ClipboardObject.IDataObject.EnumFormatEtc Method

Artikel
02/28/2011

Creates an object for enumerating the FORMATETC structures for a data object. These structures are used in calls to IDataObject.GetData or IDataObject.SetData.

Namespace: Microsoft.VisualStudio.Data.Framework
Assembly: Microsoft.VisualStudio.Data.Framework (in Microsoft.VisualStudio.Data.Framework.dll)

Syntax

'Declaration
Private Function EnumFormatEtc ( _
    dwDirection As UInteger, _
    <OutAttribute> ByRef ppenumFormatEtc As IEnumFORMATETC _
) As Integer Implements IDataObject.EnumFormatEtc

int IDataObject.EnumFormatEtc(
    uint dwDirection,
    out IEnumFORMATETC ppenumFormatEtc
)

private:
virtual int EnumFormatEtc(
    unsigned int dwDirection, 
    [OutAttribute] IEnumFORMATETC^% ppenumFormatEtc
) sealed = IDataObject::EnumFormatEtc

private abstract EnumFormatEtc : 
        dwDirection:uint32 * 
        ppenumFormatEtc:IEnumFORMATETC byref -> int 
private override EnumFormatEtc : 
        dwDirection:uint32 * 
        ppenumFormatEtc:IEnumFORMATETC byref -> int

JScript does not support explicit interface implementations.

Parameters

dwDirection
Type: System.UInt32
A value from the DATADIR enumeration that specifies the direction of the data.

ppenumFormatEtc
Type: Microsoft.VisualStudio.OLE.Interop.IEnumFORMATETC%
Out parameter. When this method returns, contains a reference to an enumerator object used to enumerate FORMATETC structures for a data object.

Return Value

Type: System.Int32
This method supports the standard return values E_INVALIDARG and E_OUTOFMEMORY, as well as the following:

Value	Description
S_OK	The enumerator object was successfully created.
E_NOTIMPL	The direction specified by dwDirection is not supported.
OLE_S_USEREG	Requests that OLE enumerate the formats from the registry.

Implements

IDataObject.EnumFormatEtc(UInt32, IEnumFORMATETC%)

Exceptions

Exception	Condition
NotImplementedException	The current clipboard object does not wrap an existing IDataObject (from the Microsoft.VisualStudio.OLE.Interop namespace), and the call through the System.Runtime.InteropServices.ComTypes.IDataObject interface failed.

Remarks

If the clipboard object wraps an existing IDataObject (from the Microsoft.VisualStudio.OLE.Interop namespace), this method delegates the call to the corresponding EnumFormatEtc from that namespace. Otherwise, it attempts to translate the call to EnumFormatEtc from the System.Runtime.InteropServices.ComTypes namespace in case the clipboard object could be wrapping an existing IDataObject.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

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