, , , , , . . . ( Paint), , . Paint. - :
private void Form_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
, e. :
Graphics dc = e.Graphics;
.
. .
Paint Invalidate(), System.Windows.Forms.Form. . , . .
2.
, , 150 5 .
1. Form1 :
private int xWidth;
2. - Paint, Paint . , :
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics dc = e.Graphics;
dc.DrawRectangle(Pens.RoyalBlue,10,100,xWidth,50);
}
3. Timer Toolbox, Enable true Interval 150.
4. - . , :
private void timer1_Tick(object sender, System.EventArgs e)
{
xWidth += 5;
Invalidate();
}
. .
:
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3. ?
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5. , ?
6. , ?
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16. , Paint, ?
17. , Paint?
:
1. , .
2. , , .
3. , ( ).
4. , .
5. , , .
6. , .
7. , , ( ).
8. , , ( ).
9. , 8.
10. , 8.
7
, , . . . . . , .
MainMenu, ContextMenu MenuItem, Menu. Menu MenuItemCollection, MainMenu, ContextMenu MenuItem.
MainMenu:
public MainMenu()
public MainMenu (MenuItem[] menuItems)
public MainMenu (IContainer container)
MainMenu, Menu MainMenu. Menu , . , .
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ContextMenu:
public ContextMenu ()
public ContextMenu (MenuItem[] menuItems)
, , , . , , ContextMenu , Contol. ContextMenu , .
. , :
public void Show (Control control, Point pos),
, , , .
MenuItem:
public MenuItem (),
public MenuItem (string text),
public MenuItem (string text, EventHandler onClick),
public MenuItem (string text, MenuItem[] items),
public MenuItem (string text, EventHandler onClick, Shortcut shortcut),
:
text ,
onClick EventHandler, .
onClick .
shortcut .
Shortcut - . 150 . , .
, . MessageBox , . ALT+1 ALT+2.
1:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Menu1
{
public partial class Form1: Form
{
//
MainMenu MnMen1; //
//
MenuItem pnkt1;
MenuItem pnkt1_1; //
MenuItem pnkt1_2; //
//
MenuItem pnkt2;
MenuItem pnkt2_1; //
MenuItem pnkt2_2; //
public Form1() //
{
InitializeComponent();
this.Text = "";//
// - pnkt1_1 = new MenuItem(" 1_1", new EventHandler(Msg1_1), Shortcut.Alt1);
pnkt1_2 = new MenuItem(" 1_2", new EventHandler(Msg1_2), Shortcut.Alt2);
pnkt1 = new MenuItem(" 1", new MenuItem[] { pnkt1_1, pnkt1_2 });
// -
pnkt2_1 = new MenuItem(" 2_1", new EventHandler(Msg2_1));
pnkt2_2 = new MenuItem(" 2_2", new EventHandler(Msg2_2));
pnkt2 = new MenuItem(" 2", new MenuItem[] { pnkt2_1, pnkt2_2 });
// -
MnMen1 = new MainMenu(new MenuItem[] { pnkt1, pnkt2 });
this.Menu = MnMen1;//
}
//
void Msg1_1(object sr, EventArgs e)
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{
MessageBox.Show(" 1_1");
}
void Msg1_2(object sr, EventArgs e)
{
MessageBox.Show(" 1_2");
}
void Msg2_1(object sr, EventArgs e)
{
MessageBox.Show(" 2_1");
}
void Msg2_2(object sr, EventArgs e)
{
MessageBox.Show(" 2_2");
}
}
}
.
, , , .
, :
MenuItem pnkt = new MenuItem(-);
.
MenuItem . , ..
:
1. Shortcut - ,
2. ShowShortcut - false , , , true -
3. Text -
4. Visible (true) - (false) .
5. Enabled false true. .
6. DefaultItem true , , , , . .
7. Checked true , .
Menu MenuItemCollection, MainMenu, ContextMenu MenuItem. MenuItemCollection , .
:
Menultem Add(string caption)
Menultem Add(string caption, EventHandler onClick)
Menultem Add(string caption, MenuItem [] items)
int Add(MenuItem item)
int Add(int index, MenuItem item)
void AddRange(MenuItem[] items)
Count MenuItemCollection.
Add .
