Delegate OutputStreamClassData.WriteAsyncCallback
public delegate void OutputStreamClassData.WriteAsyncCallback(IntPtr stream, ref byte buffer, nuint count, int ioPriority, IntPtr cancellable, AsyncReadyCallback callback, IntPtr userData)
public delegate void OutputStreamClassData.WriteAsyncCallback(IntPtr stream, ref byte buffer, nuint count, int ioPriority, IntPtr cancellable, AsyncReadyCallback callback, IntPtr userData)