OpenTransaction function (ktmw32.h)

Opens an existing transaction.

Syntax

HANDLE OpenTransaction(
  [in] DWORD  dwDesiredAccess,
  [in] LPGUID TransactionId
);

Parameters

[in] dwDesiredAccess

The access to the transaction object. You must have read and write access to work with a transaction. See Transaction Access Masks for a list of valid values.

[in] TransactionId

The GUID that identifies the transaction to be opened. This is commonly referred to as a unit of work for the transaction.

Return value

If the function succeeds, the return value is a handle to the transaction.

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

The following list identifies the possible error codes:

Remarks

Clients close the transaction handle by using the CloseHandle function. If the last transaction handle is closed without anyone calling the CommitTransaction function on the transaction, then the KTM implicitly rolls back the transaction.

Requirements

See also

CommitTransaction

CreateTransaction

Kernel Transaction Manager Functions

RollbackTransaction

Transaction Access Masks