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OS/2 REXX Batch file  |  1996-03-08  |  345b  |  14 lines
  1. /* REXX */
  2.     ThreadID = VRMethod("Application",,
  3.                         "GetThreadID")
  4.     CALL VRMethod "Application",,
  5.                   "GetVar",,
  6.                   "TreeSource."
  7.     SELECT
  8.         WHEN LINES(TreeSource.ThreadID) <> 0
  9.             THEN 
  10.                 RETURN 1
  11.         OTHERWISE
  12.             RETURN 0
  13.     END
  14.