createEventHandlerGroup method

IUIAutomationEventHandlerGroup? createEventHandlerGroup()

Registers one or more event listeners in a single method call.

Throws a WindowsException on failure.

To learn more, see learn.microsoft.com/windows/win32/api/uiautomationclient/nf-uiautomationclient-iuiautomation6-createeventhandlergroup.

Implementation

IUIAutomationEventHandlerGroup? createEventHandlerGroup() {
  final handlerGroup = adaptiveCalloc<VTablePointer>();
  final hr$ = HRESULT(_CreateEventHandlerGroupFn(ptr, handlerGroup));
  if (hr$.isError) {
    free(handlerGroup);
    throw WindowsException(hr$);
  }
  final result$ = handlerGroup.value;
  free(handlerGroup);
  if (result$.isNull) return null;
  return .new(result$);
}