[Mono-list] Embedded API: calling explicit interface properties

Jonathan Mitchell jonathan at mugginsoft.com
Tue Jul 15 15:31:23 UTC 2014

On 15 Jul 2014, at 14:50, Robert Jordan <robertj at gmx.net> wrote:

> On 15.07.2014 13:24, Jonathan Mitchell wrote:
>> Hi
>> I have a class that implements the following two interfaces and I am having trouble accessing explicit interface properties via the embedded API.
> IIRC, the name of properties (and methods) of explicit interfaces
> must be prefixed with the interface name, e.g.:
> [self getMonoProperty:"IReferenceObject2_ExIntTestProperty"]
> I'm not sure about the delimiter, but I believe it's "_".
Thanks for the tip.

Looking at the ReferenceObject I can see that there is a namespace + interface name prefix before the getter and setter functions.

2014-07-15 15:55:10.904 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:get_ExIntTestProperty ()
2014-07-15 15:55:10.904 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:set_ExIntTestProperty (bool)
2014-07-15 15:55:10.904 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:Dubrovnik.UnitTests.IReferenceObject2.get_ExIntTestProperty ()
2014-07-15 15:55:10.905 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:Dubrovnik.UnitTests.IReferenceObject2.set_ExIntTestProperty (single)
2014-07-15 15:55:10.905 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:Dubrovnik.UnitTests.IReferenceObject1.get_ExIntTestProperty ()
2014-07-15 15:55:10.905 otest[16383:303] Method name: Dubrovnik.UnitTests.ReferenceObject:Dubrovnik.UnitTests.IReferenceObject1.set_ExIntTestProperty (int)

When using the IReferenceObject1 I see the accessors without the prefix and reporting the correct argument type.
To me it looks like we are good to go - but the the unit test still fails.
Perhaps I am sort of expecting the C API to behave like its managed counterpart in this case and allow me to access the explicit property through the interface.
I also build my property get method names up explicitly from the property name rather than using mono_class_get_property_from_name.
I will have to dig into this a bit more.

2014-07-15 16:01:44.555 otest[16444:303] Method count : 2
2014-07-15 16:01:44.555 otest[16444:303] Method name: Dubrovnik.UnitTests.IReferenceObject1:get_ExIntTestProperty ()
2014-07-15 16:01:44.556 otest[16444:303] Method name: Dubrovnik.UnitTests.IReferenceObject1:set_ExIntTestProperty (int)


2014-07-15 16:01:44.557 otest[16444:303] Method name: Dubrovnik.UnitTests.IReferenceObject2:get_ExIntTestProperty ()
2014-07-15 16:01:44.558 otest[16444:303] Method name: Dubrovnik.UnitTests.IReferenceObject2:set_ExIntTestProperty (single)


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