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User Hook Library

Extending the Tandem DDE Gateway

8–4 110838 Tandem Computers Incorporated

If you return a non-zero in the bCancel parameter, then connection attempts for the

PortName will be aborted.

Function Prototype

BOOL FAR PASCAL TdmgwRscLogon

(LPSTR lpPortName, in

LPSTR lpDefaultUserId, in

LPSTR lpDefaultPassword, in

LPSTR lpReturnUserId, out

LPSTR lpReturnPassword, out

BOOL far * bCancel, out

HWND hMainWnd, in

LPSTR lpTdmgwIniFile, in

LPSTR lpTextFile, in

struct tagTdmgwErrorMsg far * pstructErrMsg); out

Parameters

Return Value Zero = Error.

Non-zero = No error.

lpPortName PortName object name.

lpDefaultUserId Default User ID from RSC USER_ID option (if specified) or a

null string.

lpDefaultPassword Default password from RSC PASSWORD option (if specified) or

a null string.

lpReturnUserId Return User ID. Maximum length is 20 bytes including the null

byte terminator.

lpReturnPassword Return password. Maximum length is 20 bytes including the

null byte terminator.

bCancel Zero = Don't cancel connection attempt

Non-zero = Cancel connection attempt

hMainWnd Window handle of Tandem DDE Gateway main window.

lpTdmgwIniFile File name of Tandem DDE Gateway configuration file.

lpTextFile Name of error message text overrides file (specified with

DdeGatewayTextFile configuration option).

pstructErrMsg See the topic “Returning Error Messages” earlier in this section.

User Hook Library The User Hook Library is a dynamic link library (DLL) that you develop to extend the

Tandem DDE Gateway.

The User Hook Library consists of functions called by the Tandem DDE Gateway at

predefined points in its processing logic. Your code, packaged into a User Hook

Library, can thus become part of the Tandem DDE Gateway.

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Hp NonStop G-Series Manual de usuario Pagina 106