Predefined Window Classes

The CONTROL statement can be used to define a window control of any class. Window classes may be user defined of one of a predefined set provided by the operating system. The following classes are provided in the OS/2 operating system.

WC_FRAME

Application frame control.
WC_STATIC
Text and group boxes.
WC_BUTTON
Push button, check box or radio button.
WC_COMBOBOX
Combination of an entry field and list box.
WC_ENTRYFIELD
Single line entry field.
WC_MLE
Multiple line entry field.
WC_LISTBOX
List box.
WC_MENU
Application action bar, menus and popup menus.
WC_SCROLLBAR
Horizontal or vertical scroll bar.
WC_TITLEBAR
Application title bar.
WC_SPINBUTTON
Spin button entry field.
WC_CONTAINER
Container list.
WC_SLIDER
Horizontal or vertical slider control.
WC_VALUESET
Value set control.
WC_NOTEBOOK
Notebook control.

These controls make up the standard user interface components for applications. The following example shows a simple listbox control.

CONTROL "", 1, 10, 20, 60, 40, WC_LISTBOX, WS_VISIBLE

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