willChange method

void willChange(
  1. NSKeyValueChange changeKind, {
  2. required NSIndexSet valuesAtIndexes,
  3. required NSString forKey,
})

willChange:valuesAtIndexes:forKey:

Implementation

void willChange(
  objc.NSKeyValueChange changeKind, {
  required objc.NSIndexSet valuesAtIndexes,
  required objc.NSString forKey,
}) {
  objc.checkOsVersionInternal(
    'NSObject.willChange:valuesAtIndexes:forKey:',
    iOS: (false, (2, 0, 0)),
    macOS: (false, (10, 0, 0)),
  );
  _objc_msgSend_1diehjo(
    this.ref.pointer,
    _sel_willChange_valuesAtIndexes_forKey_,
    changeKind.value,
    valuesAtIndexes.ref.pointer,
    forKey.ref.pointer,
  );
}