Hymake, I think the problem is largely due to you drawing the button as a sprite.  I added two lines to your program.  The button.Button.Show() actually draws the button as a sprite on the screen.  This is very important step - as this makes the button sprite something that can be interacted with.  Notice... that you still ...

Here's my tab program - very simple, I did it in about 30 to 40 minutes ( including the screenshots and image editing ). For the program to work, you need to copy the images files the My Phrogram Files\Media\Images folder. I hope you can use this program for something.

Here is one method using a class.  The supplied class does no word wrap, it is a simple control for one line of text. Putting the input code in a class allows for multiple lines of input by creating multiple instances of the class.  I added .TXT to the KPL file to allow upload.  Rename it by removing the .TXT extention after ...