How Tos

Last reviewed: 3/4/2013

Article ID: H031301

HOW: Developing C++Builder applications that manage conversations

The information in this article applies to:

  • VoiceXMLKit


You can develop C++Builder applications that manage conversations using your favorite version of C++Builder.

More Information

VoiceXMLKit includes C++Builder header files comprised of the C++Builder classes that manage conversations and automatically load and unload the runtime DLL.

To access the VoiceXMLKit C++Builder classes within your application, first add a project reference to the C++Builder header include files:

    1. Within your C++Builder project, select Project Options.
    2. Select the C++Builder compiler options.
    3. Add Include path reference to the VoiceXMLKit header files directory: C:\Program Files\Chant\VoiceXMLKit\Win32\CBuilder\include.

    To access the VoiceXMLKit C++Builder classes within your application, add a reference to the VoiceXMLKit Header file in your C++Builder application header file:

    #include "cchantxm.h"

    Add a reference in your C++Builder application source file to the VoiceXMLKit code needed to dynamically load and unload the runtime DLL:

    #include "CChantVoiceXMLKit.cpp"

    Object Instantiation

    Declare a global variable for the ChantXM class, instantiate an instance, set the license and serial properties, and set the event handler message.

    Add the following to your application header file:

    void __fastcall OnHasEvent(TMessage& msg);
    MESSAGE_HANDLER(WM_APP+9, TMessage, OnHasEvent);
    // User declarations
    CChantXM* ChantXM1;

    Add the following to your application source file:

    ChantXM1 = new CChantXM();
    // Set deployment license properties
    // Define the HasEvent callback message
    ChantXM1->SetWindowMessage(Handle, WM_APP+9, 0, 0);

    Event Callbacks

    Event callbacks are the mechanism in which the component library communications information back to the application such as compilation is complete or there was an error.

    void __fastcall TForm1::OnHasEvent(TMessage& msg)
    int numberOfEvents = ChantXM1->GetResourceCount(CSREvent,0,0);
    for (int i = 0; i < numberOfEvents; i++)
        // Get the event from the event queue
        CChantXMEvent* pEvent = ChantXM1->GetChantXMEvent(0);
        switch (pEvent->GetChantCallback())
            case CCXMCompileDone:
            case CCXMCompileError:
        // Remove the event from the event queue
        delete pEvent;

    Deployment Checklist

    When you are ready to deploy your C++Builder application, you need to ensure you have a valid license, bundle the correct Chant component library, and configure your installation properly on the target system. Review the following checklist before deploying your applications:

    • You may deploy your C++Builder application to any system with a valid license from the Chant.
    • Copy CVoiceXMLKit.dll to the target system and place in the same directory with your application.

    Sample Projects

    C++Builder sample projects are installed at the following location:

    • My Documents\Chant VoiceXMLKit\Win32\CBuilder\RS 2009,
    • My Documents\Chant VoiceXMLKit\Win32\CBuilder\RS 2010,
    • My Documents\Chant VoiceXMLKit\Win32\CBuilder\RS XE,
    • My Documents\Chant VoiceXMLKit\Win32\CBuilder\RS XE2, and
    • My Documents\Chant VoiceXMLKit\Win32\CBuilder\RS XE3.

    For additional help with VoiceXMLKit, contact Chant Support via Chant Support Contacts or web.