I found that the information "couldn't create semaphore" was from the file SDL_syssem.c. sdl also can manage semaphore,right?? Best regards, Andy -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.libsdl.org/pipermail/sdl-libsdl.org/attachments/20030304/4a4b0147/attachment.htm>