MFC Controls Guide: Step-by-Step Tutorial

The Microsoft Foundation Classes (MFC) is a C++ class library provided by Microsoft to simplify the development of Windows applications. MFC controls, a part of the MFC class library, are used to create and manage user interface elements. Here are the general steps for using MFC controls:

1. Add a control to the dialog or window in the resource editor of the MFC application.
2. Use the ClassWizard tool to link a control to a member variable. Select the control, then add a member variable in ClassWizard that will represent that control.
3. Utilize this member variable in the code to manipulate the control, such as setting properties, handling events, and so on.

For instance, if you want to add a button control in an MFC application and display a message box when the button is clicked, you can follow these steps:

1. Add a button control to the dialog box in the resource editor.
2. Use ClassWizard to associate a button control with a member variable, such as m_btnClick.
3. Add a function in the code to handle button click events, such as OnBtnClick(), and link this function to the button’s click event.
4. Add code to pop up a message box in the OnBtnClick() function, such as AfxMessageBox(“Button Clicked”);

By following the above steps, you can successfully add and manipulate an MFC control. It is important to note that the specific usage of MFC controls will vary depending on the type and function of the control, and you can refer to the MFC class library documentation or online resources for more information and sample code.