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This example shows you how to:
•Create an ActiveX Control Column •Have it respond to database values. For this example, you need to have a version of the standard Microsoft Calendar Control on your machine. You also need a sample database column of the DATE data type.
To create the ActiveX control column subclass:
| 1. | Click the Controls tab page, and expand the following nodes in this order: Column Display, OLE Container, ActiveX Control Column. |
| 2. | In the list of available ActiveX Control Columns, click with your right mouse button on the Calendar Control Column class, and choose New from the resulting menu. |
| A subclass of the Calendar class will be created. |
| Right-click on the new subclass, and rename it to MyCalendarColumn. |
| Press Enter, or click OK to dismiss the information box. |
| To use the ActiveX control column subclass: |
| 3. | From the Info Boxes tab page of the Windows Designer catalog, open an info window class containing a field based on a DATE base column. |
| 4. | Open the Property Inspector for the text box corresponding to the DATE base column. |
| 5. | Set the Display Class property of this text box to "MyCalendarColumn". |
| 6. | Using the Object Tree, navigate to the active_data child object of the column control. |
| 7. | On the Behavior tab page, make sure the Default Bind property of the active_data object refers to the property holding the selected date value. For version 7 of the calendar control, this is the "_Value" property (with an underscore), and for version 8, the "Value" property. In either case the property can be found on the General tab page of the Property Inspector. |
| 8. | Run the info window and perform a query in order to see the result. The date values in the database are now displayed in the calendar layout instead of in a text box. |
NOTE: This example only shows how to display existing date values in a different way. You cannot use this implementation to manipulate the date values, or to specify query conditions.
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