fromFunctionPointer static method

ObjCBlock<NSView Function(Pointer<Void>, UnsignedLong, Pointer<NSRange>)> fromFunctionPointer(
  1. Pointer<NativeFunction<Pointer<ObjCObject> Function(Pointer<Void> arg0, NSUInteger arg1, NSRangePointer 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<
  NSView Function(
    ffi.Pointer<ffi.Void>,
    ffi.UnsignedLong,
    ffi.Pointer<NSRange>,
  )
>
fromFunctionPointer(
  ffi.Pointer<
    ffi.NativeFunction<
      ffi.Pointer<objc.ObjCObject> Function(
        ffi.Pointer<ffi.Void> arg0,
        NSUInteger arg1,
        NSRangePointer arg2,
      )
    >
  >
  ptr,
) =>
    objc.ObjCBlock<
      NSView Function(
        ffi.Pointer<ffi.Void>,
        ffi.UnsignedLong,
        ffi.Pointer<NSRange>,
      )
    >(
      objc.newPointerBlock(
        _ObjCBlock_NSView_ffiVoid_NSUInteger_NSRangePointer_fnPtrCallable,
        ptr.cast(),
      ),
      retain: false,
      release: true,
    );