Re: maintain the input value in a Field

[Narayana Moorthi]

hi,

 i am also a newly learning palm devoloper. I do not know whether your 'GetObjectPtr' in      fldP = GetObjectPtr(ApgarInput);
is your own method. if not u should use FrmGetObjectPtr(pointer to form, objectindex). the prototype and definition is:

Prototype

void *FrmGetObjectPtr (
   const FormType *formP,
   uint16_t objIndex
)

Parameters

→ formP

Pointer to the form.

→ objIndex

Index of an element in the form. You can obtain this by using FrmGetObjectIndex().

and continue with FldInsert().

 

you are getting error because your program does not know which form (memory) should it access. try this and and kindly let me know if you are  able to get the answer.

 

But to efficiently insert text use  FldGetTextHandle()   method.

 

On 11/6/06, Jorge Vasquez <[EMAIL PROTECTED]> wrote:

Hi again,
I think that I am lost as to how manage String in general in Palm.  I
come from JAVA background so please have a little patience.
I have the following code fragment which is causing me pain:

...
               case frmOpenEvent:
                       pForm = FrmGetActiveForm();
                       FrmSetFocus(pForm, FrmGetObjectIndex(pForm, ApgarInput));
                       //Agregar el valor de Apgar previamente ingresado
                       if (valorApgar != 0) {
                               fldP = GetObjectPtr(ApgarInput);
                               FldInsert(fldP, valorApgar, StrLen(valorApgar));
                       }

I have a global pointer variable valorApgar which is a pointer to the
formerly introduced text in the Field and which I obtain as following:

valorApgar = FldGetTextPtr(fldP);

the global variable valorApgar is declared as follows:

static Char*    valorApgar;

I am getting an error related to an invalid access of memory but to be
honest I AM LOST!!!

Thanks and regards,
JV

On 11/5/06, Jorge Vasquez <[EMAIL PROTECTED]> wrote:
> Regards,
>
> I am a Palm beginner and I would like to know if somebody can help me
> with code examples to the following 2 problems:
>
> 1.  Maintain the previous field value entered by a user in a form.
> (The specific scenario consists of a wizard-type application, where
> the user has the possibility of navigating between forms and whenever
> he goes back I need to maintain the previous values that he/she
> entered for each field)
> 2.  Validate if the input value in a field is an integer.
>
>
> Thanks to all,
> --
> Jorge Andres Vasquez
>
> --
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>


--
Jorge Andres Vasquez

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