Re: Curciut problem - C# Discussion Boards

surfman193-Sep-05 4:30

3-Sep-05 4:30

hi,
i have a problem when i send a HttpRequest!
first i send a request to get the session_id than a login request and after that a other request....
after that i begin with the request for session_id and than the problem arise when i send the login request...
i get a timeout error when i call request.GetRequestStream (); by why!?!

cu

<br />
request for session id:<br />
-----------------------<br />
HttpWebRequest get_request = (HttpWebRequest)WebRequest.Create("https://www.myzone.at/webkeeper/Controller");<br />
get_request.CookieContainer = new CookieContainer();<br />
      <br />
HttpWebResponse get_response = (HttpWebResponse) get_request.GetResponse();<br />
get_response.Cookies = get_request.CookieContainer.GetCookies(get_request.RequestUri);<br />
<br />
String sessionid = "Cookie: ";<br />
sessionid += get_response.Cookies[0].ToString();<br />
<br />
login request:<br />
--------------<br />
HttpRequestResponse login_request = new HttpRequestResponse("https://www.myzone.at/webkeeper/Controller", "POST", "action=login&login=Anmelden&brand=myzone&username=xxxxxx&password=xxxxxxb&x=83&y=13");<br />
login_request.SESSION_ID = sessionid;<br />
login_request.SendRequest();<br />
<br />
<br />
<br />
sendrequest method:<br />
-----------------------------------------<br />
public string SendRequest()<br />
{<br />
    string responseFromServer="";<br />
<br />
    try<br />
    {<br />
        if((RequestMethod.ToUpper() != "GET") && (RequestMethod.ToUpper() != "POST"))<br />
            throw new WebException(RequestMethod+ " is not a valid method.  Use GET or POST.");<br />
<br />
        // Create a request using a URL that can receive a post. <br />
        HttpWebRequest request = (HttpWebRequest) WebRequest.Create(URL);<br />
        // Set the Method property of the request to POST.<br />
                request.Method = RequestMethod;<br />
        // Set the sessionid to the Header<br />
        request.Headers.Add(SessionId);<br />
<br />
        // check if asked to do a POST request, if so then modify <br />
        // the original request as it defaults to a GET method<br />
        if(RequestMethod.ToUpper()=="POST") <br />
        {<br />
            // Create POST data and convert it to a byte array.<br />
            byte[] byteArray = Encoding.UTF8.GetBytes (PostData);<br />
                    <br />
            // Set the ContentType property of the WebRequest.<br />
            request.ContentType = "application/x-www-form-urlencoded";<br />
                    <br />
            // Set the ContentLength property of the WebRequest.<br />
            request.ContentLength = byteArray.Length;<br />
                    <br />
            // Get the request stream.<br />
            Stream requestStream = request.GetRequestStream ();     <------------ here arise the timeout when i send the 2nd login request...<br />
                    <br />
            // Write the data to the request stream.<br />
            requestStream.Write (byteArray, 0, byteArray.Length);<br />
            // Close the Stream object.<br />
            requestStream.Close ();<br />
        }<br />
                <br />
        // Get the response.<br />
        HttpWebResponse response = (HttpWebResponse) request.GetResponse();<br />
        // Get the stream containing content returned by the server.<br />
        Stream dataStream = response.GetResponseStream ();<br />
        // Open the stream using a StreamReader for easy access.<br />
        StreamReader reader = new StreamReader (dataStream);<br />
        // Read the content.<br />
        responseFromServer = "HTTP/" + response.ProtocolVersion + " " + response.StatusDescription + " ";<br />
        responseFromServer += response.Headers.ToString();<br />
<br />
        // Clean up the streams.<br />
        reader.Close ();<br />
        dataStream.Close ();<br />
        response.Close ();<br />
    }<br />
<br />
    catch (WebException e)<br />
    {<br />
        throw CatchHttpExceptions(responseFromServer = e.Message);<br />
    }<br />
    catch (Exception e)<br />
    {<br />
        throw new Exception(responseFromServer = e.Message);<br />
    }<br />
<br />
    return responseFromServer;<br />
}<br />

Re: HttpWebRequest Timeout Problem

Andy Brummer3-Sep-05 14:21

Andy Brummer

3-Sep-05 14:21

I think the problem is that you don't close your original response. It's been a while since I used these objects, but I seem to remember getting that problem if I didn't properly clean up after every request.

