General tab for DDE Server
Use the General tab to specify information about the DDE Server part:
Page 1 Settings
Server name
In the Server name field, type the name of the server that this DDE Server part represents. The name you specify in this field is the name that the DDE client applications use to communication with this application about data and commands it can access.
Data format
From the Data format drop-down list and push button, specify the format of the data you want to pass between the DDE client application and DDE server application.
If you do not have an item selected in the table, the Apply push button is not available.
The format you select in this field is applied to the selected row in the table. Any new items added as rows to the table use the format specified in this field.
Data exchange push buttons
Use the push buttons at the bottom of the page to work with the items in the Items table:
New
Select New to add a new data item to the table. The format specified in the Data format field is used.
Delete
Select Delete to delete a data item from the table. The specified item and format are removed from the public interface for the part. You need to remove any connections made to the items that you delete.
Page 2 Settings
Client in same application as server
Select Client in same application as server to specify that the DDE Client part is in the same application executable as the DDE Server parts.
For Windows:
In the Windows environment, you must select Client in same application as server if you want to be able to query the topic and item information from the server on the DDE Client - Settingswindow. However, if you the DDE client application and DDE server application are in different application executables, then you must deselect Client in same application as server before packaging your application.
DDE Conversation timeout (ms)
In the DDE Conversation timeout (ms) field, type the number of milliseconds you want the DDE client application to wait before timing out when attempting to start a DDE conversation. The default value is 1000 milliseconds.
When setting the time-out value, consider the fact that DDE conversations are synchronous.
If a time out occurs, the lastTransactionError attribute contains the time-out error.
Last modified date: 05/13/2020