Data associated with a dialog element. Often, it is useful to store information such as a database key or an array index with a dialog element. This allows for quick retrieval of the client data. If you use this attribute with a dialog (window, MDI frame, MDI child), Natural automatically assigns the dialog ID and you may therefore only query this attribute.

Applies to	ActiveX control, bitmap control, date/time picker control, canvas control, context menu, column specification control, control box control, dialog (all types), dialog bar control, edit area control, graphic text control, input field control, line control, list box control, list box item, list view control, menu bar, menu item, OLE container control, progress bar control, push button control, radio button control, rectangle control, scroll bar control, selection box control, selection box item, signal, status bar control, status bar pane, submenu control, slider control, spin control, tab control, tab control tab, table control, timer, tool bar control, toggle button control, tool bar, tool bar item, tree view control.
Data Type	I4
Default Value	0
Possible Values	Any I4 value