When I try to send a message to my rich edit control I get an error code number 1126. If I look in Winerror.h that means ERROR_DISK_RECALIBRATE_FAILED but that is kind of an odd error because this operation doesn't access the disk. So I'm wondering if someone knows if the EDITSTREAM.dwError numbers are defined in a different error header besides Winerror.h. Or perhaps you know what ERROR_DISK_RECALIBRATE_FAILED really means?