I can imagine the sinking feeling one would have after ordering my book,
only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

Re: HttpWebRequest Timeout Problem

surfman193-Sep-05 14:36

surfman19

3-Sep-05 14:36

hi,
and whats that, here i close it! hmmmmm....

<br />
// Clean up the streams.<br />
reader.Close ();<br />
dataStream.Close ();<br />
response.Close ();       <--------------<br />

Re: HttpWebRequest Timeout Problem

Andy Brummer3-Sep-05 17:03

Andy Brummer

3-Sep-05 17:03

It might not be the problem, but in your sample code I didn't see where the original request and response were closed:

HttpWebRequest get_request = (HttpWebRequest)WebRequest.Create("https://www.myzone.at/webkeeper/Controller");
get_request.CookieContainer = new CookieContainer();

HttpWebResponse get_response = (HttpWebResponse) get_request.GetResponse();
get_response.Cookies = get_request.CookieContainer.GetCookies(get_request.RequestUri);

String sessionid = "Cookie: ";
sessionid += get_response.Cookies[0].ToString();

//Close get_response and get_request here.

login request:
--------------
HttpRequestResponse login_request = new HttpRequestResponse("https://www.myzone.at/webkeeper/Controller", "POST", "action=login&login=Anmelden&brand=myzone&username=xxxxxx&password=xxxxxxb&x=83&y=13");
login_request.SESSION_ID = sessionid;
login_request.SendRequest();

Also, I assume you have tried changing the request timeout value of the request object and setting it to a high enough value.

I can imagine the sinking feeling one would have after ordering my book,
only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

Re: HttpWebRequest Timeout Problem

surfman194-Sep-05 1:23

surfman19

4-Sep-05 1:23

hi, yeahhhhh i found the error Wink | ;-)

))
i forgot to close the get_response: get_response.Close();
now all works perfect Wink | ;-)

)
cu

Curciut problem

Niklas Ulvinge3-Sep-05 3:30

Niklas Ulvinge

3-Sep-05 3:30

I got a hard problem I don't know how to solve...
How do I, with the classes in item.cs, make elecrisity go from a battery throu two cords and back to the battery again. I'll implement the ohm's later...
How do the cord know when it should flow elecrisity. Confused | :confused:

item.cs:

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Text;

namespace NiklasUlvinge.ChipsEater
{
    abstract class Item
    {
        //var's
        public Item[][] input;
        public int x;
        public int y;

        public abstract Strom Output
        {
            get;
        }
        public abstract Point[] Snap
        {
            get;
        }

        protected Item(int X, int Y)
        {
            x = X;
            y = Y;
            input = new Item[1][];
        }

        //abstract funcs
        public abstract void function();
        public abstract void draw(Graphics g);
        //funcs
        public void addBothInput(int index, int fromIndex, Item Input)
        {
            Input.addInput(fromIndex, this);

            this.addInput(index, Input);
        }
        private void addInput(int index, Item Input)
        {
            index = input.Length & index;

            Item[] inp = input[index];

            Item[] titem;

            if (inp == null)
            {
                titem = new Item[1];
            }
            else
                titem = new Item[inp.Length];

            for (int i = 0; i < titem.Length - 1; i++)
            {
                titem[i] = inp[i];
            }
            titem[titem.Length - 1] = Input;
            input[index] = titem;
        }
        public Strom combinedInput(int index)
        {
            Strom r = 0;
            if (input[index] == null)
                return 0;
            else
            {
                for (int i = 0; i < input[index].Length; i++)
                {
                    r += input[index][i].Output[j];
                }
                return r;
            }
        }

