Visual C++ and MFC Programming 2nd Edition

Visual C++ and MFC Fundamentals Chapter 15: Fundamental Controls

application and you want to refer to it later on, you can declare a CStatic variable in the

header of its parent window. Here is an example:

class CExchangeDlg : public CDialog

{

...
public:
CStatic stcAdvanced;
};

The control variable is available for all controls.

It is a habit for Visual C++ programmers to start the name of a control variable with m_^

Practical Learning: Adding Control Variables

1. Open MSVC again and open the Geometry application created above. If you do not
   have it, open the Geometry2 application that accompanies this book


2. Open the IDD_QUADRILATERAL dialog box and adjust the locations and
   dimensions as you see fit or open the Geometry2 application that accompanies this
   book


3. To declare a control variable, on the dialog box, right-click the edit box on the right
   side of Side and click Add Variable...


4. In the Add Member Variable Wizard,
   in the Variable Type combo box, select CEdit
   in the Category combo box, select Control
   in the Variable Name edit box, type m_SquareSide