Hi,
your fields must have a handle set (they have by default).
In "sudo_ins" you call FldSetFieldPtr with an empty (probably also
constant) string so that any attempt to write to it is an error.
You can use FldDelete to clear the field instead.
I also don't think you have to handle fldEnterEvent, simply handle
keyDownEvent, get the current field (FrmGetFocus) and verify that
it is a corerct value for that field
(eg. eventP->data.keyDown.chr ~ [1..9] :) and simply return true
from your event handler if it isn't (so that the field won't
ever see that key).
Regards,
Miro
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] On Behalf Of René
>Kjellerup
>Sent: Thursday, July 13, 2006 00:27
>To: Palm Developer Forum
>Subject: Using Fields
>
>Hi',
>
>I'm some what new to PalmOS development, I have read about
>some APIs which I think I need to do what I want. However I
>seem to get a crash in my code when do.
>
>I've added the main files, the prc-tool GUI design, and the
>main form event handler, with some custom drawings.
>
>All my 81 fields can max contain 1 charater and they can only
>be a number, it's, if couldn't guess it, for a sudoku
>interface, and I'd like to know how to handle the charater
>input as it happens. I've read that this isn't the preferable
>way to do things when working with fields but the other way
>doesn't seem to apply in my case.
>
>My guess is to use the "FldHandleEvent()" function, but how and where?
>
>My Thanks for any help in this matter.
>
>René Kjellerup
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