hi,
I 'm facing probs on memory leak with table -- in
my application i 'm displaying diff set of data in a
table with 3 columns & 10 rows -- i 'm following
the approach given in Rhodes & Mckeehan's chapter on
table (page 210 - 215)- to insert data in every cell
i'm calling a custom Load routine as follows--
MemHandle gHandles[kNumTextColumns][kNumRows];
//declared globally
static void InitTableData(int TopNo)
{
CharPtr textPtr,s ;
UInt column , row1 ,ListNo;
for(column=0;column<kNumTextColumns;column++)
for(row1=0; row1<kNumRows;row1++)
{
-----------
// some code to consider the scrolling and
// get correct rowNo and data for diff column
----------
----------
if(column==0)
textPtr = Name[ListNo];
else if(column==1)
textPtr = Type[ListNo] ;
else if(column==2)
textPtr =Size[ListNo] ;
gHandles[column][row1] =
MemHandleNew(StrLen(textPtr)+1);
//allocate mem & return handle of the mem-chunk
if(!gHandles[column][row1]) return;
s = MemHandleLock(gHandles[column][row1]);
StrCopy(s, textPtr);
// copy the data to the mem chunk
MemHandleUnlock(gHandles[column][row1]);
}
}
and i 'm calling this function at the end of my
table_initialization function
(passing topNo as Zero) and in sclRepeatEvent.
This book doesn't mention anything abt freeing the
allocated mem handle in that example --but in my
frmCloseEvent i did it as follows -
case frmCloseEvent:
for(i=0;i<kNumTextColumns;i++)
for(j=0;j<kNumRows;j++)
{
if(gHandles[i][j])
MemHandleFree(gHandles[i][j]);
}
handled = false;
break;
and i 'm handing exit button as follows :
case OptionExit:
EventType evtStop;
-----------
//call routine to free mem
//dellocate other golbal varibles
---------------
evtStop.eType = appStopEvent;
EvtAddEventToQueue (&evtStop);
handled =false;
break;
- but still it's giving memory leak whenever i press
the exit button and i 'm sure it's bocz the memory
allocated for ghandle -- how i can free the mem for
ghandle prpperly??
some more observations -
1) i'm calling FrmCloseAllForms() in my AppStop()
function -- and after entering into the main page
without doing anything if press "exit" button it's
exiting without any mem leak --
2) if i add FrmCloseAllForms() in my frmCloseEvent
it's giving Mem Error - SysFatalAlert with the message
"MemoryMgr.c, Line:4384,Free Handle--
3) if i put the FrmCloseAllForms() in ExitButon case
-- there also i 'm getting mem error as read frm
unallocated chunk of memory
Can anybody tell me please where i 'm going wrong ??
Thanx a ton for any help --
pinaki
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