Event Constants

[This is preliminary documentation and subject to change.]

The following table lists all the events generated by Active Accessibility server applications, in ascending numeric order. The EVENT_MIN and EVENT_MAX values represent the lowest and highest possible event values, respectively.

For more information about events, see WinEvents.

EVENT_SYSTEM_SOUND A sound is being played. Notes
EVENT_SYSTEM_ALERT An alert was generated. Notes
EVENT_SYSTEM_FOREGROUND The foreground window is changing. Notes
EVENT_SYSTEM_MENUSTART An application is entering a modal menu loop. Notes
EVENT_SYSTEM_MENUEND An application is exiting a modal menu loop. Notes
EVENT_SYSTEM_MENUPOPUPSTART A pop-up menu is being displayed. Notes
EVENT_SYSTEM_MENUPOPUPEND A pop-up menu is being removed. Notes
EVENT_SYSTEM_CAPTURESTART A window received mouse capture.
EVENT_SYSTEM_CAPTUREEND A window lost mouse capture.
EVENT_SYSTEM_MOVESIZESTART A window entered a modal move or size loop.
EVENT_SYSTEM_MOVESIZEEND A window exited a modal move or size loop.
EVENT_SYSTEM_CONTEXTHELPSTART A window entered context-sensitive Help mode.
EVENT_SYSTEM_CONTEXTHELPEND A window exited context-sensitive Help mode.
EVENT_SYSTEM_DRAGDROPSTART An application is about to enter drag-and-drop mode. Notes
EVENT_SYSTEM_DRAGDROPEND An application is about to exit drag-and-drop mode. Notes
EVENT_SYSTEM_DIALOGSTART A dialog box was displayed. Notes
EVENT_SYSTEM_DIALOGEND A dialog box was removed. Notes
EVENT_SYSTEM_SCROLLINGSTART A scroll bar is being tracked. Notes
EVENT_SYSTEM_SCROLLINGEND A scroll bar is no longer being tracked. Notes
EVENT_SYSTEM_SWITCHSTART The user pressed alt+tab. Notes
EVENT_SYSTEM_SWITCHEND The user released alt+tab. Notes
EVENT_SYSTEM_MINIMIZESTART A window object is about to be minimized or maximized.
EVENT_SYSTEM_MINIMIZEEND A window object was minimized or maximized.
EVENT_OBJECT_CREATE An object was created. Notes
EVENT_OBJECT_DESTROY An object was destroyed. Notes
EVENT_OBJECT_SHOW An object is being shown. Notes
EVENT_OBJECT_HIDE An object is being hidden. Notes
EVENT_OBJECT_REORDER A container object's children are changing their z-order placements. Notes
EVENT_OBJECT_FOCUS An object is receiving keyboard focus. Notes
EVENT_OBJECT_SELECTION An object selection change occurred. Notes
EVENT_OBJECT_SELECTIONADD An object was added to the selection. Notes
EVENT_OBJECT_SELECTIONREMOVE An object was removed from the selection. Notes
EVENT_OBJECT_SELECTIONWITHIN Numerous selection changes occurred within a container. Notes
EVENT_OBJECT_STATECHANGE An object's state changed. Notes
EVENT_OBJECT_LOCATIONCHANGE An object is changing location, shape, or size. Notes
EVENT_OBJECT_NAMECHANGE An object's Name property changed.
EVENT_OBJECT_DESCRIPTIONCHANGE An object's Description property changed.
EVENT_OBJECT_VALUECHANGE An object's Value property changed.
EVENT_OBJECT_PARENTCHANGE An object has a new parent object.
EVENT_OBJECT_HELPCHANGE An object's Help property changed.
EVENT_OBJECT_DEFACTIONCHANGE An object's DefaultAction property changed.
EVENT_OBJECT_ACCELERATORCHANGE An object's KeyboardShortcut property changed.