My code only get from textbox I want to get on window such as a weppage or text file HOW ?
private void txtHoverWord_MouseMove(object sender, MouseEventArgs e)
{
if (!(sender is TextBox)) return;
var targetTextBox = sender as TextBox;
if (targetTextBox.TextLength < 1) return;
var currentTextIndex = targetTextBox.GetCharIndexFromPosition(e.Location);
var wordRegex = new Regex(@"(\w+)");
var words = wordRegex.Matches(targetTextBox.Text);
if (words.Count < 1) return;
var currentWord = string.Empty;
for (var i = words.Count - 1; i >= 0; i--)
{
if (words[i].Index <= currentTextIndex)
{
currentWord = words[i].Value;
break;
}
}
if (currentWord == string.Empty) return;
tooltip1.SetToolTip(targetTextBox, currentWord);
}