/// <summary>
/// 使用系统账号向其它用户发送信息
/// </summary>
/// <param name="subject">信息主题</param>
/// <param name="content">信息内容</param>
///<param name="recvUsername">发送者的ID号</param>
/// <returns>返回0， 发送失败；返回1, 发送成功</returns>
public static int SendMessage(string subject, string content, string recvUsername)
{
int res = 0;
IM im = new IM();
im.IMServer = server;
im.ContentType = "Text/Html";
try
{
im.Port = Int32.Parse(port);
}
catch (Exception ex)
{
return res;
}
im.Init(server, username, password);
res = im.SendMsg(subject, content, recvUsername, 0);
return res;
}