private void frendLv_MouseDown(object sender, MouseEventArgs e)
{
//用来释放被当前线程中某个窗口捕获的光标
PubCls.ReleaseCapture();
//向Windows发送拖动窗体的消息
PubCls.SendMessage(this.Handle, PubCls.WM_SYSCOMMAND, PubCls.SC_MOVE + PubCls.HTCAPTION, 0);
}
public Main_Frm()
{
InitializeComponent();
//控制ListVIew的行距和列距
//70为行距，120为列距（跟图片大小有关）
PubCls.SendMessage(this.friendLv.Handle, PubCls.LVM_SETICONAPACING, 0, 0x10000 * 70 + 130);
}
/// 实时获取未读消息的定时器
private void MsgTim_Tick(object sender, EventArgs e)
{
//获取鼠标在屏幕的坐标点
Point pp = new Point(Cursor.Position.X, Cursor.Position.Y);
//存储当前窗体在屏幕的所在区域
Rectangle rect = new Rectangle(this.Left, this.Top, this.Left + this.Width, this.Top + this.Height);
//当鼠标在当前窗体内，并且窗体的Top属性小于0
if (this.Top < 0 && PubCls.PtInRect(ref rect, pp))
{
this.Top = 0;
}
else
if (this.Top > -5 && this.Top < 5 && !PubCls.PtInRect(ref rect, pp)) //当窗体的上边框与屏幕的顶端的距离小于5时
{
this.Top = 5 - this.Height; //将QQ窗体隐藏到屏幕的顶端
}
JudgeSelected();
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 sqlStr = "select top 1 FromUserID, MessageTypeID, MessageState from tb_Message where ToUserID=" + PubCls.loginID + " and MessageState=0";
SqlDataReader dataReader = dataOprt.GetDataReader(sqlStr);
//读取未读消息
if (dataReader.Read())
{
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();
dataOprt.CloseCnn();
//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");
player.Play();
addFriendTim.Start();
}
else if (messageTypeID == 1 && messageState == 0) //如果是聊天消息，启动聊天定时器，使好友头像闪烁
{
//获取消息发送者的ID
sqlStr = "select HeadID from tb_User where ID=" + fromUserID;
friendHeadID = dataOprt.ExecSQL(sqlStr); //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
chatTim.Start(); //启动聊天定时器
}
}