If you're generating buttons in a pattern, you can use for loops. Example:

function OnGUI(){
    for (var 1 : int = 0; i <= yourArray.length; i++){
        yourArray[i] = GUI.Button(Rect(10*i,0,10,10),image[i]);
        if (yourAray[i]){
            //Your code here
        }
    }
}

This will mass create and check buttons in each array item. It's important to say that yourArray will hold the buttons (boolean value), not their content. Just put your code in the defined spade and you're done. P.S.: This example will create a row of buttons. It's recommendable that you use a grid generator intead if you plan to display multiple rows (that's very easy to find).

image is the array of icons for your buttons. You can also use text if youd efine as a String array.

Just create a struct with two public members ("Rect buttonRect" and "Texture buttonTexture"), finally declare the list object as array of your struct

I just gave someone else an example of creating a grid of buttons from a multidimentional array on this question... Infect the blank cubes

Take a look at it. It might me of some help to you as well.

-Larry