AFX_GLOBAL_DATA::SetLayeredAttrib

Provides a simple way to call the Windows SetLayeredWindowAttributes method.

BOOL SetLayeredAttrib(
   HWND hwnd,
   COLORREF crKey,
   BYTE bAlpha,
   DWORD dwFlags
);

Parameters

[in] hwnd
Handle to the layered window.
[in] crKey
The transparency color key that the Desktop Window Manager uses to compose the layered window.
[in] bAlpha
The alpha value that is used to describe the opacity of the layered window.
[in] dwFlags
A bitwise combination (OR) of flags that specify which method parameters to use. Specify LWA_COLORKEY to use the crKey parameter as the transparency color. Specify LWA_ALPHA to use the bAlpha parameter to determine the opacity of the layered window.

TRUE if this method succeeds; otherwise, FALSE.

Header: afxglobals.h