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About Applet Controls and List Columns

Controls and list columns are child objects of the applet object type. Controls implement user interface elements, such as text boxes, check boxes, and buttons. In form applets, controls also implement fields. In list applets, list columns implement fields.

You define controls and list columns for new applets using the New Applet Wizard. For existing applets, you add, remove, and modify controls and list columns using the Applet Layout Editor. For more information, see Adding Existing Controls and List Columns to Applet Layouts and Adding New Controls and List Columns to Applet Layouts.

List columns, and have a corresponding object type (List Column). Data entry in a list applet is performed in the cells that are at the intersections of rows and list columns. Cells in different list columns can function in different ways, depending on the properties of their list columns. Some examples of cell behavior based on list column properties are:

• Cells in some list columns function like text controls in a form applet. This kind of cell is used for the display and editing of a text, numeric, date, or currency value. If the list column is not read-only, you can click the cell to activate an editing cursor, and edit the text.
• Cells in some list columns function like check box controls in a form applet. A check mark in the box is a TRUE value; an empty box has a FALSE value.
• When TRUE, a check box in a list column holds a check mark symbol, whereas a check box in a control in a form applet holds an X symbol.
• Cells containing underlined, colored text are drilldown fields. Drilldown fields let the user navigate from the cell to another view that presents detailed information about the selected row.

There are many types of controls, as defined by the HTML Type property of the control or list column object, including Text Area, CheckBox, MiniButtons, ActiveX Controls, and Links. The following topics in this section describe the various types of controls.

For a complete list of Control and List Column properties, see Object Types Reference.