Re: [MACTCL] Re: Tip #242 implementation

[Brian G. <bri...@ea...>]

Ah!  Well, I could not find any definition of Str255 in the docs I 
have.  That would have helped.

Thanks!
-Brian

On Jun 4, 2005, at 1:11 PM, Jim Ingham wrote:

> menuItemName is a Str255:
>
> struct NavMenuItemSpec {
>    UInt16 version;
>    OSType menuCreator;
>    OSType menuType;
>    Str255 menuItemName;
>    char reserved[245];
> };
>
> Str255 is a typedef for a 255 character Pascal string.  Pascal strings 
> have the first byte as the length, and the rest is the string.  They 
> aren't guaranteed to be null-terminated, so you actually want to do:
>
> int len = strlen(filterPtr->name);
> strncpy(&selectItem.menuItemName[1], filterPtr->name, len);
> selectItem.menuItemName[0] = len;
>
> if you want to copy a C string to a Pascal string.  You might want to 
> make sure len < 255 as well.
>
> Jim
>
> On Jun 4, 2005, at 11:29 AM, Brian Griffin wrote:
>
>> After much trial and error, I determined that this makes it work:
>>
>>    strncpy(&selectItem.menuItemName[1], filterPtr->name, 
>> strlen(filterPtr->name));
>>
>> Why the menuItemName begins at location [1] is a mystery to me and is 
>> not mentioned anywhere that I've read.
>>
>> -Brian
>>
>>
>> On Jun 2, 2005, at 8:41 PM, Brian Griffin wrote:
>>
>>
>>> Hi folks,
>>>
>>> I've been banging on this for several hours now and am completely 
>>> stumped.  I'm trying to pre-set the filter in the GetFileDialog, but 
>>> it just doesn't work.  I'm calling NavCustomControl(dialogRef, 
>>> kNavCtlSelectCustomType, &menuItem); As far as I can tell from 
>>> everything I've read, this the call that supposed to do it, but 
>>> nothing happens; it continues to select the first entry.  A google 
>>> search turns up others running into the same problem, but I haven't 
>>> found any answers to the problem.  So what gives? Am I using the 
>>> wrong approach? Is there some magic spell or wave of the wand that 
>>> I'm missing?
>>>
>>> By the way, the other half of the TIP, returning the last selected 
>>> filter works just fine.  I thought that would be the hard part. :-)
>>>
>>> Thanks,
>>> -Brian
>>>
>>>
>>>
>>
>>
>>
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