C # Builder implementation of the monitor of POP3 mailbox

/// Required Method for Designer Support - Do Not Modify /// The Contents of this Method with the code editor.

///

Private vidinitiRizeComponent ()

{

This.Components = new system.componentmodel.container ();

System.Resources.ResourceManager Resources = New System.Resources.ResourceManager (TypeOf (Winform1));

this.timer1 = new system.windows.forms.timer (this.components);

this.timer2 = new system.windows.forms.timer (this.components);

This.timer3 = new system.windows.Forms.timer (this.components);

This.LinkLabel1 = new system.windows.forms.linklabel ();

THIS.SUSPENDLAYOUT ();

//

// Timer1

//

THIS.TIMER1.ITERVAL = 10;

This.Timer1.Tick = new system.eventhandler (this.timer1_thing);

//

// Timer2

//

THIS.TIMER2.ITERVAL = 10;

This.Timer2.Tick = new system.eventhandler (this.timer2_tick);

//

// Timer3

//

THIS.TIMER3.ITERVAL = 10;

This.Timer3.Tick = new system.eventhandler (this.timer3_tick);

//

// linklabel1

//

THISLINKLABEL1.AUTOSIZE = True;

THIS.LINKLABEL1.BACKCOLOR = system.drawing.color.whitesmoke;

This.LinkLabel1.Location = new system.drawing.point (56, 56);

This.LinkLabel1.Name = "LinkLabel1";

This.LinkLabel1.size = new system.drawing.size (79, 17);

this.linklabel1.tabindex = 0;

THISLINKLABEL1.TABSTOP = TRUE;

This.LinkLabel1.Text = "You have new emails!";

//

// Winform1

//

THIS.AUTOSCALEBASESIZE = New System.drawing.size (6, 14);

THIS.BACKCOLOR = system.drawing.systemcolors.Info;

THIS.BACKGROUNDIMAGE = ((System.drawing.Image) ("$ this.BackgroundImage))))))))

THIS.CLIENTSIZE = New System.drawing.size (194, 122);

This.Controls.add (this.LinkLabel1); this.formborderstyle = system.windows.forms.formorderstyle.none;

THIS.NAME = "WinForm1";

THIS.SHOWINTASKBAR = FALSE;

This.Text = "Information Tips";

THIS.TOPMOST = True;

This.Load = New System.EventHandler (this.winform1_load);

THIS.Activated = new system.EventHandler (this.winform1_actiVated);

This.ResumeLayout (false);

}

#ndregion

Private void Winform1_Load (Object Sender, System.EventArgs E)

{

Screen [] screens = screen.allscreens;

Screen Screen = Screens [0];

THIS.LOCATION = New Point (Screen.workingArea.width - 200, Screen.workingArea.Height - 30);

this.timer2.interval = 5000;

}

Private void scrollup ()

{

IF (Height <122)

{

THISHEIGHT = 3;

THIS.LOCATION = New Point (this.location.x, this.location.y - 3);

}

Else

{

this.timer1.enabled = false;

this.timer2.enabled = true;

}

}

Private void scrolldown ()

{

IF (HEIGHT> 3)

{

THIS.HEIGHT - = 3;

This.location = new point (this.location.x, this.location.y 3);

}

Else

{

THIS.TIMER3.ENABLED = FALSE;

THIS.CLOSE ();

}

}

Private void Timer1_Tick (Object Sender, System.EventArgs E)

{

Scrollup ();

}

Private void Timer2_Tick (Object Sender, System.EventArgs E)

{

Timer2.enabled = false;

Timer3.enabled = true;

}

Private void Timer3_Tick (Object Sender, System.EventArgs E)

{

ScrollDown ();

}

Public void scrollshow ()

{

THIS.WIDTH = 194;

THIS.HEIGHT = 0;

THIS.SHOW ();

THIS.TIMER1.ENABLED = TRUE;

}

Private Void Winform1_Activated (Object Sender, System.Eventargs E)

{

Linklabel1.text = "You have" str_num "new mail!"

}

}

}

Specific implementation, you can refer to an article on the Internet: "Writing the MSN Messager scrolling window with VC #", it has not been clear, you can pass this network http://yousoft.hi.com.cn/ Article_view.asp? id = 6595 browse.

