DataObject.IDataObject.DAdvise(FORMATETC, ADVF, IAdviseSink, Int32) Method


Creates a connection between a data object and an advisory sink. This method is called by an object that supports an advisory sink and enables the advisory sink to be notified of changes in the object's data.

 virtual int System.Runtime.InteropServices.ComTypes.IDataObject.DAdvise(System::Runtime::InteropServices::ComTypes::FORMATETC % pFormatetc, System::Runtime::InteropServices::ComTypes::ADVF advf, System::Runtime::InteropServices::ComTypes::IAdviseSink ^ pAdvSink, [Runtime::InteropServices::Out] int % pdwConnection) = System::Runtime::InteropServices::ComTypes::IDataObject::DAdvise;
int IDataObject.DAdvise (ref System.Runtime.InteropServices.ComTypes.FORMATETC pFormatetc, System.Runtime.InteropServices.ComTypes.ADVF advf, System.Runtime.InteropServices.ComTypes.IAdviseSink pAdvSink, out int pdwConnection);



A FORMATETC structure, passed by reference, that defines the format, target device, aspect, and medium that will be used for future notifications.


One of the ADVF values that specifies a group of flags for controlling the advisory connection.


A pointer to the IAdviseSink interface on the advisory sink that will receive the change notification.


When this method returns, contains a pointer to a DWORD token that identifies this connection. You can use this token later to delete the advisory connection by passing it to DUnadvise(Int32). If this value is zero, the connection was not established. This parameter is passed uninitialized.


This method supports the standard return values E_INVALIDARG, E_UNEXPECTED, and E_OUTOFMEMORY, as well as the following:

Value Description
S_OK The advisory connection was created.
E_NOTIMPL This method is not implemented on the data object.
DV_E_LINDEX There is an invalid value for lindex; currently, only -1 is supported.
DV_E_FORMATETC There is an invalid value for the pFormatetc parameter.
OLE_E_ADVISENOTSUPPORTED The data object does not support change notification.



This member is an explicit interface member implementation. It can be used only when the DataObject is cast to an IDataObject interface.

Applies to