Summary

VLF Windows Application Development

Summary

VFW104 – Simple Keyed Collections

Important Observations

  • The VL Framework switching service allows your filters and command handlers to switch control between different business objects and to execute commands at the Framework, application or business object level.
  • Switching mimics the actions that a user would perform.
    The target business object must be able to be selected from the menu. That is, at the time the switch occurs, the option Allow selection from the navigation pane in the target business object properties should be checked (selected), and the user should be authorized to the business object.
  • You can use the Virtual Clipboard for remembering and exchanging information.
  • To use the virtual clipboard most effectively you need to devise a standardized naming protocol for items that are posted onto it.

Tips and Techniques

  • In the shipped examples, the Advanced section of the Programming Techniques sample application demonstrates switching and remembering values (virtual clipboard).

What I Should Know

  • How to switch between business objects.
  • How to use the virtual clipboard to record switch history so that the end-users can switch back to object where the switch was initiated.