The IMAPIFormInfo::MakeIconFromBinary method builds an icon from an icon property of a form.
See IMAPIFormInfo : IMAPIProp.
HRESULT MakeIconFromBinary(
ULONG nPropID,
HICON FAR * phicon
);
Client applications call the IMAPIFormInfo::MakeIconFromBinary method to build an icon from an icon property of a form. In the nPropID parameter, MakeIconFromBinary takes the property identifier of one of the icon properties of a form. Using this property identifier, it builds an icon that can be displayed in table views that include property columns for icons.