我刚刚在Delphi带的Win32SDK中查到的这个消息的说明,<br><br>The WM_SPOOLERSTATUS message is sent from Windows Print Manager whenever a job is added to or removed from the Print Manager queue. <br><br>WM_SPOOLERSTATUS <br>fwJobStatus = wParam; // job-status flag <br>cJobsLeft = LOWORD(lParam); // number of jobs remaining <br><br>Parameters<br><br>fwJobStatus<br><br>Value of wParam. Specifies the PR_JOBSTATUS flag. <br><br>cJobsLeft<br><br>Value of the low-order word of lParam. Specifies the number of jobs remaining in the Print Manager queue. <br><br> <br><br>Return Values<br><br>An application should return zero if it processes this message. <br><br>Remarks<br><br>This message is for informational purposes only