/// <summary>
/// 将消息分发给对应的聊天窗口
/// </summary>
public void DistributeToChatForm()
{
try
{
//如果存在，将消息传到这个窗口，如果不存在，创建一个新窗口
//找到当前已经打开的聊天窗口的句柄
string windowsName = "与" + Remoteuser + "聊天中";
IntPtr handle = Find_Windows(null, windowsName);
if (handle != IntPtr.Zero)
{
//进程间通信时，必须对要发送的数据进行编码封装，直接发string类型，收到会出错
byte[] msg_bytes = Encoding.Default.GetBytes(Msgdetail);
int msg_len = msg_bytes.Length;
PreDefine.COPYDATASTRUCT msg_struct;
msg_struct.dwData = (IntPtr)0;//该程序中此变量不被使用
msg_struct.lpData = Msgdetail;
msg_struct.cbData = Encoding.Default.GetBytes(Msgdetail).Length + 1;
Send_Messages(handle, PreDefine.WM_COPYDATA, 0, ref msg_struct);
Flash_Windows(handle, true);
}
else
{
frmChat chatForm = new frmChat(Remoteip, Remoteuser, Remotehostname, Msgdetail);
chatForm.Text = windowsName;
chatForm.WindowState = System.Windows.Forms.FormWindowState.Minimized; //指定窗口状态为最小化状态
chatForm.ShowDialog(); //显示窗口，由于窗口状态为最小化，窗口只在任务栏上显示
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "消息分发出错");
}
}
private void lvwUsers_ItemActivate(object sender, EventArgs e)
{
if (lvwUsers.SelectedItems[0].Index != -1)
{
string windowname = "与" + lvwUsers.SelectedItems[0].SubItems[0].Text + "聊天中";
IntPtr handle = FindChatWindow(null, windowname);
if (handle != IntPtr.Zero)
{
Form frm = (Form)FromHandle(handle);
frm.WindowState = FormWindowState.Normal;
frm.Activate();
}
else
{
string user = lvwUsers.SelectedItems[0].SubItems[1].Text;
string ip = lvwUsers.SelectedItems[0].SubItems[2].Text;
string hostname = lvwUsers.SelectedItems[0].SubItems[3].Text;
frmChat chatform = new frmChat(ip, user, hostname, string.Empty);
chatform.Text = "与" + user + "聊天中";
chatform.Show();
}
}
}