/// <summary>
/// Invokes or closes the <c><see cref="CodePageList"/></c>.
/// </summary>
/// <param name="sender"><c><see cref="bu_List"/></c></param>
/// <param name="e"></param>
void bu_List_click(object sender, EventArgs e)
{
if (_cpList == null)
{
_cpList = new CodePageList(this);
}
else
{
_cpList.Close();
}
}
/// <summary>
/// Nulls <c><see cref="_cpList"/></c> when the
/// <c><see cref="CodePageList"/></c> closes.
/// </summary>
internal void CloseCodepageList()
{
_cpList = null;
}