        //const
        protected Brush surf = Brushes.LightGray;
        protected Pen side = Pens.DarkGray;
        protected Pen loff = Pens.Black;
        protected Pen lon = Pens.Red;
    }

    class Null : Item
    {
        public override Strom Output
        {
            get
            {
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[0];
            }
        }

        public Null(int X, int Y)
            : base(X, Y)
        {
        }

        public override void function()
        {
            throw new Exception("The method or operation is not implemented.");
        }
        public override void draw(Graphics g)
        {
            throw new Exception("The method or operation is not implemented.");
        }
    }

    class Transistor : Item
    {
        protected float[] output;
        public Null theNull = new Null(-50, -50);


        public override Strom Output
        {
            get
            {
                Strom r;
                if (strom.l - strom.r > 0)
                {
                    r.l = strom.l;
                    r.r = strom.r;
                }
                else
                {
                    r.l = strom.l;
                    r.r = strom.r;
                }
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[3] {
                    new Point(x - 16, y - 1),
                    new Point(x + 3, y - 16),
                    new Point(x + 3, y + 16)};
            }
        }

        public Transistor(int X, int Y) : base(X, Y)
        {
            input = new Item[4][];
            output = new float[1];
        }

        public override void function()
        {
            if (combinedInput(0) > 0)
                output[0] = combinedInput(1);
            else
                output[0] = 0;
        }
        public override void draw(Graphics g)
        {
            IntPtr intp;
            //get the right image...
            if (combinedInput(0) == 0)
                if (combinedInput(1) == 0)
                    if (output[0] == 0)
                        intp = Properties.Resources.trans000.GetHbitmap();
                    else
                        intp = Properties.Resources.trans001.GetHbitmap();
                else
                    if (output[0] == 0)
                        intp = Properties.Resources.trans010.GetHbitmap();
                    else
                        intp = Properties.Resources.trans011.GetHbitmap();
            else
                if (combinedInput(1) == 0)
                    if (output[0] == 0)
                        intp = Properties.Resources.trans100.GetHbitmap();
                    else
                        intp = Properties.Resources.trans101.GetHbitmap();
                else
                    if (output[0] == 0)
                        intp = Properties.Resources.trans110.GetHbitmap();
                    else
                        intp = Properties.Resources.trans111.GetHbitmap();

            g.DrawImage(Image.FromHbitmap(intp), x - Image.FromHbitmap(intp).Size.Width / 2, y - Image.FromHbitmap(intp).Size.Height / 2);
        }
    }

    class Cord : Item
    {
        public int x2, y2;
        public Null theNull = new Null(-50, -50);

        public override Strom Output
        {
            get
            {
                Strom o,
                    l = combinedInput(0),
                    r = combinedInput(1);

                //what to do?
                
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[2] {
                    new Point(x, y),
                    new Point(x2, y2) };
            }
        }
        
        public Cord(int X1, int Y1)
            : base(X1, Y1)
        {
            input = new Item[2][];
        }

        public override void function()
        {
        }
        public override void draw(Graphics g)
        {
            g.DrawLine(combinedInput(0) > 0 ? lon : loff,
                x, y, x2, y2);
        }
    }

    class Battery : Item
    {
        public Null theNull = new Null(-50, -50);

        public override float[] Output
        {
            get
            {
                return new float[1] { 1 };
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[2] {
                    new Point(x - 5, y),
                    new Point(x + 5, y) };
            }
        }

        public Battery(int X, int Y)
            : base(X, Y)
        {
        }

        public override void function()
        {
        }
        public override void draw(Graphics g)
        {
            g.DrawLine(lon, x - 2, y - 10, x - 2, y + 10);
            g.DrawLine(lon, x + 2, y - 6, x + 2, y + 6);
            g.DrawLine(lon, x - 2, y, x - 5, y);
            g.DrawLine(lon, x + 2, y, x + 5, y);
        }
    }
}

form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace NiklasUlvinge.ChipsEater
{
    public partial class Form1 : Form
    {
        Item[] items = new Item[0];
        bool mouseIsDown = false;
        Point startingPoint;
        Cord newCord;

        public Form1()
        {
            InitializeComponent();
        }

        private void PB_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;

            g.Clear(Color.White);

            for (int i = 0; i < items.Length; i++)
            {
                items[i].draw(g);
            }

