Callback on a CLang code block?

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#571 7 comments 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
java, macos, objective-c
Domain
desktop

Research direction

Start by reading JNA's Callback support and comparing it with the xpc_connection_set_event_handler signature and Objective-C block types shown in the issue. Determine whether the requested callback form can be supported and identify a minimal test or documented limitation; done means the behavior is demonstrated or the limitation is clearly recorded.

Written by the indexing model from the issue text.

Description

feature request

Hi.

I am trying to call a method on OSX that takes a closure (CLang Block) as an argument. The method is xpc_connection_set_event_handler and the signature is as follows:

typedef void (*xpc_connection_handler_t)(xpc_connection_t connection);

typedef void (^xpc_handler_t)(xpc_object_t object);

void xpc_connection_set_event_handler(xpc_connection_t connection, xpc_handler_t handler);

Right now I am calling it using a JNA Callback but that does not seem to work. Anyone that have done the same or similar calling to a closure (or code block)?

BR,
Sten Roger

Dominant language
Java
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