Child controls are created in the currently selected parent window. A parent window may have several child controls. wd commands affect the child controls of the selected parent window.
Child controls are created with a given class and styles. The class defines the type of control, the styles customize the control. Some styles are specific to a particular type of control, other styles can be used with most or all controls. Style names reflect their use, for example es_uppercase is a style applicable only to edit boxes. Styles whose names begin with the letters ws_ apply to any control. The group style groups the control with the previous control. Tab and Cursor keys recognize groups.
The command cc creates child controls. Typical syntax is:
cc id class style1 style2 ...