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Posted: **Thu Feb 06, 2020 3:59 pm**

Hi,

Would someone be kind enough to have a look at the following foreign handler definition to see where my error is ?

// Check authorisation to access Events - FAILS ???
// In Objective-C the type returned from authorizationStatusForEntityType is defined as NSInteger 
// which is an int on 32bit processor or long on 64bit processor.

private foreign handler ObjC_EKEventStoreAuthStatus(in pObj as ObjcID,in pEKEntityMaskEvent as CUint) \
			returns CULong \
			binds to "objc:EventKit>EKEventstore.-authorizationStatusForEntityType:"

The is being called by this line :

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put ObjC_EKEventStoreAuthStatus(sEventStore, 0) into tAuthorisationCode

sEventstore is declared with

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private variable sEventStore as optional ObjcObject

and tAuthorisationCode with

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variable tAuthorisationCode as optional Integer

sEventstore has been set to an EKEventstore object using calls to "alloc" and "init". If is tested as not nothing before the call to ObjC_EKEventStoreAuthStatus is made. The first time I initialised sEventstore I was prompted to provide permission so I believe that the creation of the object was successful.

I have been plugging away at this one call for most of the day and do not what else to try. Any thoughts?

Posted: **Sun Feb 09, 2020 4:02 pm**

Answering my own question. The definition that works is like this:

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private foreign handler ObjC_EKEventStoreAuthStatus(in pEKEntityMaskEvent as CUint) \
			returns CULong \
			binds to "objc:EventKit>EKEventStore.+authorizationStatusForEntityType:"

The key is that the method is a class method and not an instance method. So the reference to the instance has to be removed from from the parameters and the prefix to the method changed from a "-" to a "+".

Moral of the storey : Read the documentation, then read it a again.

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Error : Unable to bind foreign handler

Error : Unable to bind foreign handler

Re: Error : Unable to bind foreign handler