        }


        private void addItem(Item item)
        {
            Item[] titem = new Item[items.Length + 1];

            for (int i = 0; i < items.Length; i++)
            {
                titem[i] = items[i];
            }
            titem[items.Length] = item;
            items = titem;
        }

        private void PB_MouseClick(object sender, MouseEventArgs e)
        {
            switch (treeItems.SelectedNode.Name)
            {
            case "NodeLst1":
                addItem(new Transistor(e.X,e.Y));
                break;
            case "NodeLst2":
                addItem(new Battery(e.X, e.Y));
                break;
            }

            this.Refresh();
        }

        private void PB_MouseDown(object sender, MouseEventArgs e)
        {
            switch (treeItems.SelectedNode.Name)
            {
            case "NodeLst0":
                startingPoint = new Point(-2,-2);
                //if the point should snapp
                for (int i = 0; i < items.Length; i++)
                {
                    Point[] pts = items[i].Snap;
                    for (int j = 0; j < pts.Length; j++)
                    {
                        if ((Math.Abs(pts[j].X - e.X) < 5) && (Math.Abs(pts[j].Y - e.Y) < 5))
                        {
                            startingPoint = new Point(pts[j].X, pts[j].Y);
                            newCord = new Cord(startingPoint.X, startingPoint.Y);
                            
                            items[i].addBothInput(0,0,newCord);
                        }
                    }
                }
                if (startingPoint == new Point(-2, -2))
                {
                    startingPoint = new Point(e.X, e.Y);
                    newCord = new Cord(startingPoint.X, startingPoint.Y);
                }
                mouseIsDown = true;
                break;
            }
        }
        private void PB_MouseUp(object sender, MouseEventArgs e)
        {
            switch (treeItems.SelectedNode.Name)
            {
            case "NodeLst0":
                mouseIsDown = false;
                int theX = e.X,
                    theY = e.Y;

                for (int i = 0; i < items.Length; i++)
                {
                    Point[] pts = items[i].Snap;
                    for (int j = 0; j < pts.Length; j++)
                    {
                        if ((Math.Abs(pts[j].X - e.X) < 5) && (Math.Abs(pts[j].Y - e.Y) < 5))
                        {
                            theX = pts[j].X;
                            theY = pts[j].Y;
                            items[i].addBothInput(j,0, newCord);
                        }
                    }
                }

                
                //if it snapped to input
                    newCord.x2 = theX;
                    newCord.y2 = theY;

                addItem(newCord);
                newCord = null;
                break;
            }
            this.Refresh();
        }
        private void PB_MouseMove(object sender, MouseEventArgs e)
        {
            if (mouseIsDown)
            {
                Graphics g = PB.CreateGraphics();
                this.Refresh();
                g.DrawLine(Pens.Black, startingPoint, new Point(e.X, e.Y));
            }
        }

    }
}

Niklas Ulvinge aka IDK

Re: Curciut problem

rudy.net3-Sep-05 5:21

rudy.net

3-Sep-05 5:21

I could not compile your code because type "Strom" is not defined. Can you also provide this as well?

Re: Curciut problem

Niklas Ulvinge3-Sep-05 5:33

Niklas Ulvinge

3-Sep-05 5:33

Form1.Designer.cs:

