There are several events that let PowerBuilder know when actions take place in the server application that affect the OLE object.
Events that have to do with data are:
When these events occur, the changes are reflected automatically in the control. If you need to perform additional processing when the object is renamed, saved, or changed, you can write the appropriate scripts.
Because of the architecture of OLE, you often cannot interact with the OLE object within these events. Trying to do so can generate a runtime error. A common workaround is to use the PostEvent function to post the event to an asynchronous event handler. You do not need to post the SaveObject event, which is useful if you want to save the data in the object to a file whenever the server application saves the object.
If the server supports property notifications, then when values for properties of the server change, the PropertyRequestEdit and PropertyChanged events will occur. You can write scripts that cancel changes, save old values, or read new values.
For more information about property notification, see “Creating hot links”.
