Anzahl der GDI Objekte

[Remko]

So you have a GDI Object (handle) leak does not have to be in your code... Watch the counter in task manager and see what actions allocate a GDI object but do not release on close. There is a default limit of 10.000 gdi objects per user (read terminal server session) which is set by a registry key. Maybe you should search the MS KB for gdi object leak.