namespace NiklasUlvinge.ChipsEater
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            System.Windows.Forms.TreeNode treeNode1 = new System.Windows.Forms.TreeNode("Cord");
            System.Windows.Forms.TreeNode treeNode2 = new System.Windows.Forms.TreeNode("Transistor");
            System.Windows.Forms.TreeNode treeNode3 = new System.Windows.Forms.TreeNode("Battery");
            System.Windows.Forms.TreeNode treeNode4 = new System.Windows.Forms.TreeNode("lowest", new System.Windows.Forms.TreeNode[] {
            treeNode1,
            treeNode2,
            treeNode3});
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.toolStrip1 = new System.Windows.Forms.ToolStrip();
            this.splitContainer1 = new System.Windows.Forms.SplitContainer();
            this.treeItems = new System.Windows.Forms.TreeView();
            this.PB = new System.Windows.Forms.PictureBox();
            this.splitContainer1.Panel1.SuspendLayout();
            this.splitContainer1.Panel2.SuspendLayout();
            this.splitContainer1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.PB)).BeginInit();
            this.SuspendLayout();
            // 
            // menuStrip1
            // 
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(608, 24);
            this.menuStrip1.TabIndex = 0;
            this.menuStrip1.Text = "menuStrip1";
            // 
            // toolStrip1
            // 
            this.toolStrip1.Location = new System.Drawing.Point(0, 24);
            this.toolStrip1.Name = "toolStrip1";
            this.toolStrip1.Size = new System.Drawing.Size(608, 25);
            this.toolStrip1.TabIndex = 1;
            this.toolStrip1.Text = "toolStrip1";
            // 
            // splitContainer1
            // 
            this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.splitContainer1.Location = new System.Drawing.Point(0, 49);
            this.splitContainer1.Name = "splitContainer1";
            // 
            // splitContainer1.Panel1
            // 
            this.splitContainer1.Panel1.Controls.Add(this.treeItems);
            // 
            // splitContainer1.Panel2
            // 
            this.splitContainer1.Panel2.Controls.Add(this.PB);
            this.splitContainer1.Size = new System.Drawing.Size(608, 376);
            this.splitContainer1.SplitterDistance = 83;
            this.splitContainer1.TabIndex = 3;
            this.splitContainer1.Text = "splitContainer1";
            // 
            // treeItems
            // 
            this.treeItems.Dock = System.Windows.Forms.DockStyle.Fill;
            this.treeItems.Location = new System.Drawing.Point(0, 0);
            this.treeItems.Name = "treeItems";
            treeNode1.Name = "NodeLst0";
            treeNode1.Text = "Cord";
            treeNode1.ToolTipText = "A simple current wire";
            treeNode2.Name = "NodeLst1";
            treeNode2.Text = "Transistor";
            treeNode2.ToolTipText = "A transistor";
            treeNode3.Name = "NodeLst2";
            treeNode3.Text = "Battery";
            treeNode3.ToolTipText = "A simple battery";
            treeNode4.Name = "NodeLst";
            treeNode4.Text = "lowest";
            treeNode4.ToolTipText = "The lowest things of circuts";
            this.treeItems.Nodes.AddRange(new System.Windows.Forms.TreeNode[] {
            treeNode4});
            this.treeItems.ShowRootLines = false;
            this.treeItems.Size = new System.Drawing.Size(83, 376);
            this.treeItems.TabIndex = 0;
            // 
            // PB
            // 
            this.PB.Dock = System.Windows.Forms.DockStyle.Fill;
            this.PB.Location = new System.Drawing.Point(0, 0);
            this.PB.Name = "PB";
            this.PB.Size = new System.Drawing.Size(521, 376);
            this.PB.TabIndex = 1;
            this.PB.TabStop = false;
            this.PB.MouseMove += new System.Windows.Forms.MouseEventHandler(this.PB_MouseMove);
            this.PB.Paint += new System.Windows.Forms.PaintEventHandler(this.PB_Paint);
            this.PB.MouseClick += new System.Windows.Forms.MouseEventHandler(this.PB_MouseClick);
            this.PB.MouseUp += new System.Windows.Forms.MouseEventHandler(this.PB_MouseUp);
            this.PB.MouseDown += new System.Windows.Forms.MouseEventHandler(this.PB_MouseDown);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(608, 425);
            this.Controls.Add(this.splitContainer1);
            this.Controls.Add(this.toolStrip1);
            this.Controls.Add(this.menuStrip1);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "Form1";
            this.Text = "Form1";
            this.splitContainer1.Panel1.ResumeLayout(false);
            this.splitContainer1.Panel2.ResumeLayout(false);
            this.splitContainer1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.PB)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.MenuStrip menuStrip1;
        private System.Windows.Forms.ToolStrip toolStrip1;
        private System.Windows.Forms.SplitContainer splitContainer1;
        private System.Windows.Forms.PictureBox PB;
        private System.Windows.Forms.TreeView treeItems;
    }
}

