Visual C++ and MFC Programming 2nd Edition

Chapter 17: Track-Based Controls Visual C++ and MFC Fundamentals

17.1 Spin Button...................................................................................................

17.1.1..Overview...............................................................................................

A spin button is a Windows control equipped with two opposite arrows. The user

clicks one of the arrows at one time to increase or decrease the current values of the

control. The value held by the control is also called its position. The values of a spin

button range from a minimum to a maximum. When the up arrow is clicked the value of

the control increases. If the user clicks and holds the mouse on the up pointing arrow. The

value of the control keeps increasing until it reaches its maximum and stops. The

opposite behavior applies when the user clicks or holds the mouse on the down-pointing

arrow.

Because a spin button is only equipped with arrows, it does not inherently show its

current value. Therefore, this control is usually accompanied by another, text-based,

control, usually an edit box, that indicates its position.

We are going the create a dialog box equipped with a large static control and three spin

buttons. The background color will change when the spin buttons change values:

Practical Learning: Introducing a Spin Button

1. Create a new Dialog-Based application with no About Box and name it
   ColorPreview


2. Set the Dialog Title to Color Preview and click Finish


3. Delete the TODO line and the OK button


4. Change the Caption of the Cancel button to Close