IListManager::CancelOperation
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Use this method to cancel the specified ListManager operation.
Definition
HRESULT IListManager::CancelOperation(VARIANTvarOpID);
Parameters
varOpID
[in] A VARIANT that specifies the Operation ID of the operation to be cancelled.
Return Values
This method returns an HRESULT indicating whether it completed successfully. See the Error Values section for more details.
Error Values
This method returns S_OK (0x00000000) to indicate success and either standard or custom COM HRESULT error values to indicate failure. For more information about standard COM errors, see Standard COM Errors.
The following table shows the custom COM errors, and the standard COM errors with special meanings, that this method can return.
| Constant | Value | Description |
| E_LM_OPERATION_NOT_FOUND | 0x8C400004 | The operation ID does not represent a currently running operation. |
| E_LM_SQLERROR | 0x8C400003 | Error while executing SQL/ADO operation. |
| OLE_E_BLANK | 0x80040007 | The ListManager object has not been properly initialized. |
Additional information may be available using the global Err object, which can be accessed using the API function GetErrorInfo. In particular, the GetDescription method of the IErrorInfo interface may return a text description of the error.
Remarks
The Operation ID passed to this method in the varOpID parameter can be obtained from any of the following calls when they are executed asynchronously:
In addition, the Operation IDs of all currently active operations can be retrieved using the GetOperations method.
For more information about memory ownership issues related to COM property and method parameters, see Managing COM Parameter Memory.