Okay, so I haven't done any programming in years, and yesterday I decided to learn some stuff about C#. I tried to write a program to, just for starters, get a little circle to move around the screen.(Please keep in mind that I haven't taken any classes, I haven't read any books, so this code is probably super hideous. Don't judge me.)

The Planet object is drawing every cycle, but it the actual circle is moving on screen. It's x and y positions are updating properly, and I have the actual numbers being drawn to the screen. In debugging I have checked, and the actual rectangle used to draw the circle is being updated along with the Planet object's changes. Still, the circle that I see on screen remains stationary. Any suggestions? Here's part of the code:

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

namespace tehgraphhhixzss
{
    public partial class planets : Form
    {
        private System.Windows.Forms.Timer timer1;

        public planets()
        {
            InitializeComponent();

            this.SetStyle(
                ControlStyles.UserPaint |
                ControlStyles.AllPaintingInWmPaint |
                ControlStyles.DoubleBuffer, true);
        }

        public class Planet
        {
            double mass, radius, x, y, dx, dy = 0;

            public Planet(double m, double r, double xpos, double ypos, double deltax, double deltay)
            {
                mass = m;
                radius = r;
                x = xpos;
                y = ypos;
                dx = deltax;
                dy = deltay;
            }

            public void Draw(System.Drawing.Graphics graphicsContext)
            {
                System.Drawing.Rectangle planetRect =
                    new System.Drawing.Rectangle(
                        (int)(x - radius), (int)(y - radius), (int)(radius), (int)(radius));
                graphicsContext.DrawEllipse(System.Drawing.Pens.Blue, planetRect);
            }

            public void Update()
            {
                x += dx;
                y += dy;
            }

            public double getX()
            {
                return x;
            }
            public double getY()
            {
                return y;
            }
        }


        int timesDrawn = 0;

        Planet testPlanet = new Planet(10, 10, 100, 100, .5, .5);
 
        protected override void OnPaint(PaintEventArgs e)
        {
            testPlanet.Draw(e.Graphics);
            timesDrawn++;
        }


        private void timer1_Tick(object sender, System.EventArgs e)
        {
            testPlanet.Update();
            label1.Text = "x: " + testPlanet.getX() + " y: " + testPlanet.getY();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {
            label1.Text = label1.Text + "!";
        }
    }
}

4/14/2008 12:26:22 PM

I can post the rest of the project if needed.

4/14/2008 12:28:15 PM

Okay, just realized that if I go to another window (LIEK TEHWOLFWEBS) and go back it redraws and does so in the correct position. I guess OnPaint() isn't getting called normally. teh hax.

4/14/2008 12:37:25 PM

okay, I figured it out.

MISSION ACCOMPLISHED. THREAD.INVALIDATE();

4/14/2008 12:41:38 PM

Feel free to tell me what's stupid about the rest of the code, though.

4/14/2008 12:49:45 PM

didn't want ya to feel lonely

[Edited on April 14, 2008 at 12:56 PM. Reason : ]

4/14/2008 12:56:32 PM

lol @ namespace tehgraphhhixzss

hahaha

4/14/2008 4:32:40 PM

grab the xna kit and have some 3d fun with c# kiddo

4/14/2008 4:33:41 PM

Also:

       Planet[] planetArray = new Planet[5];

        planetArray[0] = new Planet(10, 21, 100, 100, 5, 5, System.Drawing.Brushes.AliceBlue);

4/15/2008 2:00:52 PM

looks like you have too many parameters for planet

4/15/2008 2:50:38 PM

Sorry, the constructor is now this:

public Planet(double m, double r, double xpos, double ypos, double deltax, double deltay, System.Drawing.Brush pColor)
{
                mass = m;
                radius = r;
                x = xpos;
                y = ypos;
                dx = deltax;
                dy = deltay;
                planetColor = pColor;
}

        Planet testPlanet = new Planet(10, 21, 100, 100, 5, 5, System.Drawing.Brushes.AliceBlue);

        Planet planet2 = new Planet(20, 50, 300, 300, 2, 3, System.Drawing.Brushes.BlanchedAlmond);

4/15/2008 3:11:12 PM

Anybody??

4/15/2008 9:26:38 PM

srsly, can anybody help me?

4/16/2008 9:18:10 AM

say Planet[0] = testPlanet;

what errors do you get?

[Edited on April 16, 2008 at 8:05 PM. Reason : ]

4/16/2008 8:00:57 PM

^ already figured it out in message_topic.aspx?topic=522795

4/16/2008 9:47:13 PM

oh...nice. thanks for the update.

4/17/2008 8:11:24 PM

Thanks a lot to everybody who helped.

4/17/2008 9:15:52 PM

GTIV ain't got shit on me, son.

5/9/2008 6:26:44 PM

if red x is your goal...

5/9/2008 7:33:25 PM

Let's try this with a little less fail this time:

BOW BEFORE MY PROWESS.

5/10/2008 9:53:25 PM

In case anybody wants to see the type of leet shit I'm getting into these days:
http://www.mediafire.com/?4mlrzmcnytn
HD SUPER MARIO BROS WITH A RABBIT AND BEES AND SHIT WHAT WHAT

7/6/2008 11:59:32 AM

pedobear adventures?

7/6/2008 12:18:16 PM

Basically.

7/6/2008 12:32:41 PM