Question

I am having another issue writing my chip8 Emu. I have managed to get all instructions working aside from those that require input or those that involve graphics.

I am trying to write a seperate class to simply determine whether a button is being pressed or not. I have been working on this for some time and I think that I must be missing something very simple or I do not understand something conceptually. Here is the class I am writing with the exact errors in the comments

using System;
 using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace WindowsFormsApplication1
{
    class userIn
{
    bool pressed = false;
    public userIn()
    {

    }

    public bool checkPress() //Error    9   'WindowsFormsApplication1.userIn.checkPress()': not all code paths return a value   C

    {  //<---- it is teling me that a closing bracket is expected here?
         private void key5_Click(object sender, EventArgs e)
    {
             pressed = true;
    }

    private void keyb_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key0_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void keya_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void keye_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key9_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key8_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key7_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void keyd_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void keyf_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key6_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key4_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void keyc_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key3_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key2_Click(object sender, EventArgs e)
    {
        pressed = true;
    }

    private void key1_Click(object sender, EventArgs e)
    {
        pressed = true;
    }


        return pressed; //Error 6   Invalid token 'return' in class, struct, or interface member declaration    

    }
}

} // Error 8 Type or namespace definition, or end-of-file expected

Last line would not fit in the box

Does anyone have any Ideas or suggestions?

As always any help is appreciated!

Answer 1

} for checkPress method comes in end of class, your correct method:

public bool checkPress()
{ 
    return pressed; 
}

and your code should be like this:

using System;
...

namespace WindowsFormsApplication1
{
    class userIn
    {
        bool pressed = false;
        public userIn()
        {

        }

        public bool checkPress() // This method
        {
            return pressed;
        } // Must close here, not end of class

        .
        . 
        .

        private void key1_Click(object sender, EventArgs e)
        {
            pressed = true;
        }
    }
}