Thread32First
Retrieves
information about the first thread of any process encountered in a system
snapshot.
BOOL WINAPI Thread32First(HANDLE hSnapshot,
LPTHREADENTRY32 lpte);
Parameters
hSnapshot
Handle
of the snapshot returned from a previous call to the CreateToolhelp32Snapshot function.
lpte
Address
of a THREADENTRY32
structure.
Return Value
Returns TRUE
if the first entry of the thread list has been copied to the buffer or FALSE
otherwise. The ERROR_NO_MORE_FILES error value is returned by the GetLastError function if no threads
exist or the snapshot does not contain thread information.
Remarks
The
calling application must set the dwSize member of THREADENTRY32
to the size, in bytes, of the structure. Thread32First changes dwSize
to the number of bytes written to the structure. This will never be greater
than the initial value of dwSize, but it may be smaller. If the value is
smaller, do not rely on the values of any members whose offsets are greater
than this value.
To
retrieve information about other threads recorded in the same snapshot, use the
Thread32Next
function.