OLE columns in an application – PB Docs 2019

OLE columns in a DataWindow object enable you to store,
retrieve, and modify blob data in a database. To use an OLE column in
an application, place a DataWindow control in a window and associate
it with the DataWindow object.

For how to create an OLE column in a DataWindow object, see
the section called “Using OLE columns in a DataWindow object” in Users Guide.

Activating an OLE server
application

Users can interact with the blob exactly as you did in preview
in the DataWindow painter: they can double-click a blob to invoke the
server application, then view and edit the blob. You can also use the
OLEActivate function in a script to invoke the server application.
Calling OLEActivate simulates double-clicking a specified blob.

The OLEActivate function has this syntax:

Specifying the verb

When using OLEActivate, you need to know the action to pass to
the OLE server application. (Windows calls these actions verbs.)
Typically, you want to edit the document, which for most servers means
you specify 0 as the verb.

To obtain the verbs supported by a particular OLE server
application, use the advanced interface of the Windows Registry Editor
utility (run REGEDT32 /V).

For information about Registry Editor, see the Windows online
Help file REGEDT32.HLP.

Example

For example, you might want to use OLEActivate in a Clicked
script for a button to allow users to use OLE without their having to
know they can double-click the blob’s icon.

The following statement invokes the OLE server application for
the OLE column in the current row of the DataWindow control
dw_1 (assuming that the second column in the DataWindow object is an
OLE column):

For more information

For more information about using OLE in a DataWindow object, see
the section called “Using OLE columns in a DataWindow object” in Users Guide.