03-16-2009, 05:09 PM
Tested. Windows does not implicitly free the memory used for window properties. If I set thousands of props and don't remove them, later SetProp fails. Error "Not enough storage is available to process this command". This is in all processes not only in QM. Also, clipboard and drag&drop stops working, etc. Restarting QM does not help, need to restart Windows. Maybe props are added as global atoms, and the number of atoms is limited.