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DECLARE_WND_CLASS_EX

Allows you to specify the name of an existing window class on which a new window class will be based. Place this macro in an ATL ActiveX control's control class.


DECLARE_WND_CLASS_EX( 
      WndClassName, 
      style, 
      bkgnd  
)

Parameters

WndClassName

[in] The name of the new window class. If NULL, ATL will generate a window class name.

style

[in] The style of the window.

bkgnd

[in] The background color of the window.

This macro allows you to specify the class parameters of a new window class, whose information will be managed by CWndClassInfo. DECLARE_WND_CLASS_EX defines the new window class by implementing the following static function:

static CWndClassInfo& GetWndClassInfo();

If you want to use the default styles and background color, use the DECLARE_WND_CLASS macro. For more information about using windows in ATL, see the article ATL Window Classes.

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