Start
Start a QWS3270 program and attempt to connect to the specified host.
Namespace: JollyGiant.Emulation
Assembly: JGSComdotNet (in JGSComdotNet.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax
| C# |
|---|
[ComVisibleAttribute(false)] public StatusCode Start( string qwsPath, string hostname, ref char sessionID ) |
| Visual Basic (Declaration) |
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<ComVisibleAttribute(False)> _ Public Function Start ( _ qwsPath As String, _ hostname As String, _ ByRef sessionID As Char _ ) As StatusCode |
| Visual C++ |
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[ComVisibleAttribute(false)] public: virtual StatusCode Start( String^ qwsPath, String^ hostname, wchar_t% sessionID ) sealed |
| JavaScript |
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function Start(qwsPath, hostname, sessionID); |
Parameters
qwsPath
Type: System..::.StringThe String
The fully qualified path to the QWS program to use.
hostname
Type: System..::.StringHost String
Host name or IP address of the host you want to connect to.
sessionID
Type: System..::.Char %The
The session ID to use. The specified ID is only a request to the program. If the requested ID is already in use by another program instance, the last unused ID (Z-A) will be selected and returned in this parameter. You will need this ID to establish a logical connection to the session before you can exchange information with it.
Return Value
The StatusCode indicating the result of the operation.This can be one of the following values:
| Status code | Description |
|---|---|
| Ok | The new program instance was started successfully. |
| InvalidPsId | The requested session ID was not a valid (A-Z,a-z) character. |
| WHLLTOOMANYSESSIONS | All 26 session IDs are already in use. |
| WHLLSTARTPROCFAILED | Unable to start the new process. |
| WHLLUNKNOWN | An unknown error occurred. |
Implements
IApplication..::.Start(String, String, Char%)Examples
Start the QWS3270 PLUS program and connect to a host, using the default port and terminal type.CopyThe id may or may not be 'A' after the call, depending on whether that ID was already in use by another session. Check the status code and the id after the call.
C#
string qwsPath = @"C:\Program Files\QWS3270 PLUS\qws3270p.exe"; string hostName = @"jollygiant.dnsalias.com"; char id = 'A'; StatusCode sc = qws.Start(qwsPath, hostName, ref id);
Exceptions
| Exception | Condition |
|---|---|
| System |
| . |
| .ArgumentException | Program path or host name are null or empty strings. |
| System.IO.. |
| FileNotFoundException | The file specified in qwsPath could not be found. |