Mouse.Capture(null);

ReleaseMouseCapture();

button.ClickMode = ClickMode.Hover;

    ...
    button.ClickMode = ClickMode.Hover;
    ...

    public class ChartButton : ToggleButton
    {
        public static Boolean toggleStatusOnClick;

        private void OnPreviewMouseDown(object sender, MouseEventArgs e)
        {
            toggleStatusOnClick = (Boolean)this.IsChecked;
            OnClick();
        }

        protected override void OnClick()
        {
            if (this.IsChecked == toggleStatusOnClick)
            {
                if (Mouse.LeftButton == MouseButtonState.Pressed)
                {
                    base.OnClick();
                }
                ...
            }
        }
        private void InitializeComponent()
        {
            this.PreviewMouseDown += new MouseButtonEventHandler(this.OnPreviewMouseDown);
        }