Program.cs:

using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace NiklasUlvinge.ChipsEater
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.Run(new Form1());
        }
    }
}

strom.cs

namespace NiklasUlvinge.ChipsEater
{
    struct Strom
    {
        public float l, r;

        public Strom(float left, float right)
        {
            l=left;
            r = right;
        }

        public static Strom operator +(Strom a, Strom b)
        {
            return new Strom(a.l + b.l, a.r + b.r);
        }

        public static bool operator ==(Strom a, Strom b)
        {
            if (a.l == b.l && a.r == b.r)
                return true;
            else
                return false;
        }
        public static bool operator !=(Strom a, Strom b)
        {
            return !(a == b);
        }
    }
}

the new item.cs file:

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Text;

namespace NiklasUlvinge.ChipsEater
{
    abstract class Item
    {
        //var's
        public Item[][] input;
        public int x;
        public int y;

        public abstract Strom LeftOutput
        {
            get;
        }
        public abstract Strom RightOutput
        {
            get;
        }
        public abstract Point[] Snap
        {
            get;
        }

        protected Item(int X, int Y)
        {
            x = X;
            y = Y;
            input = new Item[1][];
        }

        //abstract funcs
        public abstract void function();
        public abstract void draw(Graphics g);
        //funcs
        public void addBothInput(int index, Item Input)
        {
            Input.addInput(1 - index, this);

            this.addInput(index, Input);
        }
        private void addInput(int index, Item Input)
        {
            index = input.Length & index;

            Item[] inp = input[index];

            Item[] titem;

            if (inp == null)
            {
                titem = new Item[1];
            }
            else
                titem = new Item[inp.Length];

            for (int i = 0; i < titem.Length - 1; i++)
            {
                titem[i] = inp[i];
            }
            titem[titem.Length - 1] = Input;
            input[index] = titem;
        }
        public Strom combinedInput(int index)
        {
            Strom r = new Strom(0, 0);
            if (input[index] == null)
                return new Strom(0, 0);
            else
            {
                for (int i = 0; i < input[index].Length; i++)
                {
                    if (index == 0)
                        r += input[index][i].LeftOutput;
                    else
                        r += input[index][i].RightOutput;
                }
                return r;
            }
        }

        //const
        protected Brush surf = Brushes.LightGray;
        protected Pen side = Pens.DarkGray;
        protected Pen loff = Pens.Black;
        protected Pen lon = Pens.Red;
    }

    class Null : Item
    {

        public override Strom LeftOutput
        {
            get
            {
                return new Strom(0, 0);
            }
        }
        public override Strom RightOutput
        {
            get
            {
                return new Strom(0, 0);
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[0];
            }
        }

        public Null(int X, int Y)
            : base(X, Y)
        {
        }

        public override void function()
        {
            throw new Exception("The method or operation is not implemented.");
        }
        public override void draw(Graphics g)
        {
            throw new Exception("The method or operation is not implemented.");
        }
    }

    class Transistor : Item
    {
        protected float[] output;
        public Null theNull = new Null(-50, -50);


        public override Strom LeftOutput
        {
            get
            {
                return new Strom(0, 0);
            }
        }
        public override Strom RightOutput
        {
            get
            {
                return new Strom(0, 0);
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[3] {
                    new Point(x - 16, y - 1),
                    new Point(x + 3, y - 16),
                    new Point(x + 3, y + 16)};
            }
        }

        public Transistor(int X, int Y) : base(X, Y)
        {
            input = new Item[4][];
            output = new float[1];
        }

        public override void function()
        {
        }
        public override void draw(Graphics g)
        {
            IntPtr intp;
            //get the right image...
            if (combinedInput(0) == new Strom(0, 0))
                if (combinedInput(1) == new Strom(0, 0))
                    if (output[0] == 0)
                        intp = Properties.Resources.trans000.GetHbitmap();
                    else
                        intp = Properties.Resources.trans001.GetHbitmap();
                else
                    if (output[0] == 0)
                        intp = Properties.Resources.trans010.GetHbitmap();
                    else
                        intp = Properties.Resources.trans011.GetHbitmap();
            else
                if (combinedInput(1) == new Strom(0, 0))
                    if (output[0] == 0)
                        intp = Properties.Resources.trans100.GetHbitmap();
                    else
                        intp = Properties.Resources.trans101.GetHbitmap();
                else
                    if (output[0] == 0)
                        intp = Properties.Resources.trans110.GetHbitmap();
                    else
                        intp = Properties.Resources.trans111.GetHbitmap();

