protected override void OnPreviewKeyDown(KeyEventArgs e)
{
base.OnPreviewKeyDown(e);
if (e.Key == Key.Back)
{
if ((CaretIndex == 0) && (mLeftParagraph != null) && SelectionLength == 0)
{
mLeftParagraph.Focus();
mLeftParagraph.CaretIndex = mLeftParagraph.Text.Length;
e.Handled = true;
}
}
if (e.Key == Key.Left)
{
if ((CaretIndex == 0) && (mLeftParagraph != null))
{
mLeftParagraph.Focus();
mLeftParagraph.CaretIndex = mLeftParagraph.Text.Length;
e.Handled = true;
}
}
if (e.Key == Key.Right)
{
if ((CaretIndex == Text.Length) && (mRightParagraph != null))
{
mRightParagraph.Focus();
mRightParagraph.CaretIndex = 0;
e.Handled = true;
}
}
}
