introduction-to-atl-window-classes.md

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Introduction to ATL Window Classes | Microsoft Docs		11/04/2016			cpp-windows		article	C++	window classes	503efc2c-a269-495d-97cf-3fb300d52f3d	11	mikeblome	mblome	ghogen

Introduction to ATL Window Classes

The following ATL classes are designed to implement and manipulate windows:

• CWindow allows you to attach a window handle to the CWindow object. You then call CWindow methods to manipulate the window.

• CWindowImpl allows you to implement a new window and process messages with a message map. You can create a window based on a new Windows class, superclass an existing class, or subclass an existing window.

• CDialogImpl allows you to implement a modal or a modeless dialog box and process messages with a message map.

• CContainedWindowT is a prebuilt class that implements a window whose message map is contained in another class. Using CContainedWindowT allows you to centralize message processing in one class.

• CAxDialogImpl allows you to implement a dialog box (modal or modeless) that hosts ActiveX controls.

• CSimpleDialog allows you to implement a modal dialog box with basic functionality.

• CAxWindow allows you to implement a window that hosts an ActiveX control.

• CAxWindow2T allows you to implement a window that hosts a licensed ActiveX control.

In addition to specific window classes, ATL provides several classes designed to make the implementation of an ATL window object easier. They are as follows:

• CWndClassInfo manages the information of a new window class.

• CWinTraits and CWinTraitsOR provide a simple method of standardizing the traits of an ATL window object.

See Also

Window Classes