On Sat, 14 Mar 2009, Vailton Renato wrote:
Hi,
> I am migrating some routines for Harbour and noticed the absence of
> HB_FUNCPTR() that I used before. I came to develop the same function
> in Harbour and after researching the sources I found __DYNSN2SYM()
> which has the same purpose.
> I would like to suggest it was placed within the file hbcompat.ch the
> following line:
> #xtranslate HB_FUNCPTR(<x>) => __DYNSN2SYM (<x>)
> In order to make the conversion automatically.
Viktor already added it but please remember that it's not exactly
the same.
In Harbour type of function symbol is "S". In xHarbour it's simple
pointer item: "P". So the C code will not be compatible.
To use function symbols in Harbour you do not need any special
functions. You can simply create them using macro compiler:
sFunc := &("@str()")
? sFunc:name()
? sFunc:eval( 123.45, 10, 5 )
Probably any xHarbour code which operates on function pointers
can be ported to Harbour and only the places which checks item
type should be updated but reverted conversion may not be possible.
Just simply xHarbour accepts any pointer item as function symbol
without any verification so it will GPF for wrong pointer item
types.
best regards,
Przemek
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