To add a control to your dialog, simply click it in the control palette, and then click again on the dialog to place it. You can also drag-and-drop directly from the control palette to the workspace.
You can also make copies of existing controls using the clipboard (e.g. Ctrl-C, Ctrl-V).
Script dialogs support a number of the standard Windows control types (other types may be added in the future):
Static Text: Displays a static text string. The control type is used
for labels and instructions.
Edit Control: A field that you can enter text into. Supports various
sub-types including single line, multiple line, password and
number.
Button: A push button that you can click to trigger an
action.
Check Box: A checkbox button; can be on or off (or optionally, a
third “indeterminate” state).
Radio Button: A radio button; can be on or off. Provides mutual
exclusion with other radio buttons in the same logical group.
Combo Box: Provides a drop-down list in its default mode. Can also
provide an edit field combined with a drop-down list, or an edit field
combined with a flat list.
List Box: Provides a flat list that the user can select one or more
strings from.
List View: Similar to a List Box, but offers multiple columns and
alternate display modes.
Tab Control: A control that can host other dialogs. Each sub-dialog
appears as a tab.
Group Box: Used to draw a box around other controls, or as a header
to divide two sections of a dialog.