Package com.sun.jna.platform.win32

Interface WinUser.WinEventProc

All Superinterfaces:

Callback

Enclosing interface:

WinUser

public static interface WinUser.WinEventProc
extends Callback

An application-defined callback (or hook) function that the system calls in response to events generated by an accessible object.
The hook function processes the event notifications as required.
Clients install the hook function and request specific types of event notifications by calling SetWinEventHook.
The WINEVENTPROC type defines a pointer to this callback function. WinEventProc is a placeholder for the application-defined function name.

Nested Class Summary

Nested classes/interfaces inherited from interface com.sun.jna.Callback

Callback.UncaughtExceptionHandler

Field Summary

Fields inherited from interface com.sun.jna.Callback

FORBIDDEN_NAMES, METHOD_NAME

Method Summary

Modifier and Type	Method	Description
void	callback(WinNT.HANDLE hWinEventHook, WinDef.DWORD event, WinDef.HWND hwnd, WinDef.LONG idObject, WinDef.LONG idChild, WinDef.DWORD dwEventThread, WinDef.DWORD dwmsEventTime)

Method Detail

callback

void callback(WinNT.HANDLE hWinEventHook,
              WinDef.DWORD event,
              WinDef.HWND hwnd,
              WinDef.LONG idObject,
              WinDef.LONG idChild,
              WinDef.DWORD dwEventThread,
              WinDef.DWORD dwmsEventTime)

Parameters:

hWinEventHook - Type: HWINEVENTHOOK
Handle to an event hook function.
This value is returned by SetWinEventHook when the hook function is installed and is specific to each instance of the hook function.

event - Type: DWORD
Specifies the event that occurred.
This value is one of the event constants.

hwnd - Type: HWND
Handle to the window that generates the event, or NULL if no window is associated with the event.
For example, the mouse pointer is not associated with a window.

idObject - Type: LONG
Identifies the object associated with the event.
This is one of the object identifiers or a custom object ID.

idChild - Type: LONG
Identifies whether the event was triggered by an object or a child element of the object.
If this value is CHILDID_SELF, the event was triggered by the object; otherwise, this value is the child ID of the element that triggered the event.

dwEventThread - Type: DWORD
Identifies the thread that generated the event, or the thread that owns the current window.

dwmsEventTime - Type: DWORD
Specifies the time, in milliseconds, that the event was generated.