#if @HELP_ACTIVEX

This directory contains the following non SPL files that demonstrate
some of the ActiveX capabilities supported by DADiSP:

    DSPTEST1.TXT  -  Visual Basic Example 1
    DSPTEST2.TXT  -  Visual Basic Example 2
    DSPTEST3.TXT  -  Visual Basic Example using Type Library

    DSPDISP.CPP   -  C++ IDispatch Example
    DSPATX1.CPP   -  C++ IDadisp Vtbl Example
    DSPATX2.CPP   -  C++ IDadisp Vtbl Example Using SafeArrays

    ACTX.H        -  ActiveX Include File
    ACTX_I.C      -  Required ActiveX Support File

The Visual Basic files demonstrate calling DADiSP as an Automation
server from Visual Basic. These examples connect to DADiSP using
standard Visual Basic calls.

The C++ source files demonstrate calling DADiSP as an Automation
server from a C++ program.  Each of the files create a simple
console application that connects to DADiSP using standard COM
interfaces.  The console applications act as the Automation clients
and DADiSP acts as the Automation server.

DSPDISP.CPP invokes DADiSP through the standard IDispatch Automation
interface. The dispatch interface is most often used with interpreted
languages such as Visual Basic but is rather clumsy for compiled
languages like C/C++. Because DADiSP offers a dual interface, C/C++
programs can bypass the dispatch interface can make direct Vtbl function
calls.

DSPATX1.CPP demonstrates the direct Vtbl approach using the custom
DADiSP IDadisp interface.  DSPATX1.CPP is easier and faster for most
C/C++ programs, but requires the ACTX.H and ACTX_I.C files from DSP
(included here). DSPATX1 uses Variants to transfer SafeArrays of data.

DSPATX2.CPP also uses the direct Vtbl method, but transfers arrays directly
through SafeArrays. This is the preferred method for C/C++ programs for
simple array transfers.

#endif