Steve,
You are allocating 8 byte for every string, but using only 2. May be
this is why your code is crashing?
--
Best regards,
Boris
Steve,
Friday, August 8, 2003, 12:42:28 AM, you wrote:
SK> Boris,
SK> Although I do not have a solution for you, I too am attempting the same type
SK> of list manipulation.
SK> I have taken your code as an example, however am running into problems.
SK> My code is similar to yours, however, I am not reading the info from a DB
SK> instead it is hard coded. You said that you were loading the list fine,
SK> just having cleanup problems, I'm receiving a fatal error trying to load the
SK> list... What am I doing wrong?
SK> static void PopulateList()
SK> {
SK> char** lstArray = (char**) MemHandleNew(2 * sizeof(char*));
SK> FormType* frmP = FrmGetActiveForm();
SK> ListType* lstP = (ListType*) FrmGetObjectPtr(frmP, lstDesc);
SK> lstArray[0] = (char*)MemPtrNew(8);
SK> StrCopy(lstArray[0], "a");
SK> lstArray[1] = (char*)MemPtrNew(8);
SK> StrCopy(lstArray[1], "b");
SK> LstSetListChoices(lstP, lstArray, 2);
SK> LstDrawList(lstP);
SK> for (int i = 0; i < 2; i++) {
SK> MemPtrFree(lstArray[i]);
SK> }
SK> MemPtrFree(lstArray);
SK> }
SK> "Boris Epshteyn" <[EMAIL PROTECTED]> wrote in message
SK> news:[EMAIL PROTECTED]
>>
>> Hi,
>>
>> I have an interesting problem. I am allocating an array of strings.
>> This array is filled from the database and then used for populating
>> pop-up list. When program is ran, list pops up fine, item gets
>> selected, but when I tap on the trigger again I get:
>> "just read from the ... which is the reserved field of the
>> frmControlObj," bla-bla-bla.
>>
>> If my clean-up portion of the code is commented out, everything runs
>> fine, but creates memory leaks. Clean-up portion is:
>> for (i = numRec - 1; i >= 0; i--)
>> {
>> MemPtrFree(programsArray[i]);
>> }
>> MemPtrFree(programsArray);
>>
>> I would appreciate any ideas why it is happening. The code is bellow:
>>
>>
>> static Boolean frmNewM_trProg_OnSelect(EventPtr event)
>> {
>> ListType *list = GetObjectPtr(lstPrograms);
>> Int16 listItem, cardNo;
>> UInt32 numRec = 0;
>> Err err;
>> char** programsArray;
>> MemHandle record;
>> LocalID progLocID;
>> Program* prog;
>> int i;
>> MemPtr ptr;
>> err = DmOpenDatabaseInfo(progDB, &progLocID, NULL, NULL,&cardNo,
SK> NULL);
>> if (progLocID != 0)
>> {
>> err = DmDatabaseSize(cardNo, progLocID, &numRec, NULL, NULL);
>> }
>> programsArray = (char**)MemPtrNew(numRec * sizeof(char*));
>>
>> for (i = 0; i < numRec; i++)
>> {
>> record = DmQueryRecord(progDB, (UInt16)i);
>> if (record)
>> {
>> prog = (Program*)MemHandleLock(record);
>> ptr = &prog->programName;
>> programsArray[i] = (char*)MemPtrNew(StrLen(ptr) + 1 );
>> StrCopy(programsArray[i], ptr);
>> MemHandleUnlock(record);
>> }
>> }
>> LstSetListChoices(list, programsArray, numRec);
>> listItem = LstPopupList(list);
>>
>> if(listItem != -1)
>> {
>> ControlType *trg = GetObjectPtr(trProg);
>> CtlSetLabel(trg, programsArray[listItem]);
>> }
>> for (i = numRec - 1; i >= 0; i--)
>> {
>> MemPtrFree(programsArray[i]);
>> }
>> MemPtrFree(programsArray);
>> return true;
>> }
>>
>>
>>
>>
>> --
>> Best regards,
>> Boris mailto:[EMAIL PROTECTED]
>>
>>
>>
mailto:[EMAIL PROTECTED]
--
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