On 19/02/2017 17:32, Christoph Egger wrote: > Hi! > > [0] discusses how to pass a callback to some C library. Now I would like > to pass a function from some C library to some C library. Is there a > better way to express this than using <cCall ...> to get a smalltalk > function and CCallbackDescriptor to pass it back?
You can get the address of a C function with something like CFunctionDescriptor addressOf: 'unlink' If the function is not defined, the returned object will satisfy #isNull: st> (CFunctionDescriptor addressOf: 'unlink') isNull false st> (CFunctionDescriptor addressOf: 'aaa') isNull true Paolo > Christoph > > [0] > https://www.gnu.org/software/smalltalk/manual/html_node/Smalltalk-callbacks.html > > > > _______________________________________________ > help-smalltalk mailing list > help-smalltalk@gnu.org > https://lists.gnu.org/mailman/listinfo/help-smalltalk >
signature.asc
Description: OpenPGP digital signature
_______________________________________________ help-smalltalk mailing list help-smalltalk@gnu.org https://lists.gnu.org/mailman/listinfo/help-smalltalk