.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace CntMn
{
public partial class Form1: Form
{
MenuItem myClr; //
ContextMenu ctmn;//
public Form1()
{
InitializeComponent();
ctmn = new ContextMenu();//
//
EventHandler ev = new EventHandler(MnClick);
//
ctmn.MenuItems.Add("Red", ev);
ctmn.MenuItems.Add("Blue", ev);
ctmn.MenuItems.Add("Green", ev);
foreach (MenuItem itm in ctmn.MenuItems)
itm.RadioCheck = true;
//
myClr = ctmn.MenuItems[2];
myClr.Checked = true;
//
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this.BackColor = Color.FromName(myClr.Text);
//
this.ContextMenu = ctmn;
}
//
void MnClick(object sr, EventArgs e)
{
myClr.Checked = false;//
myClr = (MenuItem)sr; //
myClr.Checked = true;//
this.BackColor = Color.FromName(myClr.Text);
}
}
}
Visual Studio.Net.
, ( ) . .
1. ToolBox MainMenu ContextMenu.
2. . mainMenu1 .
3. contextMenu1 .
4. , :
private int width;
private int height;
private Color myColor;
5. Form1():
public Form1()
{
InitializeComponent();
myColor = Color.Red;
width = 10;
height = 10;
}
6. , - Paint , :
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics dc = e.Graphics;
Pen myPen = new Pen(myColor);
dc.DrawRectangle(myPen,50,50,width,height);
}
7. mainMenu1 - . , :
private void menuItem2_Click(object sender, System.EventArgs e)
{
width = 100;
height = 100;
Invalidate();
}
8. :
private void menuItem3_Click(object sender, System.EventArgs e)
{
width = 10;
height = 10;
Invalidate();
}
9. contextMenu1 :
private void menuItem4_Click(object sender, System.EventArgs e)
{
myColor = Color.Red;
Invalidate();
}
10. contextMenu1 :
private void menuItem5_Click(object sender, System.EventArgs e)
{
myColor = Color.Blue;
Invalidate();
}
11. - , :
private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
Point myPoint = new Point(e.X,e.Y);
if(e.Button.ToString() == "Right")
contextMenu1.Show(this,myPoint);
}
12. .
:
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9. ?
10. ?
11. ?
:
1. 1. 1 . , , .
2. 2. . . .
3. 3. . . .
4. 3. . , , ( ) . .
5. , , , .
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6. 3. . , , .
7. 3. , , .
8. , , , .
9. , (, , ), .
10. , , , , .
8
Thread.
:
public Thread (ThreadStart start)
start ThreadStart , .
ThreadStart System.Threading delegate :
public delegate void ThreadStart();
, , void .
, , - void funcThread(), start:
ThreadStart start = new ThreadStart(funcThread);
ThreadStart , .
start funcThread.
, Thread start :
Thread thrd = new Thread(start);
Start, thrd:
thrd.Start();
Name :
thrd.Name = ThrName;,
:
strig nm = thrd.Name;
, , , . . . , IsAlive, . true, (false), . . :
public static void Sleep(int time)
Thread, time .
, .
1:
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace ConsoleApplication4
{
class MyThread
{
private int count; //
//
public Thread thrd;
public MyThread(string name)
{
count = 0;
// FnThr
thrd = new Thread(new ThreadStart(this.FnThr));
thrd.Name = name; // .
thrd.Start(); // .
}
//
public void FnThr()
{
Console.WriteLine(thrd.Name + " .");
do
{
Thread.Sleep(300); // 0,3
Console.WriteLine(" " + thrd.Name + ", count - " + count);
count++;
} while (count <= 4);
Console.WriteLine(thrd.Name + " .");
}
}
class Program
{
static void Main(string[] args)
{
Console.WriteLine(" .");
//
MyThread[] mt = new MyThread[5];
// MyThread.
for (int j = 0; j < mt.Length; j++)
mt[j] = new MyThread(" #" + j.ToString());
bool live;
do
{
live=false;
Console.Write(".");
Thread.Sleep(100); //
for (int j = 0; j < mt.Length; j++)
{
live = live | mt[j].thrd.IsAlive;
}
} while (live);
Console.WriteLine(" .");
}
}
}
MyThread. MyThread :
thrd = new Thread(new ThreadStart(this.FnThr));
, Start() , FnThr().
FnThr () , "" 0 4. , . Sleep(), FnThr () , , , . Main() Thread:
//
MyThread[] mt = new MyThread[5];
// MyThread.
for (int j = 0; j < mt.Length; j++)
mt[j] = new MyThread(" #" + j.ToString());
MyThread, , , , Main() .
:
for (int j = 0; j < mt.Length; j++)
{
live = live | mt[j].thrd.IsAlive;
}
} while (live);
Main() .
