I believe the error has something to do with my DmGetRecord call.
The exact error I'm getting is: "DataMgr.c, Line:7821, Index out of range"
Timothy Astle <[EMAIL PROTECTED]> wrote in message
news:8149@palm-dev-forum...
>
> I'm assuming the problem is in GetValue, because I really wrote that off
the
> top of my head because I didn't know how to grab a piece of data from the
> database. I used the packValue function to add data to the database, and
> that seems to run okay. (can't completely test it because I can't get the
> info I put into it to display.... which is what I'm trying to do now :-)
>
> Now, I based this whole packing and unpacking off the O'Reilly Sales
> example. Assuming that one works... it should work for my scenario :-)
>
>
>
>
> void UnpackValue(tblValuePtr value, const tblPackedValuePtr packedValue)
> {
> const char *s = packedValue->Strings;
> value->ValueID = packedValue->ValueID;
> value->BeginningValue = packedValue->BeginningValue;
> value->EndingValue = packedValue->EndingValue;
> value->TotalValue = packedValue->TotalValue;
> value->Number = s;
> s += StrLen(s) + 1;
> value->VNumber = s;
> s += StrLen(s) + 1;
> value->Driver = s;
> s += StrLen(s) + 1;
> value->StartDate = s;
> s += StrLen(s) + 1;
> value->EndDate = s;
> s += StrLen(s) + 1;
> value->Origin = s;
> s += StrLen(s) + 1;
> value->Destination = s;
> s += StrLen(s) + 1;
> }
>
>
> ValueID is a UInt
> BeginningValue, EndingValue, TotalValue are floats
> The rest are Strings
>
> Basically, my methodology was that I'd create a function that called my
> "Unpack" function, get the value of the field I needed, returned it so
that
> I could display it in a Field. However, I'm not certain of a way to
display
> floats in the Field box, so I tried to convert the float into a CharPtr
for
> display purposes.
>
> --
>
> Timothy Astle
>
>
> McMicken, Steven <[EMAIL PROTECTED]> wrote in message
> news:8146@palm-dev-forum...
> >
> > Have you localized the problem to the GetValue function? The problem
> could
> > be in the UnpackValue code. Are you allocating memory for the CharPtr
in
> > the program that calls GetValue? These are just guesses, without more
> code,
> > I can't suggest much more.
> >
> > Regards,
> >
> > Steve
> >
> > -----Original Message-----
> > From: Timothy Astle [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, April 13, 2000 10:08 AM
> > To: Palm Developer Forum
> > Subject: Re: Simple example needed
> >
> >
> > This is something I tried so that I could just Get a value from the
> database
> > so that I could display it.
> >
> > theValue.BeginningValue is a floating point number.
> > UniqueID is just the record's ID tag
> >
> > CharPtr GetValue(UInt UniqueID)
> > {
> > tblValue theValue;
> >
> > VoidHand valueHandle = DmGetRecord(gValueDB, UniqueID);
> > UnpackValue(&theValue, MemHandleLock(valueHandle));
> > MemHandleUnlock(valueHandle);
> >
> > return ((CharPtr)&theValue.BeginningValue);
> > }
> >
> > What I'm using to display the information is:
> > SetFieldTextFromStr(NfoStartofValueValueField, GetValue(1));
> >
> > Where it takes the CharPtr and places it in the Field.
> >
> > It compiles, etc, but when I run it, I get a DataManager error. My best
> > guess is that it has to do with the way I'm attempting to get the value
> from
> > the database... I dunno. I figure I'm probably going about this all the
> > wrong way, but if someone could please help, I'd appreciate it.
> >
> > --
> >
> > Timothy Astle
> >
> >
> >
> >
> >
> >
> >
> >
> > Timothy Astle <[EMAIL PROTECTED]> wrote in message
> > news:8137@palm-dev-forum...
> > >
> > > I have 3 databases set up, and 6 structures (packed and unpacked
> > versions).
> > > I also have packing and unpacking funcitons set up.
> > >
> > > I was wondering if anyone had a "stripped down" piece of code that
> allowed
> > > me to simply ADD and DELETE records.
> > >
> > > Any small example would be great, because I could take it from there
and
> > > expand upon it.
> > >
> > > Sincerely,
> > >
> > > Timothy Astle
> > >
> > >
> > >
> > >
> >
> >
> >
> > --
> > For information on using the Palm Developer Forums, or to unsubscribe,
> > please see http://www.palm.com/devzone/mailinglists.html
> >
> >
>
>
>
>
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