Add project files.

networkPaint/MainForm.cs

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+using System;
+using System.Collections.Specialized;
+using System.Drawing;
+using System.Net;
+using System.Windows.Forms;
+
+namespace networkPaint
+{
+    public partial class MainForm : Form
+    {
+        Color color;
+        Random r = new Random();
+        WebClient client = new WebClient();
+        Bitmap bitmap;
+        Graphics graphics;
+        string url = "http://kawaiizenbo.me/toys/networkpaint/";
+        public MainForm()
+        {
+            InitializeComponent();
+            color = intToRGB(r.Next(0, 0xFFFFFF));
+            bitmap = new Bitmap(640, 480);
+            paintArea.Image = bitmap;
+            graphics = Graphics.FromImage(bitmap);
+        }
+
+        private void paintArea_Click(object sender, EventArgs e)
+        {
+            MouseEventArgs em = (MouseEventArgs)e;
+            NameValueCollection values = new NameValueCollection();
+            values["color"] = rgbToInt(color).ToString();
+            values["x"] = em.X.ToString();
+            values["y"] = em.Y.ToString();
+            values["size"] = brushSizeNumericUpDown.Value.ToString();
+            client.UploadValues(url + "post.php", values);
+        }
+
+        private void MainForm_Load(object sender, EventArgs e)
+        {
+            timer.Start();
+        }
+
+        private void timer_Tick(object sender, EventArgs e)
+        {
+            string responseString = client.DownloadString(url + "data.ppf");
+            client.Dispose();
+            if (responseString.Trim() == "") return;
+            foreach (string packet in responseString.Split(';'))
+            {
+                try
+                {
+                    if (packet.Trim() == "") continue;
+                    int color = int.Parse(packet.Split(',')[0]);
+                    int x = int.Parse(packet.Split(',')[1]);
+                    int y = int.Parse(packet.Split(',')[2]);
+                    int size = int.Parse(packet.Split(',')[3]);
+                    graphics.FillEllipse(new SolidBrush(intToRGB(color)), new Rectangle(x - size / 2, y - size / 2, size, size));
+                }
+                catch (Exception)
+                {
+                    continue;
+                }
+            }
+            paintArea.Image = bitmap;
+        }
+
+        public static int rgbToInt(Color color)
+        {
+            return ((255 & 0x0ff) << 24) | ((color.R & 0x0ff) << 16) | ((color.G & 0x0ff) << 8) | (color.B & 0x0ff);
+        }
+
+        public static Color intToRGB(int color)
+        {
+            return Color.FromArgb(0xFF, (color & 0x00FF0000) >> 16, (color & 0x0000FF00) >> 8, color & 0x000000FF);
+        }
+
+        private void changeColorButton_Click(object sender, EventArgs e)
+        {
+            colorDialog.ShowDialog();
+            color = colorDialog.Color;
+        }
+
+        private void setUrlButton_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                if (client.DownloadString(urlTextBox.Text + "/valid.txt").Trim() != "networkPaint") throw new Exception();
+            }
+            catch (Exception)
+            {
+                MessageBox.Show("This is not a valid networkPaint endpoint.");
+                urlTextBox.Text = url;
+                return;
+            }
+            string tempURL = urlTextBox.Text;
+            if (!tempURL.EndsWith("")) tempURL += "/";
+            url = tempURL;
+        }
+    }
+}