OnBegin
Instructs the library to continue progress of an operation.
Syntax
HRESULT OnBegin();
Parameters
None.
Return Value
The following table describes possible return values.
| Return Value | Description |
|---|---|
S_OK |
Indicates success. The operation continues. |
E_ABORT |
The client has requested to cancel the operation. For example, if the user clicks Cancel, the client returns this code. |
Remarks
This method is used in callbacks for various tracing actions, such as starting or stopping a trace. It is called just before the action begins.