the first probelm i am having is everytime the emulator loads, it doesn;t
come to the default opening screen, btu somehow launches into a program i
installed on it. I tried re-downloading the emulator, but the program keeps
loading by default, and i didn't make any switches or prefrences to have it
do that.
the second problem i am having is with data base, when i retrieve records
from a data base the emulator crashes, and i assume there is something wrong
with my memory management, or the DmWrite.
this is how i retrieve text from text field and store them.
textFieldPrt = getObject(frmP,MainFirstNameField);
FldCompactText(textFieldPrt);
h = FldGetTextHandle(textFieldPrt);
s = MemHandleLock((void *)h);
clientRec.firstName = s;
FldSetTextHandle(textFieldPrt, NULL);
MemHandleUnlock((void *)h);
//MemHandleFree(h);
textFieldPrt = getObject(frmP,MainLastNameField);
FldCompactText(textFieldPrt);
h = FldGetTextHandle(textFieldPrt);
s = MemHandleLock((void *)h);
clientRec.lastName = s;
FldSetTextHandle(textFieldPrt, NULL);
MemHandleUnlock((void *)h);
//MemHandleFree(h);
textFieldPrt = getObject(frmP,MainPhoneField);
FldCompactText(textFieldPrt);
h = FldGetTextHandle(textFieldPrt);
s = MemHandleLock((void *)h);
clientRec.phoneNumber = s ;
FldSetTextHandle(textFieldPrt, NULL);
MemHandleUnlock((void *)h);
//MemHandleFree(h);
//Char* FldGetTextPtr (FieldType* fldP)
FrmCustomAlert(DbInputAlert,clientRec.firstName,clientRec.lastName,clientRec
.phoneNumber);
//pointer to record
//create the database record and get a handle to it
hrecord = DmNewRecord(contactsDB, &(cursor),
sizeof(clientRec)+6);
//lock down the record to motify
precord = MemHandleLock(hrecord);
//clear the record
//DmSet(precord, 0, sizeof(Client), 0);
DmWrite(precord,0,&(clientRec),sizeof(clientRec)+6);
//unlock the record
MemHandleUnlock(hrecord);
//clear the busy biy and set the dirty bit
DmReleaseRecord(contactsDB,cursor, true);
//incrememnt the totalr ecord count
numRecords++;
//increment cursor
//cursor++;
isDirty = true;
---------------
this next sample is how i retrive my records, the varibale cursor is set
globaly in a different function. is there anything i am missing in memeory
management htta may cause this?
static void setFields(void)
{
FormPtr form; //contact detail form
//CharPtr precord; //A record pointer
Int16 index; //The object index
Client *clientRecPtr;
form = FrmGetActiveForm();
//get currect record
hrecord = DmQueryRecord(contactsDB, cursor);
clientRecPtr = MemHandleLock(hrecord);
if (clientRecPtr->firstName!= NULL)
{
//set the text for the first name field
setText(getObject(form,MainFirstNameField),clientRecPtr->firstName);
//precord+ DB_FIRST_NAME_START);
//set the text for the last name field
setText(getObject(form,MainLastNameField),clientRecPtr->lastName);//precord+
DB_LAST_NAME_START);
//set the text for the phone number field
setText(getObject(form,
MainPhoneField),clientRecPtr->phoneNumber);//precord+DB_PHONE_NUMBER_START);
}
else
{
//set the text for the first name field
setText(getObject(form,MainFirstNameField)," ");
//precord+ DB_FIRST_NAME_START);
//set the text for the last name field
setText(getObject(form,MainLastNameField)," ");//precord+
DB_LAST_NAME_START);
//set the text for the phone number field
setText(getObject(form, MainPhoneField),"
");//precord+DB_PHONE_NUMBER_START);
}
if(isDirty)
{
//get the index of our field
index = FrmGetObjectIndex(form, MainFirstNameField);
// set the focus to the first name field
FrmSetFocus(form,index);
//set upper shirt on
GrfSetState(false,false,true);
}
MemHandleUnlock(hrecord);
return;
}
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