/// <summary>
/// Create a WinEventInfo instance
/// </summary>
/// <param name="winEventHook">
/// 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.
/// </param>
/// <param name="winEvent">Specifies the event that occurred. This value is one of the event constants.</param>
/// <param name="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.
/// </param>
/// <param name="idObject">
/// Identifies the object associated with the event. This is one of the object identifiers or a
/// custom object ID.
/// </param>
/// <param name="idChild">
/// 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.
/// </param>
/// <param name="eventThread">Identifies the thread that generated the event, or the thread that owns the current window.</param>
/// <param name="eventTime">Specifies the time, in milliseconds, that the event was generated.</param>
/// <returns></returns>
public static WinEventInfo Create(IntPtr winEventHook, WinEvents winEvent, IntPtr hWnd, ObjectIdentifiers idObject, long idChild, ulong eventThread, ulong eventTime)
{
return(new WinEventInfo
{
EventHook = winEventHook,
WinEvent = winEvent,
Handle = hWnd,
ObjectIdentifier = idObject,
IdChild = idChild,
EventThread = eventThread,
EventTime = eventTime
});
}
public static IDisposable Subscribe(this IObserver <WinEventInfo> observer, WinEvents winEvent, ObjectIdentifiers objectIdentifiers)
{
return(Subscribe(observer, winEvent, winEvent, objectIdentifiers));
}
public static IDisposable Subscribe(this IObserver <WinEventInfo> observer, WinEvents winEventStart, WinEvents winEventEnd, ObjectIdentifiers objectIdentifiers)
{
return(WinEventHook
.Create(winEventStart, winEventEnd)
.Where(x => x.IdChild == CHILDID_SELF && x.ObjectIdentifier == objectIdentifiers)
.Subscribe(observer));
}
public static extern bool GetScrollBarInfo(IntPtr hwnd, ObjectIdentifiers idObject, ref ScrollBarInfo scrollBarInfo);
