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A list view's Overlay Condition and Overlay Image properties can be used to determine if and when the icons or bitmaps specified for the list view items should have a second image superimposed on it under certain conditions.
To add overlay images to a list view:
| 1. | Make sure that icons or bitmaps have been defined for the list view's items. |
| 2. | Determine what the overlay condition is, write it as a SQL statement, and set the list view's Overlay Condition behavior property to this statement. |
| The overlay will be displayed if the condition is met, or if no condition is specified. |
| The general form of an overlay condition is: |
SELECT ''
FROM ...
WHERE ...
| You can use variables to refer to columns selected in the SQL Statement property of this list. For example: |
SELECT ''
FROM emp
WHERE :EMP_NAME != 'John'
| This will display an overlay image for all employees except John. |
| 3. | Set the list view's Overlay Image behavior property to the name of the icon or bitmap image you want to use as the overlay image. |
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