AppointmentItem.BeforeAttachmentPreview event (Outlook)
Occurs before an attachment associated with an instance of the parent object is previewed.
expression A variable that represents an AppointmentItem object.
|Attachment||Required||Attachment||The Attachment to be previewed.|
|Cancel||Required||Boolean||Set to True to cancel the operation; otherwise, set to False to allow the Attachment to be previewed.|
This event occurs before an attachment is previewed, either from the attachment strip in the Reading Pane of the active explorer or from the active inspector.
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