/// <summary>
/// This message adds or removes a <see cref="FlashMessageFilter"/>
/// to or from the applications message pump to ensure the duplication
/// of events captured by the activeX are notified also by the parent form.
/// </summary>
/// <param name="sendFlashMessagesToParent"><strong>True</strong>,
/// if message filter should be added, <strong>false</strong>,
/// if it should be removed.</param>
public void SendMessagesToParent(bool sendFlashMessagesToParent)
{
// This message filter ensures the notification of
// key and mouse events that the flash object receives
// for recording
if (sendFlashMessagesToParent)
{
this.messageFilter = new FlashMessageFilter(this.WebBrowser, this.WebBrowser.Parent);
Application.AddMessageFilter(this.messageFilter);
}
else if (this.messageFilter != null)
{
Application.RemoveMessageFilter(this.messageFilter);
this.messageFilter = null;
}
}
/// <summary>
/// This method removes the current <see cref="FlashMessageFilter"/>
/// from the message loop.
/// </summary>
private void RemoveMessageFilter()
{
if (this.messageFilter != null)
{
Application.RemoveMessageFilter(this.messageFilter);
this.messageFilter = null;
}
if (this.messageFilterForMouseLeaveEvents != null)
{
Application.RemoveMessageFilter(this.messageFilterForMouseLeaveEvents);
this.messageFilterForMouseLeaveEvents = null;
}
}