IRegisteredTask::RunEx method (taskschd.h)

Runs the registered task immediately using specified flags and a session identifier.

Syntax

HRESULT RunEx(
  [in]            VARIANT      params,
  [in]            LONG         flags,
  [in]            LONG         sessionID,
  [in]            BSTR         user,
  [out, optional] IRunningTask **ppRunningTask
);

Parameters

[in] params

The parameters used as values in the task actions. To not specify any parameter values for the task actions, set this parameter to VT_NULL or VT_EMPTY. Otherwise, a single BSTR value, or an array of BSTR values, can be specified.

The BSTR values that you specify are paired with names and stored as name-value pairs. If you specify a single BSTR value, then Arg0 will be the name assigned to the value. The value can be used in the task action where the $(Arg0) variable is used in the action properties.

If you pass in values such as "0", "100", and "250" as an array of BSTR values, then "0" will replace the $(Arg0) variables, "100" will replace the $(Arg1) variables, and "250" will replace the $(Arg2) variables that are used in the action properties.

A maximum of 32 BSTR values can be specified.

For more information and a list of action properties that can use $(Arg0), $(Arg1), ..., $(Arg32) variables in their values, see Task Actions.

[in] flags

A TASK_RUN_FLAGS constant that defines how the task is run.

[in] sessionID

The terminal server session in which you want to start the task.

If the TASK_RUN_USE_SESSION_ID constant is not passed into the flags parameter, then the value specified in this parameter is ignored. If the TASK_RUN_USE_SESSION_ID constant is passed into the flags parameter and the sessionID value is less than or equal to 0, then an invalid argument error will be returned.

If the TASK_RUN_USE_SESSION_ID constant is passed into the flags parameter and the sessionID value is a valid session ID greater than 0 and if no value is specified for the user parameter, then the Task Scheduler service will try to start the task interactively as the user who is logged on to the specified session.

If the TASK_RUN_USE_SESSION_ID constant is passed into the flags parameter and the sessionID value is a valid session ID greater than 0 and if a user is specified in the user parameter, then the Task Scheduler service will try to start the task interactively as the user who is specified in the user parameter.

[in] user

The user for which the task runs.

[out, optional] ppRunningTask

An IRunningTask interface that defines the new instance of the task.

Pass in a reference to a NULL IRunningTask interface pointer. Referencing a non-NULL pointer can cause a memory leak because the pointer will be overwritten.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

This method will return without error, but the task will not run if the AllowDemandStart property of ITaskSettings is set to false for the task.

If IRegisteredTask::RunEx is invoked from a disabled task, it will return S_OK, but the task will not be run.

Requirements

See also

IRegisteredTask

Task Scheduler