GetHandleInformation function

Retrieves certain properties of an object handle.

Syntax

BOOL WINAPI GetHandleInformation(
  _In_  HANDLE  hObject,
  _Out_ LPDWORD lpdwFlags
);

Parameters

hObject [in]

A handle to an object whose information is to be retrieved.

You can specify a handle to one of the following types of objects: access token, console input buffer, console screen buffer, event, file, file mapping, job, mailslot, mutex, pipe, printer, process, registry key, semaphore, serial communication device, socket, thread, or waitable timer.

lpdwFlags [out]

A pointer to a variable that receives a set of bit flags that specify properties of the object handle or 0. The following values are defined.

Value	Meaning
HANDLE_FLAG_INHERIT 0x00000001	If this flag is set, a child process created with the bInheritHandles parameter of CreateProcess set to TRUE will inherit the object handle.
HANDLE_FLAG_PROTECT_FROM_CLOSE 0x00000002	If this flag is set, calling the CloseHandle function will not close the object handle.

 

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Requirements

See also

CloseHandle

CreateProcess

Handle and Object Functions

SetHandleInformation