278-2-E");
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_EndOfRecord);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_EndOfRecord);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TransmitBinary);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_TransmitBinary);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_EndOfRecord);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_EndOfRecord);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_TransmitBinary);
    WebTelnetSendCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TransmitBinary);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_DO, TELNET_OPT_TransmitBinary);
    WebTelnetRecvCommand(hWeb0, TELNET_CMD_WILL, TELNET_OPT_TransmitBinary);
    WebTelnetRecvRecord(hWeb0);
    WebTelnetRecvRecord(hWeb0);
    WebTelnetSendRecord(hWeb0,
      "\h88001181A600000B0100005000180050" // ····¦······P···P 00000000
 
      "\h001800168186000800F4F1F1F2F2F3F3" // ·········ôññòòóó 00000010
 
      "\hF4F4F5F5F6F6F7F7000D81870400F0F1" // ôôõõöö÷÷······ðñ 00000020
 
      "\hF1F2F2F4F40007818800010200178181" // ñòòôô··········· 00000030
 
      "\h01000050001801000100030004000909" // ···P············ 00000040
 
      "\h0C0780001B81858200090C0000000007" // ················ 00000050

      "\h00000002B900250100F103C301360006" // ····¹·%··ñ·Ã·6·· 00000060
 
      "\h81990000001281970000080008000101" // ················ 00000070
 
      "\h000B0401C0C1000981A80200F0FFFFFF" // ····ÀÁ···¨··ð··· 00000080
      
      "\hFF000C81950000081108110101000F81" // ················ 00000090
 
      "\h80A687888185869997A89580");  // ·¦·······¨·· 000000A0  

    WebTelnetScreenRecvRecordsUntilCursor(hWeb0, 16, 23, sRecv);
    sRecv := WebTelnetScreenGetText(hWeb0, 7, 22, 8);
    if sRecv = "Comments" then
      WebTelnetSendRecord(hWeb0, "\h7D5B6F115B6F" + StrToHostCP("1"));
      WebTelnetScreenRecvRecordsUntilStatus(hWeb0, "Keyboard Locked", "false");
      WebTelnetSendRecord(hWeb0, "\h7D5BF0115BF0" + StrToHostCP("12"));
      WebTelnetScreenRecvRecordsUntilText(hWeb0, 6, 22, "Choice: ");    
      WebTelnetSendRecord(hWeb0, "\h7D5A5E115A5E" + StrToHostCP("12"));
      WebTelnetScreenRecvRecordsUntilField(hWeb0, 1, " ");
      WebTcpipShutdown(hWeb0);
    else
      WebTcpipShutdown(hWeb0);
    end;
  end TMain;