Enum WinEvents

Used for SetWinEventHook See at MSDN and here and here

Namespace: Dapplo.Windows.Enums

Assembly: Dapplo.Windows.dll

Syntax

public enum WinEvents : uint

Fields

Name	Description
EVENT_AIA_END
EVENT_AIA_START
EVENT_CONSOLE_CARET
EVENT_CONSOLE_END_APPLICATION
EVENT_CONSOLE_LAYOUT
EVENT_CONSOLE_START_APPLICATION
EVENT_CONSOLE_UPDATE_REGION
EVENT_CONSOLE_UPDATE_SCROLL
EVENT_CONSOLE_UPDATE_SIMPLE
EVENT_MAX
EVENT_MIN	Minimum possible value for the WinEvents
EVENT_OBJECT_ACCELERATORCHANGE
EVENT_OBJECT_CLOAKED	EVENT_OBJECT_CLOAKED / UNCLOAKED Sent when a window is cloaked or uncloaked. A cloaked window still exists, but is invisible to the user.
EVENT_OBJECT_CONTENTSCROLLED	EVENT_OBJECT_CONTENTSCROLLED Sent when ending the scrolling of a window object. Unlike the similar event (EVENT_SYSTEM_SCROLLEND), this event will be associated with the scrolling window itself. There is no difference between horizontal or vertical scrolling. This event should be posted whenever scroll action is completed, including when it is scrolled by scroll bars, mouse wheel, or keyboard navigations. example: hwnd == window that is scrolling idObject == OBJID_CLIENT idChild == CHILDID_SELF
EVENT_OBJECT_CREATE	Object events The system AND apps generate these. The system generates these for real windows. Apps generate these for objects within their window which act like a separate control, e.g. an item in a list view. When the system generate them, dwParam2 is always WMOBJID_SELF. When apps generate them, apps put the has-meaning-to-the-app-only ID value in dwParam2. For all events, if you want detailed accessibility information, callers should Call AccessibleObjectFromWindow() with the hwnd, idObject parameters of the event, and IID_IAccessible as the REFIID, to get back an IAccessible* to talk to Initialize and fill in a VARIANT as VT_I4 with lVal the idChild parameter of the event. If idChild isn't zero, call get_accChild() in the container to see if the child is an object in its own right. If so, you will get back an IDispatch* object for the child. You should release the parent, and call QueryInterface() on the child object to get its IAccessible*. Then you talk directly to the child. Otherwise, if get_accChild() returns you nothing, you should continue to use the child VARIANT. You will ask the container for the properties of the child identified by the VARIANT. In other words, the child in this case is accessible but not a full-blown object. Like a button on a titlebar which is 'small' and has no children. For all EVENT_OBJECT events, hwnd is the dude to Send the WM_GETOBJECT message to (unless NULL, see above for system things) idObject is the ID of the object that can resolve any queries a client might have. It's a way to deal with windowless controls, controls that are just drawn on the screen in some larger parent window (like SDM), or standard frame elements of a window. idChild is the piece inside of the object that is affected. This allows clients to access things that are too small to have full blown objects in their own right. Like the thumb of a scrollbar. The hwnd/idObject pair gets you to the container, the dude you probably want to talk to most of the time anyway. The idChild can then be passed into the acc properties to get the name/value of it as needed. Example #1: System propagating a listbox selection change EVENT_OBJECT_SELECTION hwnd == listbox hwnd idObject == OBJID_WINDOW idChild == new selected item, or CHILDID_SELF if nothing now selected within container. Word '97 propagating a listbox selection change hwnd == SDM window idObject == SDM ID to get at listbox 'control' idChild == new selected