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Objects and flls
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De
05/07/1999 17:24:52
 
 
À
05/07/1999 17:19:07
Information générale
Forum:
Visual FoxPro
Catégorie:
Fonctions Windows API
Divers
Thread ID:
00237383
Message ID:
00237584
Vues:
12
>>>Has anyone had experience with passing object references to a function in an fll? I have been successful in passing an object reference in and returning it to another variable. There is much I do not understand.
>>>
>>>ev_object is the same for every object that is passed durring a VFP session, I had assumed that it would be unique for each object. For what is it good?
>>>
>>>From http://msdn.microsoft.com/LIBRARY/DEVPRODS/VS6/VFOXPRO/HTML/DGACCESSING_THE_VISUAL_FOXPRO_API.HTM:
>>>
>>>"Note To return the value of an object data type, use the _RetVal() function, filling in the ev_object field in the Value structure."
>>>
>>>Filling with what?
>>
>>Since no one else is responding, I'll take a stab at it. Do you know what language the fll is written in?
>
>Yes, since I am writing the fll. MSVC++.

I was attempting to do something similar, but was told it was not possible. They said that C stores objects differently than VFP. Actually, I would be interested in anything you learn about this.

Dan
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