3. Get the implementation of the number of emails, the code is shown in:

String STR_SERVER;

IF ((tb_server.text! = ") && (tb_user.text! =" ") && (tb_pwd.text! ="))

{

TcpClient TCPC = New TcpClient (TB_SERVER.TEXT, 110);

UTE [] outbytes;

String input;

NetWorkstream ns = NULL;

Try {

NS = tcpc.getStream ();

StreamReader SR = New StreamReader (NS);

TB_STATUS.TEXT = Sr.Readline ();

Input = "user" TB_USER.TEXT "/ R / N";

Outbytes = system.text.Encoding.ascii.getbytes (Input.tochararray ());

NS.Write (Outbytes, 0, Outbytes.Length)

Tb_status.text = tb_status.text "/ r / n" sr.readline ();

Input = "pass" tb_pwd.text "/ r / n";

Outbytes = system.text.Encoding.ascii.getbytes (Input.tochararray ());

NS.Write (Outbytes, 0, Outbytes.Length)

Tb_status.text = tb_status.text "/ r / n" sr.readline ();

INPUT = "stat" "/ r / n";

Outbytes = system.text.Encoding.ascii.getbytes (Input.tochararray ());

NS.Write (Outbytes, 0, Outbytes.Length)

Str_server = sr.readline ();

STR_NUM = ""

IF (str_server.startswith (" ok")) {

STR_NUM = STR_SERVER.SPLIT ('') [1];

} else str_num = ""

Tb_status.text = TB_STATUS.TEXT "/ R / N" "A:" STR_SERVER;

INPUT = "quit" "/ r / n";

Outbytes = system.text.Encoding.ascii.getbytes (Input.tochararray ());

NS.Write (Outbytes, 0, Outbytes.Length)

Tb_status.text = tb_status.text "/ r / n" "B:" sr.readline ();}

Catch (InvalidOperationException IoE) {

TB_STATUS.TEXT = "Could Not Connect To Mail Server";

}

IF (str_num! = "") {

Winform1 Form = New Winform1 ();

Form.STR_NUM = STR_NUM;

Form.ScrollShow ();

}

The program creates a TCP connection with the mail server, then send some commands of POP3, take the information transmitted by the server to get the number of messages.

There are two numbers in the response of the stat command, indicating the number of messages, and the size of the message. The general format is such a " OK quantity size"

So, simply extract OK according to the information returned by the server, and then separate the space separately. See the code.

4. Reading and writing of the registry:

We know, to implement the program after boot, you can implement it by writing registry hkey_current_user / suftware / microsoft / windows / currentversion / run implementation

In addition, in order to facilitate the user, we store mail servers, users, passwords and other information into the registry, and don't have to lose once each time.

The saving information code is as follows:

RegistryKey RK;

Registry.currentuser.createSubKey ("Software // YOSOFT");

RK = registry.currentuser.opensubKey ("Software // YOUSOFT", TRUE

RK.SetValue ("Server", TB_SERVER.TEXT);

RK.SetValue ("User", TB_USER.TEXT);

RK.SetValue ("PWD", TB_PWD.TEXT);

RK.SetValue ("Interval", TB_Mins.Text);

IF (CB_AUTORUN.CHECKED) {

RK = registry.currentuser.opensubKey ("Software // Microsoft // Windows // CurrentVersion // Run", true);

RK.SetValue ("Chkmail", Application.executablePath;

Else

{

RK = registry.currentuser.opensubKey ("Software // Microsoft // Windows // CurrentVersion // Run", true);

RK.DeleteValue ("chkmail");

}

RK.Close ();

Read information when starting the program:

Private Void Winform_Load (Object Sender, System.EventArgs E)

{

RegistryKey RK;

RK = registry.currentuser.opensubKey ("Software // YOUSOFT", FALSE);

Object SRV = RK.GetValue ("Server");

IF (SRV! = null) TB_SERVER.TEXT = SRV.TOSTRING ();

Object usr = rk.getValue ("User"); if (usr! = null) TB_USER.TEXT = usr.tostring ();

Object PWD = RK.GetValue ("PWD");

IF (PWD! = NULL) TB_PWD.TEXT = PWD.TOSTRING ();

Object mins = rk.getValue ("interval");

IF (mins! = null) TB_Mins.Text = mins.tostring ();

RK.Close ();

}

The full code of WinForm is as follows:

Using system;

Using system.drawing;

Using system.collections;

Using system.componentmodel;

Using system.windows.forms;

Using system.data;

Using system.net.sockets;

Using system.io;

Using system.net;

USING Microsoft.win32;

Namespace POP3

{

///