item, or CHILDID_SELF if nothing Example #2: System propagating a menu item selection on the menu bar EVENT_OBJECT_SELECTION hwnd == top level window idObject == OBJID_MENU idChild == ID of child menu bar item selected Example #3: System propagating a dropdown coming off of said menu bar item EVENT_OBJECT_CREATE hwnd == popup item idObject == OBJID_WINDOW idChild == CHILDID_SELF Example #4: For EVENT_OBJECT_REORDER, the object referred to by hwnd/idObject is the PARENT container in which the zorder is occurring. This is because if one child is zordering, all of them are changing their relative zorder.
EVENT_OBJECT_DEFACTIONCHANGE
EVENT_OBJECT_DESCRIPTIONCHANGE
EVENT_OBJECT_DESTROY
EVENT_OBJECT_DRAGCANCEL
EVENT_OBJECT_DRAGCOMPLETE
EVENT_OBJECT_DRAGDROPPED
EVENT_OBJECT_DRAGENTER
EVENT_OBJECT_DRAGLEAVE
EVENT_OBJECT_DRAGSTART	Drag / Drop Events These events are used in conjunction with the UI Automation Drag/Drop patterns. For DRAGSTART, DRAGCANCEL, and DRAGCOMPLETE, HWND+objectID+childID refers to the object being dragged. For DRAGENTER, DRAGLEAVE, and DRAGDROPPED, HWND+objectID+childID refers to the target of the drop that is being hovered over.
EVENT_OBJECT_END
EVENT_OBJECT_FOCUS
EVENT_OBJECT_HELPCHANGE
EVENT_OBJECT_HIDE
EVENT_OBJECT_HOSTEDOBJECTSINVALIDATED	EVENT_OBJECT_HOSTEDOBJECTSINVALIDATED Sent when a window that is hosting other Accessible objects changes the hosted objects. A client may wish to requery to see what the new hosted objects are, especially if it has been monitoring events from this window. A hosted object is one with a different Accessibility framework (MSAA or UI Automation) from its host. Changes in hosted objects with the same framework as the parent should be handed with the usual structural change events, such as EVENT_OBJECT_CREATED for MSAA. see above.
EVENT_OBJECT_IME_CHANGE	EVENT_OBJECT_IME_CHANGE Sent by an IME window whenever it changes size or position.
EVENT_OBJECT_IME_HIDE
EVENT_OBJECT_IME_SHOW	EVENT_OBJECT_IME_SHOW/HIDE Sent by an IME window when it has become visible or invisible.
EVENT_OBJECT_INVOKED
EVENT_OBJECT_LIVEREGIONCHANGED	EVENT_OBJECT_LIVEREGIONCHANGED Sent when an object that is part of a live region changes. A live region is an area of an application that changes frequently and/or asynchronously, so that an assistive technology tool might want to pay special attention to it.
EVENT_OBJECT_LOCATIONCHANGE	Note: A LOCATIONCHANGE is not sent for every child object when the parent changes shape/moves. Send one notification for the topmost object that is changing. For example, if the user resizes a top level window, USER will generate a LOCATIONCHANGE for it, but not for the menu bar, title bar, scrollbars, etc. that are also changing shape/moving. In other words, it only generates LOCATIONCHANGE notifications for real windows that are moving/sizing. It will not generate a LOCATIONCHANGE for every non-floating child window when the parent moves (the children are logically moving also on screen, but not relative to the parent). Now, if the app itself resizes child windows as a result of being sized, USER will generate LOCATIONCHANGEs for those dudes also because it doesn't know better. Note also that USER will generate LOCATIONCHANGE notifications for two non-window sys objects: (1) System caret (2) Cursor
EVENT_OBJECT_NAMECHANGE
EVENT_OBJECT_PARENTCHANGE
EVENT_OBJECT_REORDER
