Click here to Skip to main content
Click here to Skip to main content
Go to top

Simple Arrow Animation

, 20 Jun 2006
Rate this:
Please Sign up or sign in to vote.
This article and code explains how we can implement simple animations with out much technical skills.

Sample Image

Introduction

This simple program explains how simple animations are implemented, using for loops etc.

Background

Actually, this program was made for my Instant Messaging Client - Gaim. I needed to know when my boss come online and when he went offline. Gaim has a feature called "Buddy Pounce" which allows users to trigger events. As per my logic, when a user logs in, my application will give me a signal by flying an arrow from right-bottom to left-top. And when he goes offline, the arrow moves from left-top to right-bottom.

Using the code

The images are stored as resources, and I call them depending on the value of Status:

this.BackgroundImage = Resource1.arrow2;

I have used this code to check whether the user is logged in or logged off. This accepts command line arguments. When Status is true, it means "LogIn", otherwise it means "LogOff".

if (args.Length > 0)
{
    if (args[0].ToString() == "logoff") 
    {
        Status = false;
    }
}

The animation logic is placed inside a Timer_Tick method. Inside the method, the screen width and height are validated, so this program will work under all screen resolutions. An Application.DoEvents(); call is placed in between, to avoid system concentrating on this app only.

private void timer1_Tick(object sender, EventArgs e)
{
    Application.DoEvents();
    
    if (Program.Status)
    {
        if (this.Top <= 0 || this.Left <= 0)
        {
            timer1.Enabled = false;
            Application.Exit();

        }
        this.Left -= 25;
        this.Top -= 15;
    }
    else
    {
        if (this.Top > Screen.GetBounds(this).Height || 
            this.Left > Screen.GetBounds(this).Width)
        {
            timer1.Enabled = false;
            Application.Exit();

        }
        this.Left += 25;
        this.Top += 15;
    }
}

History

This is my second version of this program but, this is my first version of this article.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Praveen Nair (NinethSense)
Architect ORION INDIA SYSTEMS
India India
Praveen.V.Nair - aka NinethSense - PMP, Microsoft MVP - is working as a Head of Technology and Architecture at Orion India Systems, Kochi, India. He has been playing with electronics from the age of 10 and with computers from the age of 14. He usually blogs at http://blog.ninethsense.com/.
Follow on   Twitter   Google+   LinkedIn

Comments and Discussions

 
GeneralMy vote of 5 Pinmembermanoj kumar choubey26-Feb-12 21:18 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web04 | 2.8.140916.1 | Last Updated 20 Jun 2006
Article Copyright 2006 by Praveen Nair (NinethSense)
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid