[Newbies] Re: How to make FFI work?

[Overcomer Man]

Update 2:
I looked at the InstallFFI4.st and discovered
http://source.squeakfoundation.org/FFI

where I found 'FFI-Kernel-ar.9.mcz',
'FFI-Tests-ar.2.mcz', 'FFI-Examples-ar.1.mcz'
convertable to .zip files by changing the extension.  Then I attempted to
fileIn.
Cuis accepted the Kernal and Tests but failed on the Examples due to
MacIntosh classes which Cuis doesn't support.

Unfortunately that still was insufficient to accept the example at
http://wiki.squeak.org/squeak/2422 but the error is now different:

getFocus
"Return the HWND currently having the input focus"
<apicall:*  return type expected ->*Win32Window 'GetFocus' (void) module:
'user32.dll'>
^self externalCallFailed

So any advice?

I'm under the impression Cuis was never intended to use FFI but to do direct
binary input without a C.dll but unfortunately the details of how to do that
for VideoFlow are also beyond my knowledge.  Where would I learn that?

Thanks,
Kirk Fraser



On Wed, Sep 7, 2011 at 5:53 PM, Overcomer Man <overcomer.man at gmail.com>wrote:

> Update.
> I located the FFI install which works with Squeak 4.2 but fails on Cuis 3.3
>
> http://map.squeak.org/accountbyid/cf58c358-46ee-465e-b6db-2740e9b32a53/files/InstallFFI4.st
>
> That failed with this error walkback:
> UndefinedObject(Object)>>doesNotUnderstand: #location:user:password:
>
> Juan says it uses Monticello not included in Cuis.  Any suggestions on how
> to tweak installFFI4.st to work under Cuis?   Thanks.
>
>
>
> On Wed, Sep 7, 2011 at 12:27 PM, Overcomer Man <overcomer.man at gmail.com>wrote:
>
>> FFI - Foriegn Function Interface example given at
>> http://wiki.squeak.org/squeak/2422 fails to compile under a test class,
>> so it can't work.  The error is expecting a '>' which implies the apicall is
>> wrong.  Since it's example code, it's likely correct and the parser is not
>> working.
>>
>> I assumed it was a failure of FFI to be installed properly in Squeak 4.2
>> All-In-One.  I tried the FFI install .st which gave an error about an
>> unrecognized password.  (I have since been unable to locate that code to put
>> the error and link in this post.)
>>
>> This is confusing since the FFI .dll comes with the All-In-One so it must
>> be used somewhere.
>>
>> Any suggestions?  Getting FFI code to accept is needed in my attempt to
>> load the old video package or try openCV.
>
>
>
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