void OnExpansionWindowVisibilityChanged(ExpansionWindow e)
{
if (Expanded && e.Visible)
{
HideExpansionWindow();
e.Show();
}
}
void ShowExpansionWindow()
{
expansionWindow.Show();
expansionWindow.HideAll();
foreach (var box in checkBoxes)
{
box.Visible = true;
}
Expanded = true;
}