Gets all modified dialog elements of a dialog one after the other. To get the first modified dialog element in a dialog, you use the handle of the dialog to query the attribute value. To get the next modified dialog element, you use the handle of the dialog element queried last. If no more modified dialog elements are found, a NULL-HANDLE is returned and the query for a modified successor is ended. If you query the MODIFIED-SUCCESSOR of a dialog (window, MDI frame, MDI child), the handle value of the dialog's first modified child will be returned.

To get the selected items of a list box control, you use the SELECTED-SUCCESSOR attribute.

Applies to	Date/time picker control, dialog (all types), edit area control, input field control, list box control, radio button control, scroll bar control, selection box control, slider control, spin control, table control, toggle button control.
Data Type	HANDLE
Default Value	NULL-HANDLE
Possible Values	NULL-HANDLE / any dialog element handle