setting maximum length of TERec structure ( mac)

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vcmac - 27 Apr 2007 10:54 GMT

Hi,

How could we set the maximum lenght of a TERec structure.
We want to set the maximum lenght for extended-edit type in mac to suppose
32767,
How should we do it ?

we coded like as below. But still (*teHandle)->teLength is not modified.
where teHandle is of typr **TERec

if( len > 32767 )
{
    len = 32767;
    HLock ((Handle)teHandle) ;
    (*teHandle)->teLength = len;
    (*teHandle)->selEnd = (*teHandle)->teLength ;
    HUnlock ((Handle)teHandle) ;
}

Please suggest any way to achieve this ?

Thanks and Regards
Sanjaya

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David Phillip Oster - 27 Apr 2007 15:41 GMT

In article
<ad89a2b9c20fdb1ead08c995194e075e@localhost.talkaboutmac.com>,

> Hi,
>
[quoted text clipped - 19 lines]
> Thanks and Regards
> Sanjaya

In my own code, I use a keyDown handler that, after it has checked for
Clear, Left, Right, Up, Down, Home, End, PageUp, PageDown, and backSpace
does:

if(TEMAX -1 <= (**text).teLength){
TellAnyError(MUSTTRUNCATE);
}else{
TEKey(chr, text);
}

With a similar protection on Paste.

There is similar code in LTextEditView.cp

1.) a TE can't handle even 32767 characters. Pick a smaller maximum.
2.) You don't need to lock a teHandle to assign to if from simple
variables.
3.) Rarely do HLock() xxx HUnlock(). What if it were already locked on
entry?
You should use HGetState(); HLock(); xxx HSetState();
4.) Don't assign to selEnd. Use TESetSelection()
5.) You also have to resize the actual hText text handle with
SetHandleSize()

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Mac Forum / Programming / Mac Programming / April 2007

setting maximum length of TERec structure ( mac)