wxSize client_size = GetClientSize();
m_owner->CalcUnscrolledPosition( client_size.x, client_size.y, &client_size.x, &client_size.y );
wxSize client_size = GetClientSize();
m_owner->CalcUnscrolledPosition( client_size.x, client_size.y, &client_size.x, &client_size.y );