How to Add Overlay Images to a List View
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:
The overlay will be displayed if the condition is met, or if no condition is specified.
The general form of an overlay condition is:
You can use variables to refer to columns selected in the SQL Statement property of this list. For example:
WHERE :EMP_NAME != 'John'
This will display an overlay image for all employees except John.