EVENT_OBJECT_SELECTION	NOTES: There is only one "focused" child item in a parent. This is the place keystrokes are going at a given moment. Hence only send a notification about where the NEW focus is going. A NEW item getting the focus already implies that the OLD item is losing it. SELECTION however can be multiple. Hence the different SELECTION notifications. Here's when to use each: (1) Send a SELECTION notification in the simple single selection case (like the focus) when the item with the selection is merely moving to a different item within a container. hwnd + ID is the container control, idChildItem is the new child with the selection. (2) Send a SELECTIONADD notification when a new item has simply been added to the selection within a container. This is appropriate when the number of newly selected items is very small. hwnd + ID is the container control, idChildItem is the new child added to the selection. (3) Send a SELECTIONREMOVE notification when a new item has simply been removed from the selection within a container. This is appropriate when the number of newly selected items is very small, just like SELECTIONADD. hwnd + ID is the container control, idChildItem is the new child removed from the selection. (4) Send a SELECTIONWITHIN notification when the selected items within a control have changed substantially. Rather than propagate a large number of changes to reflect removal for some items, addition of others, just tell somebody who cares that a lot happened. It will be faster an easier for somebody watching to just turn around and query the container control what the new bunch of selected items are.
EVENT_OBJECT_SELECTIONADD
EVENT_OBJECT_SELECTIONREMOVE
EVENT_OBJECT_SELECTIONWITHIN
EVENT_OBJECT_SHOW
EVENT_OBJECT_STATECHANGE	Examples of when to send an EVENT_OBJECT_STATECHANGE include It is being enabled/disabled (USER does for windows) It is being pressed/released (USER does for buttons) It is being checked/unchecked (USER does for radio/check buttons)
EVENT_OBJECT_TEXTSELECTIONCHANGED
EVENT_OBJECT_UNCLOAKED
EVENT_OBJECT_VALUECHANGE
EVENT_OEM_DEFINED_END
EVENT_OEM_DEFINED_START
EVENT_SYSTEM_ALERT	EVENT_SYSTEM_ALERT System Alerts: (Generated by MessageBox() calls for example) hwnd is hwndMessageBox idObject is OBJID_ALERT App Alerts: (Generated whenever) hwnd+idObject gets interface pointer to Alert System Alerts (indexChild of system ALERT notification) define ALERT_SYSTEM_INFORMATIONAL 1 // MB_INFORMATION define ALERT_SYSTEM_WARNING 2 // MB_WARNING define ALERT_SYSTEM_ERROR 3 // MB_ERROR define ALERT_SYSTEM_QUERY 4 // MB_QUESTION define ALERT_SYSTEM_CRITICAL 5 // HardSysErrBox define CALERT_SYSTEM 6
EVENT_SYSTEM_ARRANGMENTPREVIEW
EVENT_SYSTEM_CAPTUREEND
EVENT_SYSTEM_CAPTURESTART	EVENT_SYSTEM_CAPTURESTART EVENT_SYSTEM_CAPTUREEND Sent when a window takes the capture and releases the capture.
EVENT_SYSTEM_CONTEXTHELPEND
EVENT_SYSTEM_CONTEXTHELPSTART	Context Help EVENT_SYSTEM_CONTEXTHELPSTART EVENT_SYSTEM_CONTEXTHELPEND Sent when a window enters and leaves context sensitive help mode.
EVENT_SYSTEM_DESKTOPSWITCH
EVENT_SYSTEM_DIALOGEND
EVENT_SYSTEM_DIALOGSTART	Dialog Send the START notification right after the dialog is completely initialized and visible. Send the END right before the dialog is hidden and goes away. EVENT_SYSTEM_DIALOGSTART EVENT_SYSTEM_DIALOGEND
EVENT_SYSTEM_DRAGDROPEND
EVENT_SYSTEM_DRAGDROPSTART	Drag and Drop EVENT_SYSTEM_DRAGDROPSTART EVENT_SYSTEM_DRAGDROPEND Send the START notification just before going into drag and drop loop. Send the END notification just after canceling out. Note that it is up to apps and OLE to generate this, since the system doesn't know. Like EVENT_SYSTEM_SOUND, it will be a while before this is prevalent.
EVENT_SYSTEM_END
EVENT_SYSTEM_FOREGROUND	EVENT_SYSTEM_FOREGROUND Sent when the foreground (active) window changes, even if it is changing to another window in the same thread as the previous one. hwnd is hwndNewForeground idObject is OBJID_WINDOW idChild is INDEXID_OBJECT
