通过

IMessage::DeleteAttach

  • 项目

Applies to: Office 2010 | Outlook 2010 | Visual Studio

Deletes an attachment.

HRESULT DeleteAttach(
ULONG ulAttachmentNum,
ULONG_PTR ulUIParam,
LPMAPIPROGRESS lpProgress,
ULONG ulFlags
);

Parameters

  • ulAttachmentNum
    [in] Index number of the attachment to delete. This is the value for the attachment's PR_ATTACH_NUM (PidTagAttachNumber) property.

  • ulUIParam
    [in] Handle to the parent window of any dialog boxes or windows this method displays. The ulUIParam parameter is ignored unless the ATTACH_DIALOG flag is set in the ulFlags parameter.

  • lpProgress
    [in] Pointer to a progress object that displays a progress indicator. If NULL is passed in lpProgress, the message store provider displays a progress indicator using the MAPI progress object implementation. The lpProgress parameter is ignored unless the ATTACH_DIALOG flag is set in ulFlags.

  • ulFlags
    [in] Bitmask of flags that controls the display of a user interface. The following flag can be set:

    • ATTACH_DIALOG
      Requests the display of a progress indicator as the operation proceeds.

Return Value

  • S_OK
    The attachment was successfully deleted.

Remarks

The IMessage::DeleteAttach method deletes an attachment from within a message.

A deleted attachment is not permanently deleted until the message's IMAPIProp::SaveChanges method has been called.

Notes to Callers

Before calling DeleteAttach, call the IUnknown::Release method for the attachment and each of its streams.

Because deleting an attachment can be a lengthy process, DeleteAttach provides the mechanism that displays a progress indicator. You can request the display of a progress indicator by passing a pointer to your IMAPIProgress : IUnknown implementation or NULL if you do not have an implementation. You must also specify a window handle in the ulUIParam parameter and the ATTACH_DIALOG flag in the ulFlags parameter.

MFCMAPI Reference

For MFCMAPI sample code, see the following table.

File

Function

Comment

AttachmentsDlg.cpp

CAttachmentsDlg::OnDeleteSelectedItem

MFCMAPI uses the IMessage::DeleteAttach method to delete the selected attachment.

See Also

Reference

IMAPIProp::SaveChanges

IMessage : IMAPIProp

Concepts

MFCMAPI as a Code Sample