RegQueryReflectionKey function (winreg.h)

Determines whether reflection has been disabled or enabled for the specified key.


LONG RegQueryReflectionKey(
  [in]  HKEY hBase,
  [out] BOOL *bIsReflectionDisabled


[in] hBase

A handle to the registry key. This handle is returned by the RegCreateKeyEx, RegCreateKeyTransacted, RegOpenKeyEx, or RegOpenKeyTransacted function; it cannot specify a key on a remote computer.

[out] bIsReflectionDisabled

A value that indicates whether reflection has been disabled through RegDisableReflectionKey or enabled through RegEnableReflectionKey.

Return value

If the function succeeds, the return value is ERROR_SUCCESS.

If the function fails, the return value is a nonzero error code defined in Winerror.h. You can use the FormatMessage function with the FORMAT_MESSAGE_FROM_SYSTEM flag to get a generic description of the error.


On WOW64, 32-bit applications view a registry tree that is separate from the registry tree that 64-bit applications view. Registry reflection copies specific registry keys and values between the two views.

To disable registry reflection, use the RegDisableReflectionKey function. To restore reflection for a disabled key, use the RegEnableReflectionKey function.


Requirement Value
Minimum supported client Windows Vista, Windows XP Professional x64 Edition [desktop apps only]
Minimum supported server Windows Server 2008, Windows Server 2003 with SP1 [desktop apps only]
Target Platform Windows
Header winreg.h (include Windows.h)
Library AdvApi32.lib
DLL AdvApi32.dll

See also





Registry Functions

Registry Redirector