OpenThread function

Opens an existing thread object.

Syntax

HANDLE OpenThread(
  DWORD dwDesiredAccess,
  BOOL  bInheritHandle,
  DWORD dwThreadId
);

Parameters

dwDesiredAccess

The access to the thread object. This access right is checked against the security descriptor for the thread. This parameter can be one or more of the thread access rights.

If the caller has enabled the SeDebugPrivilege privilege, the requested access is granted regardless of the contents of the security descriptor.

bInheritHandle

If this value is TRUE, processes created by this process will inherit the handle. Otherwise, the processes do not inherit this handle.

dwThreadId

The identifier of the thread to be opened.

Return Value

If the function succeeds, the return value is an open handle to the specified thread.

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

Remarks

The handle returned by OpenThread can be used in any function that requires a handle to a thread, such as the wait functions, provided you requested the appropriate access rights. The handle is granted access to the thread object only to the extent it was specified in the dwDesiredAccess parameter.

When you are finished with the handle, be sure to close it by using the CloseHandle function.

Requirements

   
Minimum supported client Windows XP [desktop apps | UWP apps]
Minimum supported server Windows Server 2003 [desktop apps | UWP apps]
Target Platform Windows
Header processthreadsapi.h (include Windows Server 2003, Windows Vista, Windows 7, Windows Server 2008 Windows Server 2008 R2, Windows.h)
Library Kernel32.lib
DLL Kernel32.dll

See Also

CloseHandle

GetExitCodeThread

GetThreadContext

Process and Thread Functions

ResumeThread

SetThreadContext

SetTokenInformation

SuspendThread

TerminateThread

Threads