/// <summary>
/// Initializes RecvCallBackParam
/// </summary>
/// <param name="lstBox_statu">a listbox that show information</param>
/// <param name="frd">a online user</param>
/// <param name="appendString">append string to listbox</param>
/// <param name="IsStart">whether start listening</param>
public RecvCallBackParam(ListBox lstBox_statu, MyFriend frd,
DelegateMem.AppendDelegate appendString, bool IsStart)
{
this.lstBox_statu = lstBox_statu;
this.frd = frd;
this.appendString = appendString;
this.IsStart = IsStart;
} // RecvCallBackParam
/// <summary>
/// Initializes RecvCallBackParam
/// </summary>
/// <param name="frd">online user</param>
public SendCallBackParam(MyFriend frd)
{
this.frd = frd;
} // SendCallBackParam
