Why are some properties, events, and methods missing from a control?
Studio's Help lists definitions for multiple properties, events, and methods for different controls. These properties, events, and methods are sometimes not initially available when you select the control in Studio.
If an item appears to be missing, use the Configure Type feature in Object Explorer's Properties, Events, and Methods window to access all available options. You may find the item there and you can then add it to the list.
The definitions in the Help represent a superset of all properties, events, and methods which may or may not be present, depending on the control’s class, application, technology, or other category.
For example, .NET controls may have properties, events, and methods that differ from similar controls present in a Windows PowerBuilder application. Or, in another example, combo boxes in the same application may or may not be coded to let users make multiple selections. In the latter case, the MultiSelect property would not be available.