public BalloonTip(UIElement ownerControl)
{
InitializeComponent();
OwnerControl = ownerControl;
_ownerControlRect = new Rect(ownerControl.PointToScreen(new Point(0, 0)), ownerControl.RenderSize);
_showTimer = new DispatcherTimer();
_showTimer.Interval = ShowDelay;
_showTimer.Tick += _showTimer_Tick;
_hideTimer = new DispatcherTimer();
_hideTimer.Interval = HideDelay;
_hideTimer.Tick += _hideTimer_Tick;
BalloonTip prevTip = GetBalloonTip(ownerControl);
if (prevTip != null)
{
if (prevTip.IsOpen)
{
prevTip.FastClose();
}
else if (prevTip._showTimer != null)
{
prevTip._showTimer.Stop();
prevTip._showTimer.Tick -= prevTip._showTimer_Tick;
prevTip._showTimer = null;
}
}
SetBalloonTip(ownerControl, this);
}
protected static void SetBalloonTip(UIElement element, BalloonTip tip)
{
element.SetValue(BalloonTipProperty, tip);
}