kishon-amir@CS.Yale.EDU (amir kishon) (12/15/89)
Is there any way I can check if a specific application is already running ? (under multifinder, ofcourse). -amir kishon =============================================================================== Amir Kishon ARPA: kishon@cs.yale.edu Yale University, Computer Science Dept. kishon@yale.arpa P.O.Box 2158 Yale Station BITNET: kishon@yalecs.bitnet New Haven, CT. 06520-2158 UUCP: ...!yale!kishon (203) 432-1227 ===============================================================================
jb@aries5.uucp (James Bruyn) (12/18/89)
In article <8581@cs.yale.edu> kishon-amir@CS.Yale.EDU (amir kishon) writes: >Is there any way I can check if a specific application is already running ? >(under multifinder, ofcourse). Except for the fact that the following sugestion will not be approved by Apple, and won't work if somebody changes the application name - walk through the FCB's looking for the file name. Or if you really want to be picky, check creator and file type of every open file. Jim Bruyn Computer Systems Group University of Waterloo
lsr@Apple.COM (Larry Rosenstein) (12/19/89)
In article <1042@maytag.waterloo.edu> jb@aries5.uucp (James Bruyn) writes: > by Apple, and won't work if somebody changes the application name - walk > through the FCB's looking for the file name. Or if you really want to > be picky, check creator and file type of every open file. It is probably better to call PBGetFInfo and check the value of ioFRefnum. Inside Mac volume 4 (p. 149) says this will be the reference number of the first access path found. If it's non-zero then the file is open. (Although I think on 64K ROMs, the system doesn't clear this if the file isn't open, so you should clear this field before making the call.) Also, the same call returns a set of flags in ioFlAttrib which indicate whether the resource and/or data fork is open (IM volume 4 p. 122). In ApplicationMenu is check for ioRefnum <> 0 to tell whether the DA Handler file is open, and therefore whether there is a DA layer. Larry Rosenstein, Apple Computer, Inc. Object Specialist Internet: lsr@Apple.com UUCP: {nsc, sun}!apple!lsr AppleLink: Rosenstein1