Objects

PLBCMP GUI Only

The major feature of a Graphical User Interface (GUI) is the addition of graphical objects to the user interface. A new set of graphical object data definitions is required for PL/B to change from a text based interactive I/O system to a graphical interactive I/O system. All of these objects have the same basic properties: Existence, Name, Position, Visibility, Activity, Value, and Contents. Not all of these properties may exist at the same time and not all may be changed.

In order to support these graphical objects, a group of object variables has been added to PL/B. Each object described by an object variable may be created, activated, deactivated, and destroyed. Each object may contain one or more specific items. Most of the objects are dynamic in nature in that the PL/B program may modify the information contained in them.

An item is a member of an object and may be manipulated once the object has been created. Items may be disabled, enabled, deleted, inserted, or have a check mark set or cleared beside them. Items may have their value and name retrieved or set. An item is referenced by a sequential number starting at one. The item number zero is reserved to indicate the entire object.

The following objects may be defined:

ANIMATE	DATATABLE	ICON	OBJECT	STATTEXT
AUTOMATION	DATETIME	IMAGELIST	PANEL	STATUSBAR
BUTTON	DIALOG	JSON	PICT	STATUSPANEL
CHECKBOX	EDITDATETIME	LABELTEXT	PLBOBJECT	SUBMENU
CHECKGRP	EDITNUMBER	LINE	POPUPMENU	TABCONTROL
CLIENT	EDITTEXT	LISTVIEW	PROGRESS	TIMER
COLLECTION	ERROR	MAINWINDOW	RADIO	TOOLBAR
COLOR	FLOATMENU	MENU	RADIOGRP	TOOLBUTTON
COMBOBOX	FONT	MENUITEM	RICHEDITTEXT	TREEVIEW
CONTAINER	FTP	MOVIE	RUNTIME	VARIANT
CONTROL	GROUPBOX	MREGION	SHAPE	VSCROLLBAR
DATALIST	HSCROLLBAR	NETCONTROL	SLIDER	WINDOW
DATASET	HTMLCONTROL	NETOBJECT	SPLITTER	XDATA

See Also: Object Activates, Object Properites