Advanced MFC Programming

Chapter 7. Common Dialog Boxes
7.5 Color Dialog Box
Introduction
A color dialog box lets the user choose one or several colors from a pool of available colors. In
Windows, a valid color may be formed by combining red, green and blue colors with different intensities.
There are altogether 16,777,216 possible colors in the system.
In MFC, color dialog box is supported by class CColorDialog. To create a color dialog box, we need to
use class CColorDialog to declare a variable, then call CColorDialog::DoModal() to activate the dialog
box.
In the color dialog box, there are four ways to choose a color (Figure 7-5):
1) Select a color from those listed as Basic colors.
1) Select a color from those listed as Custom colors.
1) Select a color from “color matrix”.
1) Input R, G, B values directly.
The selected color is shown in “Color | Solid” window. When a dialog box is implemented, there are
two things that we can customize: the original selected color and the custom colors. If we do not change
anything, Tc - can customize can p9 r TD 2ck
184