_com_error::_com_error
Microsoft Specific
Constructs a _com_error object.
_com_error(
HRESULT hr,
IErrorInfo* perrinfo = NULL,
bool fAddRef=false
) throw( );
_com_error(
const _com_error& that
) throw( );
Parameters
- hr
HRESULT information.
- perrinfo
IErrorInfo object.
bool fAddRef=false
Causes the constructor to call AddRef on a non-null IErrorInfo interface. This provides for correct reference counting in the common case where ownership of the interface is passed into the _com_error object, such as:throw _com_error(hr, perrinfo);If you do not want your code to transfer ownership to the _com_error object, and the AddRef is required to offset the Release in the _com_error destructor, construct the object as follows:
_com_error err(hr, perrinfo, true);
- that
An existing _com_error object.
Remarks
The first constructor creates a new object given an HRESULT and optional IErrorInfo object. The second creates a copy of an existing _com_error object.
END Microsoft Specific