EnumWindowsProc callback function

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.

Syntax

BOOL CALLBACK EnumWindowsProc(
  _In_ HWND   hwnd,
  _In_ LPARAM lParam
);

Parameters

• hwnd [in]
  A handle to a top-level window.

• lParam [in]
  The application-defined value given in EnumWindows or EnumDesktopWindows.

Return value

To continue enumeration, the callback function must return TRUE; to stop enumeration, it must return FALSE.

Remarks

An application must register this callback function by passing its address to EnumWindows or EnumDesktopWindows.

Requirements

See also

Reference

EnumWindows

Conceptual

Windows

Other Resources

EnumDesktopWindows