            g.DrawImage(Image.FromHbitmap(intp), x - Image.FromHbitmap(intp).Size.Width / 2, y - Image.FromHbitmap(intp).Size.Height / 2);
        }
    }

    class Cord : Item
    {
        public int x2, y2;
        public Null theNull = new Null(-50, -50);

        public override Strom LeftOutput
        {
            get
            {
                return combinedInput(1);
            }
        }
        public override Strom RightOutput
        {
            get
            {
                return combinedInput(0);
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[2] {
                    new Point(x, y),
                    new Point(x2, y2) };
            }
        }
        
        public Cord(int X1, int Y1)
            : base(X1, Y1)
        {
            input = new Item[2][];
        }

        public override void function()
        {
        }
        public override void draw(Graphics g)
        {
            g.DrawLine(combinedInput(0) == new Strom(0,0) ? loff : lon,
                x, y, x2, y2);
        }
        public override string ToString()
        {
            return "L: l" + combinedInput(1).l + " r" + combinedInput(1).l + "R: l" + combinedInput(0).l + " r" + combinedInput(0).l;
        }
    }

    class Battery : Item
    {
        public Null theNull = new Null(-50, -50);


        public override Strom LeftOutput
        {
            get
            {
                return new Strom(100,-100);
            }
        }
        public override Strom RightOutput
        {
            get
            {
                return new Strom(-100, 100);
            }
        }
        public override Point[] Snap
        {
            get
            {
                return new Point[2] {
                    new Point(x - 5, y),
                    new Point(x + 5, y) };
            }
        }

        public Battery(int X, int Y)
            : base(X, Y)
        {
            input = new Item[2][];
        }

        public override void function()
        {
        }
        public override void draw(Graphics g)
        {
            g.DrawLine(lon, x - 2, y - 10, x - 2, y + 10);
            g.DrawLine(lon, x + 2, y - 6, x + 2, y + 6);
            g.DrawLine(lon, x - 2, y, x - 5, y);
            g.DrawLine(lon, x + 2, y, x + 5, y);
        }
        public override string ToString()
        {
            return "L: l" + combinedInput(1).l + " r" + combinedInput(1).l + "R: l" + combinedInput(0).l + " r" + combinedInput(0).l;
        }
    }
}

Niklas Ulvinge aka IDK

Now, how to extract low nibble and high nibble from a byte?

bouli3-Sep-05 3:15

bouli

3-Sep-05 3:15

Hello again gurus,

Now I can concatenate two nibbles into a byte, how can I do the reverse operation??
That is extracting the high nibble and low nibble from a byte?

Thanks for the help Smile | :)

Best regards.

There is no spoon.

Re: Now, how to extract low nibble and high nibble from a byte?

Colin Angus Mackay3-Sep-05 3:21

Colin Angus Mackay

3-Sep-05 3:21

byte nibble1 = 0x0F & byteValue;
byte nibble2 = (0xF0 & byteValue)/16;

My: Blog | Photos
WDevs.com - Open Source Code Hosting, Blogs, FTP, Mail and More

Re: Now, how to extract low nibble and high nibble from a byte?

Guffa3-Sep-05 6:09

Guffa

3-Sep-05 6:09

To get the high nibble, you shift the value four bits to the right.
To get the low nibble, you mask out the lower four bits.

hi = myByte >> 4;<br />
lo = myByte & 15;

---
b { font-weight: normal; }

Please Heeeeeeeeelp: Problem with Pinvoke???

E6AD3-Sep-05 2:46

E6AD

3-Sep-05 2:46

Dear All,

How can I marshall the following attributes in the following structure;

typedef struct IplImage
{.
.
struct _IplROI * roi;
void * imageid;

}

where _IplROI is itself a structure?

Another question is that the function unmanaged prototype is ;

IplImage * cvvLoadImage(const char * filename);

do I have to marshall the return type after defining the IplImage or I just write "IplImage *" after marshalling the structure??

Please Help,

Thanks and Best Regards,
E.A.

looping statement

Anonymous3-Sep-05 1:53

Anonymous

3-Sep-05 1:53

can anyone kmow how to program my problem about looping and factorial in c programming? please....ill w8 for your reply...

