I am able to delete a list object array (containing the strings in shown in the
list) by calling a function to do when "Exit" is selected and the form on which
the list appears is exited via a menu or an object related function that causes
another form to appear. If I try to call the same function to free the memory
associated with the list object array from a FrmCloseForm event, which happens
when the user abruptly transfers from the program to the main listing of all
programs on the Palm emulator, I get an error message telling me that memory is
being accessed that is deleted. If I don't try to free the array memory, I get
a memory leak. I'm not entirely sure why this is happening. Method works with
exit to another form within program, but doesn't if user exits program
entirely.
Thanks for any expert insight into the cause. Code (which works) to clear
array is:
void FreeStrings(int j)
{
UInt16 i;
if (gStringsPtrArray)
{
for(i = 0;i <j; i++)
{
if (gStringsPtrArray[i])
MemPtrFree(gStringsPtrArray[i]);
}
MemPtrFree(gStringsPtrArray);
}
}
I use the number of items in the database (DmNumRecords()) as the integer in
the call to the function, passing it by variable. If I pass a constant number
corresponding to the number of records (say 2), instead of a named variable,
FreeStrings seems to work. (At least I don't get the memory access errors.)
Is there some way to fix this? I am showing six strings in the list, but the
possible number is greater. Am I missing some aspect of how this string array
and list object work?
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