Robert Purves a écrit :
> 
> Alain Pastor wrote:
> 
>> Bernie a écrit :
>>
>>> I'm curious. Is it advisable to dispose of the old icon after  
>>> setting  the new one?
>>
>> I'm not sure it is necessary if the resource handle is not detached  
>> and the resource is made purgeable.
> 
> 
> It is clear that you must dispose of a CIconHandle obtained with  
> GetCIcon. Apple says of GetCIcon:
> "When you are finished with a handle obtained from this function, use  
> the DisposeCIcon function to release the memory occupied by the color  
> icon structure."
> 
> And in relation to bevel button controls:
> "Please keep in mind that resource-based content is owned by the  
> control, handle-based content is owned by you. The CDEF will not try  to 
> dispose of handle-based content."
> 
> 
Thanks Robert,

However my doubts are not fully dissipated.
What happens when you close such a control or the window to which it 
belongs?
Do you have to dispose of the CIcon handle beforehand?
I'm inclined to think this is not the case and I venture a built-in 
mechanism may be implemented at the Toolbox level.
My doubts once again come from the interpretation of the term 
resource-based control in the second paragraph, because I believe that 
when you use GetCIcon you get a resource handle. I might be wrong though.
Of course, if the CIconHandle is duplicated when setting the control 
data, I guess the DisposeCIcon call is in order after using the Def 
SetButtonData command.

Alain