EVENT_SYSTEM_IME_KEY_NOTIFICATION	Sent when an IME's soft key is pressed and should be echoed, but is not passed through the keyboard hook. Must not be sent when a key is sent through the keyboard hook. HWND is the hwnd of the UI containing the soft key idChild is the Unicode value of the character entered idObject is a bitfield 0x00000001: set if a 32-bit Unicode surrogate pair is used
EVENT_SYSTEM_MENUEND
EVENT_SYSTEM_MENUPOPUPEND
EVENT_SYSTEM_MENUPOPUPSTART	EVENT_SYSTEM_MENUPOPUPSTART EVENT_SYSTEM_MENUPOPUPEND Sent when a menu popup comes up and just before it is taken down. Note that for a call to TrackPopupMenu(), a client will see EVENT_SYSTEM_MENUSTART followed almost immediately by EVENT_SYSTEM_MENUPOPUPSTART for the popup being shown. For MENUPOPUP, hwnd+idObject+idChild refers to the NEW popup coming up, not the parent item which is hierarchical. You can get the parent menu/popup by asking for the accParent object.
EVENT_SYSTEM_MENUSTART	Menu hwnd is window (top level window or popup menu window) idObject is ID of control (OBJID_MENU, OBJID_SYSMENU, OBJID_SELF for popup) idChild is CHILDID_SELF EVENT_SYSTEM_MENUSTART EVENT_SYSTEM_MENUEND For MENUSTART, hwnd+idObject+idChild refers to the control with the menu bar, or the control bringing up the context menu. Sent when entering into and leaving from menu mode (system, app bar, and track popups).
EVENT_SYSTEM_MINIMIZEEND
EVENT_SYSTEM_MINIMIZESTART	EVENT_SYSTEM_MINIMIZESTART EVENT_SYSTEM_MINIMIZEEND Sent when a window minimizes and just before it restores.
EVENT_SYSTEM_MOVESIZEEND
EVENT_SYSTEM_MOVESIZESTART	Move Size EVENT_SYSTEM_MOVESIZESTART EVENT_SYSTEM_MOVESIZEEND Sent when a window enters and leaves move-size dragging mode.
EVENT_SYSTEM_SCROLLINGEND
EVENT_SYSTEM_SCROLLINGSTART	EVENT_SYSTEM_SCROLLING EVENT_SYSTEM_SCROLLINGSTART EVENT_SYSTEM_SCROLLINGEND Sent when beginning and ending the tracking of a scrollbar in a window, and also for scrollbar controls.
EVENT_SYSTEM_SOUND	System events EVENT_SYSTEM_SOUND Sent when a sound is played. Currently nothing is generating this, we this event when a system sound (for menus, etc) is played. Apps generate this, if accessible, when a private sound is played. For example, if Mail plays a "New Mail" sound. System Sounds: (Generated by PlaySoundEvent in USER itself) hwnd is NULL idObject is OBJID_SOUND idChild is sound child ID if one App Sounds: (PlaySoundEvent won't generate notification; up to app) hwnd + idObject gets interface pointer to Sound object idChild identifies the sound in question are going to be cleaning up the SOUNDSENTRY feature in the control panel and will use this at that time. Applications implementing WinEvents are perfectly welcome to use it. Clients of IAccessible* will simply turn around and get back a non-visual object that describes the sound.
EVENT_SYSTEM_SWITCHEND
EVENT_SYSTEM_SWITCHER_APPDROPPED	Dropped: HWND = hwnd of app thumbnail, objectID = same, childID = 0
EVENT_SYSTEM_SWITCHER_APPGRABBED	AppGrabbed: HWND = hwnd of app thumbnail, objectID = 0, childID = 0
EVENT_SYSTEM_SWITCHER_APPOVERTARGET	OverTarget: HWND = hwnd of app thumbnail, objectID = 1 for center 2 for near snapped 3 for far snapped 4 for prune childID = 0
EVENT_SYSTEM_SWITCHER_CANCELLED	Cancelled: HWND = hwnd of app thumbnail, objectID = 0, childID = 0
EVENT_SYSTEM_SWITCHSTART	Alt-Tab Window Send the START notification right after the switch window is initialized and visible. Send the END right before it is hidden and goes away. EVENT_SYSTEM_SWITCHSTART EVENT_SYSTEM_SWITCHEND
EVENT_UIA_EVENTID_END
EVENT_UIA_EVENTID_START
EVENT_UIA_PROPID_END
EVENT_UIA_PROPID_START