Product Documentation

c-treeDB API for C++ - Developers Guide

Previous Topic

Next Topic

Callback Function Type

Every c-treeDB callback function must be a function that returns CTDBRET and takes a CTHANDLE parameter. The following typedef declares the function callback type:

typedef CTDBRET (ctdbDECL* ctdbCallbackFunc)(CTHANDLE Handle);

When implementing callbacks you need to create your callback functions with the same type of ctdbCallbackFunc. Below is an example of a c-treeDB session logon callback.

c-treeDB C API Example


CTDBRET ctdbDECL OnSessionLogon(CTHANDLE Handle)

{

pCTDBSESSION pSession = (pCTDBSESSION)Handle;

printf("Server: %s\n", pSession->server_name);

printf("User: %s\n", pSession->user_name);

printf("Password: %s\n", pSession->user_password);

}

Please refer to the Callback Types section below for more information on each available callback type.

TOCIndex