如何创建由三个单独的按钮组成的自定义图像按钮并添加事件处理程序

Question

I want to make a Custom Image Button which should be consist of three buttons with attached click event .
I tried to make a Customize button but I couldn't able attached a separate event handler .
for each button:

 class MulitButtons : UserControl
    {
        public Color bckColor1 = Color.Blue;       

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e); 

            Graphics graphics = e.Graphics; 
            RectangleF recF1 = new RectangleF(0, 0, 100, 40);
            RectangleF recF2 = new RectangleF(100, 0, 100, 40);
            RectangleF recF3 = new RectangleF(200, 0, 100, 40);   
            RectangleF[] arrRecF = { recF1, recF2, recF3 };  

            Pen pen = new Pen(Color.Black, 2);
            int fontHeight = 10;
            Font font = new Font("Arial", fontHeight);
            SolidBrush brush = new SolidBrush(bckColor1);    
            SolidBrush textBrush = new SolidBrush(Color.Black);  

            graphics.DrawRectangles(pen, arrRecF);
            graphics.DrawString(Text, font, textBrush, 10, 10);     
        }

    }

Adding event handler:

 MulitButtons objMltBtn = new MulitButtons();
 EventHandler handler= new EventHandler(but1_Click);
 objMltBtn.Click += handler;

Please help me out. Thanks.

Answer 1

If I understand well, you want to publish the Click events of your inner buttons.

Solution 1

This simply publishes the inner click event.

public event EventHandler Button1Click
{
    add { button1.Click += value; }
    remove { button1.Click -= value; }
}

Solution 2

If you want some control over the invoking, do it like this:

public MultiButtons()
{
    InitializeComponents();
    button1.Click += ButtonClick;
    button2.Click += ButtonClick;
    button3.Click += ButtonClick;
}

// this handles all of your clicks
private void ButtonClick(object sender, EventArgs e)
{
    if (sender == button1)
        OnButton1Click(EventArgs.Empty);
    // TODO: the other buttons...
}

public event EventHandler Button1Click;

protected virtual void OnButton1Click(EventArgs e)
{
    var handler = Button1Click;        
    if (handler != null)
        handler(this, e);
    else
        // you can call some default action if there is no event subscription
        DefaultButton1Click();
}

Update: I have just seen your comment:

I need a custom Image button with Three sections and on each section click i want to invoke an event which will perform some operation.

Just create three separate buttons next to each other and draw them in the Paint as if they were a single button. Then you can use one of the solutions above.