int ISpellCheckableRichEditor.GetBaselineOffset(CharRange error)
{
LINERECT lr = new LINERECT();
lr.lineIndex = SendMessage(TX_LINEFROMCHAR, 0, error.Start) - 1;
if (lr.lineIndex > -1)
{
SendMessage(this.Handle, TX_GETLINERECT, 0, ref lr);
return((int)(lr.lineRect.height / 1440f * Dpi.Y * (this.ZoomFactor / 100f) - 2));
}
else
{
return(this.Font.Height - 2);
}
}
private static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref LINERECT lr);