Re: looping statement

Guffa3-Sep-05 2:10

Guffa

3-Sep-05 2:10

What is the problem, then?

---
b { font-weight: normal; }

Re: looping statement

Libor Tinka3-Sep-05 2:42

Libor Tinka

3-Sep-05 2:42

Non-recursive version (not tested):
-----------------------------------

<br />
int Calc(int i) {<br />
<br />
  int fact = 1;<br />
  for (int j = i; j > 1; j--)<br />
    fact *= j;<br />
<br />
  return fact;<br />
}<br />

Recursive version (from MSDN):
------------------------------

<br />
int Calc(int i) { <br />
  return((i <= 1) ? 1 : (i * Calc(i-1))); <br />
}<br />

Re: looping statement

Colin Angus Mackay3-Sep-05 3:23

Colin Angus Mackay

3-Sep-05 3:23

Anonymous wrote:
anyone kmow how to program my problem

I don't know, you've not told us what your problem is exactly.

My: Blog | Photos
WDevs.com - Open Source Code Hosting, Blogs, FTP, Mail and More

My C++ MFC-app into a dll -> to be used in .NET app…

anderslundsgard3-Sep-05 1:25

anderslundsgard

3-Sep-05 1:25

I’ve mad an application (or apart of an app) in C++ that I’d like to use in .NET C# Windows Application.
The thing I like to accomplish is to build some kind of component of my existing C++ app and expose some functions that I later can call from the C# app.
The application I like to encapsulate can be seen ass a window (MFC CWnd in my case).
My fist question is if this is possible? If, then my second Q is How..?
I’ve made som COM and ActiveX programming but I don't (if it's possible) want to solve my problem that way.
I’m not expecting a total solution of my problem but Ideas where to start would be great.
Articles about this would be great. (Have not found any of them myself…)

_____________________________

...and justice for all

APe

How to concatenate 2 nibbles in 1 byte?

bouli3-Sep-05 1:22

bouli

3-Sep-05 1:22

Hello gurus,

As the subject of this topic says, I wish to know how to concatenate 2 nibbles to give 1 byte in C#?

Thanks for the help.

Best regards.

There is no spoon.

Re: How to concatenate 2 nibbles in 1 byte?

Guffa3-Sep-05 2:10

Guffa

3-Sep-05 2:10

Multiply the most significant nibble by 16 and add them together.

---
b { font-weight: normal; }

Re: How to concatenate 2 nibbles in 1 byte?

bouli3-Sep-05 2:11

bouli

3-Sep-05 2:11

hi guffa,

a code snippet maybe? thanks Smile | :)

There is no spoon.

Re: How to concatenate 2 nibbles in 1 byte?

leppie3-Sep-05 2:11

leppie

3-Sep-05 2:11

byte AddNibbles(byte a , byte b)
{
  return (a & 0xF) << 4 | (b & 0xF);
}

^{xacc-ide 0.0.15 now with C#, MSIL, C, XML, ASP.NET, Nemerle, MyXaml and HLSL coloring - Screenshots}

Re: How to concatenate 2 nibbles in 1 byte?

bouli3-Sep-05 2:12

bouli

3-Sep-05 2:12

ah, just what I needed Smile | :)

Thanks

There is no spoon.

Re: How to concatenate 2 nibbles in 1 byte?

Anonymous3-Sep-05 2:13

Anonymous

3-Sep-05 2:13

Use the following code :

byte nib1,nib2,finalByte;

finalByte = (nib1 << 4) | (nib2 & 0x0f);

-Atul, Sky Software http://www.ssware.com
Shell MegaPack For ActiveX & .Net - Windows Explorer Like Shell UI Controls

Re: How to concatenate 2 nibbles in 1 byte?

bouli3-Sep-05 2:16

bouli

3-Sep-05 2:16

Thanks!

There is no spoon.

Need help! - accessing disposed object

Libor Tinka3-Sep-05 0:35

Libor Tinka

3-Sep-05 0:35

When I dispose Control calling Control.Dispose() method, deactivate window and then re-activate window, I get ObjectDisposedException.

Does anybody know how to avoid Windows.Forms creating handle of a disposed control?

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