SHChangeNotification_Lock function

Locks the shared memory associated with a Shell change notification event.

Syntax

HANDLE SHChangeNotification_Lock(
  HANDLE           hChange,
  DWORD            dwProcId,
  PIDLIST_ABSOLUTE **pppidl,
  LONG             *plEvent
);

Parameters

hChange

Type: HANDLE

A handle to a window received as a wParam in the specified Shell change notification message.

dwProcId

Type: DWORD

The process ID (lParam in the message callback).

pppidl

Type: PIDLIST_ABSOLUTE**

The address of a pointer to a PIDLIST_ABSOLUTE that, when this function returns successfully, receives the list of affected PIDLs.

plEvent

Type: LONG*

A pointer to a LONG value that, when this function returns successfully, receives the Shell change notification ID of the event that took place.

Return Value

Type: HANDLE

Returns a handle (HLOCK) to the locked memory. Pass this value to SHChangeNotification_Unlock when finished.

Requirements

   
Windows version Windows 2000 Professional [desktop apps only] Windows 2000 Server [desktop apps only]
Target Platform Windows
Header shlobj_core.h (include Shlobj.h)
Library Shell32.lib
DLL Shell32.dll (version 6.0 or later)