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kotlinlang

Got a question about "
```kotlinx.cinterop.staticCFunction```
" when called as a callback from C . (Thread/SO link)

<https://stackoverflow.com/questions/59707350/how-to-avoid-the-error-staticcfunction-must-take-an-unbound-in-kotlin-nativ>

As far as I know, you can't. Which sucks.

There are some workarounds depending on the situation. For example a Kotlin class that takes a `CPointer` (in the primary constructor) can be instantiated in the event handler, which is handy when the state/functionality is being passed through to the event handler as a `CPointer`. The class instance uses that `CPointer`  to access the state/functionality.

Can find an example of that technique here: <https://gitlab.com/gui-vista/samples/imageshow-sample/blob/master/src/linuxX64Main/kotlin/main.kt#L62>

You can pass Kotlin Function to C method by declare it outside class or object

For example :
`fun example(inputPointer: COpaquePointer?) { println(inputPointer.reinterpret&lt;String&gt;()) } // Globally`

`//Then pass it like.`

`anyCMethod(staticCFunction(::example).reinterpret(), "hello".cstr/* input parameter for your function*/)`


I explained it in simple way.