Ok, I figured out how to create radio buttons (they are buttons but you set BS_RADIOBUTTON in CreateWindow). However, I don't know how to use them! How do I make it so that when a button is pressed, it checks which radio button is selected, then do something depending on which radio button is selected?

You can use

(Where button1 is the HWND of your button/ratio) to check if a ratio or check box is checkd. But there is more to ratio buttons than that. I could wrapp up a little example if you need one.

An example would be nice, Dr. Voodoo. But not an example on radio buttons! I know you've already did an example about drop down menus, but I still don't understand some aspects of them. Can you make an example with a drop down menu and a button. When the button is pressed it checks what the value is for the drop down menu, then displays the value in a message box. I think that'll be enough for me to learn about using char with drop down menus, instead of int, float, or double.

Look in the creation forum