//实时获取未读消息的定时器
private void tmMessage_Tick(object sender, EventArgs e)
{
Point pp = new Point(Cursor.Position.X, Cursor.Position.Y); //获取鼠标在屏幕的坐标点
Rectangle Rects = new Rectangle(this.Left, this.Top, this.Left + this.Width, this.Top + this.Height); //存储当前窗体在屏幕的所在区域
if ((this.Top < 0) && PublicClass.PtInRect(ref Rects, pp)) //当鼠标在当前窗体内，并且窗体的Top属性小于0
{
this.Top = 0; //设置窗体的Top属性为0
}
else
//当窗体的上边框与屏幕的顶端的距离小于5时
if (this.Top > -5 && this.Top < 5 && !(PublicClass.PtInRect(ref Rects, pp)))
{
this.Top = 5 - this.Height; //将QQ窗体隐藏到屏幕的顶端
}
if (lvFriend.SelectedItems.Count > 0) //判断好友列表中有选中项
{
if (lvFriend.SelectedItems[0].Group == lvFriend.Groups[0]) //如果选中项属于第1组
{
tsMenuDel.Visible = true; //显示删除菜单
tsMenuAdd.Visible = false; //隐藏添加好友菜单
}
else if (lvFriend.SelectedItems[0].Group == lvFriend.Groups[1]) //如果选中项属于第2组
{
tsMenuDel.Visible = false; //隐藏删除菜单
tsMenuAdd.Visible = true; //显示添加好友菜单
}
}
int messageTypeID = 1; //消息类型
int messageState = 1; //消息状态
//查找未读消息对应的好友ID
string sql = "select top 1 FromUserID, MessageTypeID, MessageState from tb_Message where ToUserID=" + PublicClass.loginID + " and MessageState=0";
SqlDataReader dataReader = dataOper.GetDataReader(sql); //执行查询
if (dataReader.Read()) //读取未读消息
{
fromUserID = (int)dataReader["FromUserID"]; //记录消息发送者
messageTypeID = (int)dataReader["MessageTypeID"]; //记录消息类型
messageState = (int)dataReader["MessageState"]; //记录消息状态
}
dataReader.Close(); //关闭读取器
DataOperator.connection.Close(); //关闭数据库连接
//消息有两种类型：聊天消息、添加好友消息
//判断消息类型，如果是添加好友消息，启动消息提醒定时器
if (messageTypeID == 2 && messageState == 0)
{
SoundPlayer player = new SoundPlayer("system.wav"); //系统消息提示
player.Play(); //播放指定声音文件
tmAddFriend.Start(); //启动消息提醒定时器
}
//如果是聊天消息，启动聊天定时器，使好友头像闪烁
else if (messageTypeID == 1 && messageState == 0)
{
//获取消息发送者的ID
sql = "select HeadID from tb_User where ID=" + fromUserID;
friendHeadID = dataOper.ExecSQL(sql);//设置发消息好友的头像ID
//如果发消息的人不在好友列表中，将其添加到陌生人列表中
if (!HasShowUser(fromUserID))
{
UpdateStranger(fromUserID); //显示陌生人列表
}
SoundPlayer player = new SoundPlayer("msg.wav"); //聊天消息提示
player.Play(); //播放指定声音文件
tmChat.Start(); //启动聊天定时器
}
}
//拖动窗体
private void Frm_Login_MouseDown(object sender, MouseEventArgs e)
{
PublicClass.ReleaseCapture(); //用来释放被当前线程中某个窗口捕获的光标
PublicClass.SendMessage(this.Handle, PublicClass.WM_SYSCOMMAND, PublicClass.SC_MOVE + PublicClass.HTCAPTION, 0); //向Windows发送拖动窗体的消息
}
//关闭窗体
public void pboxClose_Click(object sender, EventArgs e)
{
PublicClass.AnimateWindow(this.Handle, 800, PublicClass.AW_SLIDE + PublicClass.AW_VER_POSITIVE + PublicClass.AW_HIDE); //动画隐藏窗体
this.FormNowState = FormState.Hide; //设定当前窗体的状态为隐藏
}