/// <summary>
/// Manipulate cursor position when deleting characters from textbox equation
/// </summary>
private void TextEquationDelete()
{
posCursor = TextBoxEquation.SelectionStart;
if ((posCursor - 1) >= 0)
{
TextBoxEquation.Text = TextBoxEquation.Text.Remove(posCursor - 1, 1);
TextBoxEquation.SelectionStart = posCursor - 1;
}
else
{
TextBoxEquation.SelectionStart = 0;
}
TextBoxEquation.Focus();
}
/// <summary>
/// Method to focus to textbox equation
/// </summary>
private void InputTextFocus()
{
TextBoxEquation.Focus();
}
/// <summary>
/// CE button click (delete all written equation on textbox)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ButtonCE_Click(object sender, EventArgs e)
{
TextBoxEquation.Text = "";
TextBoxEquation.Focus();
}
