NKRegOpenKeyExW (Compact 2013)

10/16/2014

This function opens the specified key.

Syntax

LONG NKRegOpenKeyExW(
  HKEY hKey, 
  LPCWSTR lpSubKey, 
  DWORD ulOptions, 
  REGSAM samDesired, 
  PHKEY phkResult
);

Parameters

• hKey
  [in] Handle to an open key or any of the following predefined reserved handle values:

  • HKEY_CLASSES_ROOT
  • HKEY_CURRENT_USER
  • HKEY_LOCAL_MACHINE
  • HKEY_USERS

  The following values are not supported:

  • HKEY_CURRENT_CONFIG
  • HKEY_PERFORMANCE_DATA
  • HKEY_DYN_DATA

• lpSubKey
  [in] Pointer to a null-terminated string that contains the name of the subkey to open.

  If this parameter is NULL or is a pointer to an empty string, the function opens a new handle to the key that hKey identifies. In this case, the function does not close the handles that were previously opened.

• ulOptions
  [in] Reserved; set to 0 (zero).

• samDesired
  [in] Not supported; set to 0 (zero).

• phkResult
  [out] Pointer to a variable that receives a handle to the opened key.

  When you no longer need the returned handle, call the NKRegCloseKey function to close it.

Return Value

The following table shows the possible return values.

Value	Description
ERROR_SUCCESS	Success.
ERROR_NO_MATCH	There was no match for the specified key in the index.
ERROR_NOT_READY	Registry is not ready.

The function might return other standard error codes defined in Winerror.h, as appropriate.

Remarks

This function is only available for use by the OAL. The pfnRegOpenKeyExW member of NKGLOBAL points to this function.

Requirements

Header	pkfuncs.h
Library	coredll.lib

See Also

Reference

Kernel Functions Available to the OAL
NKRegCreateKeyExW
NKRegCloseKey
NKRegQueryValueExW
NKRegSetValueExW