auto it = m_windows.find(ID);
if( it != m_windows.end() ) {
_SysDebug("CLIENT BUG: Window ID %i is already used by %p", ID, it->second);
auto it = m_windows.find(ID);
if( it != m_windows.end() ) {
_SysDebug("CLIENT BUG: Window ID %i is already used by %p", ID, it->second);