fromFunctionPointer static method

ObjCBlock<Pointer<ObjCObject>? Function(Pointer<Void>, Long, Long)> fromFunctionPointer(
  1. Pointer<NativeFunction<Pointer<ObjCObject> Function(Pointer<Void> arg0, NSInteger arg1, NSInteger arg2)>> ptr
)

Creates a block from a C function pointer.

This block must be invoked by native code running on the same thread as the isolate that registered it. Invoking the block on the wrong thread will result in a crash.

Implementation

static objc.ObjCBlock<
  ffi.Pointer<objc.ObjCObject>? Function(
    ffi.Pointer<ffi.Void>,
    ffi.Long,
    ffi.Long,
  )
>
fromFunctionPointer(
  ffi.Pointer<
    ffi.NativeFunction<
      ffi.Pointer<objc.ObjCObject> Function(
        ffi.Pointer<ffi.Void> arg0,
        NSInteger arg1,
        NSInteger arg2,
      )
    >
  >
  ptr,
) =>
    objc.ObjCBlock<
      ffi.Pointer<objc.ObjCObject>? Function(
        ffi.Pointer<ffi.Void>,
        ffi.Long,
        ffi.Long,
      )
    >(
      objc.newPointerBlock(
        _ObjCBlock_objcObjCObject_ffiVoid_NSInteger_NSInteger_fnPtrCallable,
        ptr.cast(),
      ),
      retain: false,
      release: true,
    );