Can you apply this technique to your applications? Have you written programs that can be decomposed into modules? Tell us about it in our vb.control.creation.dcom discussion group.
Scalable Programs: Making and Using "Plug-ins" for Your VB Apps
One common feature of professional, scalable programs is the ability to include a range of optional modules, or "plug-ins." This article demonstrates how you can include such functionality in your VB6 apps—using some clever thinking and some simple code.
by David M. Williams
May 22, 2003
everal years and employers ago, I worked for a school of information technology in Australia. At one point, administrators, frustrated by a confusing and distributed collection of tools for testing and grading, decided they needed a single program that could manage lists of students and subjects, generate tests, grade submissions, and upload results to the central university system—without being constrained in any way by the actual software being assessed in the exams themselves.
By creating an ActiveX/DLL library, with test generators and markers for each product merged together, I was able to rework the system in just that way. A main program was constructed to perform all the necessary housekeeping functions and to search for the DLLs. Menus were dynamically constructed based on the DLLs present. All the logic to make and mark tests for specific products were bundled into these DLLs.
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everal years and employers ago, I worked for a school of information technology in Australia. At one point, administrators, frustrated by a confusing and distributed collection of tools for testing and grading, decided they needed a single program that could manage lists of students and subjects, generate tests, grade submissions, and upload results to the central university system—without being constrained in any way by the actual software being assessed in the exams themselves.
