VisualAge(R) Help


Using DDE parts

Dynamic data exchange (DDE) enables two applications running on the same machine to exchange data. You can use DDE to have a client application automatically updated when data on a server application changes. In addition to the steps provided on how to use the DDE Client and DDE Server parts, the following information is also available:

Steps for using the DDE parts

The steps for setting up a DDE client application and a DDE server application are the same. The steps below are written for both parts.

  1. Lay out the user interface for the client view and server view.
  2. From the External Functions category
    extcat
    , select the DDE Client part
    REQTEXT
    or DDE Server part
    REQTEXT
    and add it to the free-form surface.
  3. Double-click on the DDE Client or DDE Server part to open the Settings window.
  4. Add the appropriate topics and items to the list.

    The items now appear as part of the public interface for the part.

  5. Make the following types of connections:


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