The EnumWindowsProc function is an application-defined callback function used with the EnumWindows or EnumDesktopWindows function. It receives top-level window handles. The WNDENUMPROC type defines a pointer to this callback function. EnumWindowsProc is a placeholder for the application-defined function name.
BOOL CALLBACK EnumWindowsProc(
HWND hwnd, // handle to parent window
LPARAM lParam // application-defined value
);
To continue enumeration, the callback function must return TRUE; to stop enumeration, it must return FALSE.
An application must register this callback function by passing its address to EnumWindows or EnumDesktopWindows.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Import Library: User-defined.
Windows Overview, Window Functions, EnumWindows, EnumDesktopWindows