Skin Form -slide (push / pull) eq / playlist panel.

Question

Hi,
sorry i don't understand english well.
Everything is written with the help of google translator. I'm a hobbyist. I will try to create a player with a slide (push / pull) eq / playlist panel.
This effect is present, for example, in windows media player or aimp player. Nowhere can I find an example of how to achieve this effect.
I want to ask how to create it in c # / vb.net.
I hope you understand the question. thank you for answer.
Sincerely Jan

Answer 1

@Jan Dvorak , you can try to use three panels two buttons and two timers to make a expandable.

Here is a code example you could refer to.(The right panel)

public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            InitializeComponent();  
            centerpanel.Parent = this;  
            leftpanel.Parent = this;  
            rightpanel.Parent = this;  
            this.StartPosition = FormStartPosition.Manual;  
            this.Location = new Point(700, 400);  
        }  
  
        bool isRight = false;  
        bool isLeft = false;  
  
        private System.Timers.Timer myTimer;  
  
  
        private void button1_Click(object sender, EventArgs e)  
        {  
            isRight = !isRight;  
            rightpanel.Visible = true;  
            centerpanel.BringToFront();  
            this.myTimer = new System.Timers.Timer(10);  
            this.myTimer.Elapsed += new System.Timers.ElapsedEventHandler(right_Elapsed);  
            this.myTimer.AutoReset = true;  
            this.myTimer.Enabled = true;  
            this.myTimer.Start();  
        }  
  
        private void right_Elapsed(object sender, ElapsedEventArgs e)  
        {  
            if (isRight)  
            {  
                if (this.Width + 15 > rightpanel.Width * 2)  
                {  
                    this.myTimer.Enabled = false;  
                    this.myTimer.Stop();  
                }  
  
                if (this.InvokeRequired)  
                {  
                    this.Invoke(new MethodInvoker(delegate { Width += 10; }));  
                    rightpanel.Invoke(new MethodInvoker(delegate { rightpanel.Left += 10; }));  
                }  
            }  
            else  
            {  
                if (this.Width - 10 < rightpanel.Width)  
                {  
                    this.myTimer.Enabled = false;  
                    this.myTimer.Stop();  
                    rightpanel.Invoke(new MethodInvoker(delegate { rightpanel.Visible = false; }));  
                }  
  
                if (this.InvokeRequired)  
                {  
                    this.Invoke(new MethodInvoker(delegate { Width -= 10; }));  
                    rightpanel.Invoke(new MethodInvoker(delegate { rightpanel.Left -= 10; }));  
                }  
            }  
        }  
        
        private void Form1_Load(object sender, EventArgs e)  
        {  
            rightpanel.Visible = false;  
            leftpanel.Visible = false;  
            button1.Parent = centerpanel;  
            button1.Location = new Point(257, 0);  
  
            button2.Parent = centerpanel;  
            button2.Location = new Point(0, 0);  
            
            this.FormBorderStyle = FormBorderStyle.None;  
        }  
  
        
    }  

Result:

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