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From: mvishnu@csg.waterloo.edu (Meenan Vishnu)
Newsgroups: comp.windows.ms.programmer
Subject: Pointer to Functions in Windows 3.0
Keywords: Pointer, Function, Far Pointer, Inter-segment function calls
Message-ID: <1990Dec18.162922.16442@maytag.waterloo.edu>
Date: 18 Dec 90 16:29:22 GMT
Sender: daemon@maytag.waterloo.edu (Admin)
Organization: University of Waterloo
Lines: 19

I have difficulty in using pointers to functions in Windows 3.0.

The pointer points to some invalid location after a while, even though
its value has not changed.  I tried making the code segments FIXED and
declaring all pointers to functions as FAR pointers:

RET_VAL_TYPE (FAR *FUNC_POINTER) ( PARM_1_TYPE, PARM_2_TYPE );

but I still keep getting "IRRECOVERABLE APPLICATION ERROR".  When I
used the CVW and steped through each line,  I find that the location
pointed by the pointer did not have any program code.

Has any netter faced this or similar problem and found any way of 
successfully using a pointers to funtions.  If so please send me
an e-mail note: (mvishnu@csg.uwaterloo.ca)

Thank You,

Vishnu