Link to home
Start Free TrialLog in
Avatar of schenkp
schenkp

asked on

Confused Need Help With Code

HI,
I am using the following code to have a form fade out to zero percent opacity, then fade right back into 100 Opacity when a button is pushed.  

I cant seem to shut it off after it fades back to 100 opactiy?

Also I need to change the form size to 200 by 200 using this code when the form is at 0 opacity

this.Size = new Size(200, 200);

But I am not sure where to put insert the code?


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

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
           
        }
       // private String imgName;
        private DateTime dt;
        private Timer t;
        private bool fadeOut = true;

        private void Form1_Load(object sender, EventArgs e)
        {
           
        }
     
        void t_Tick(object sender, EventArgs e)
        {
            TimeSpan ts = dt.Subtract(DateTime.Now);
            if (ts.TotalSeconds > 0)
            {
                if (fadeOut)
                {
                    if (this.Opacity > .0)
                    {
                        this.Opacity -= .01;
                    }
                    else
                    {
                        fadeOut = !fadeOut;
                    }
                }
                else
                {
                    if (this.Opacity < 1.0)
                    {
                        this.Opacity += .01;
                    }
                    else
                    {
                        fadeOut = !fadeOut;
                    }
                }
            }
            else
            {
                t.Stop();
                //this.Close(); // optional
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            dt = DateTime.Now.AddSeconds(100);
            t = new Timer();
            t.Tick += new EventHandler(t_Tick);
            t.Interval = 100;
            t.Start();
        }

    }
}
Avatar of lizard450
lizard450

I think this is what you want... ???  i'm failing to see why you need a timer... can you explain?


private bool falseIsDown = true;
        private void button1_Click(object sender, EventArgs e)
        {
            doFade();
        }

        private void doFade()
        {
            falseIsDown = !falseIsDown;
            double incrementAmount = .01;
            if(!falseIsDown)
            {
                incrementAmount = incrementAmount*-1;
            }
            double loopTimes = Math.Abs(1/incrementAmount);
            for (double a = loopTimes; a >= 0;a--)
                this.Opacity += incrementAmount;
            this.Size = new Size(200, 200);
        }

        void Form1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
        {
            doFade();
        }
of course don't forget to add   this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(Form1_KeyPress);
     to the initializecomponents thing
Avatar of schenkp

ASKER

It fades nice but how about having it come right back to 100% Opacity?
Avatar of schenkp

ASKER

I would like it to fade then come right back just by clicking the button?
Meh... just thought id clean the code up a bit...

private int falseIsDown = 1;
        private void doFade()
        {
            falseIsDown = falseIsDown*-1;
            double incrementAmount = .01*falseIsDown;
            double loopTimes = Math.Abs(1/incrementAmount);
            for (double a = loopTimes; a >= 0;a--)
                this.Opacity += incrementAmount;
            this.Size = new Size(200, 200);
        }

        void Form1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
        {
            doFade();
        }
Avatar of schenkp

ASKER

Can you have it come right back to 100 opacity?
ASKER CERTIFIED SOLUTION
Avatar of lizard450
lizard450

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of schenkp

ASKER

SWEET....

Thanks Bro
no prob