public bool MaintainAspectRatio {get; set;}
get_MaintainAspectRatio();
set_MaintainAspectRatio(value);
When selecting an AnnRectangleObject, any annotation object that derives from AnnRectangleObject, or a AnnGroupObject, eight thumbs appear. If MaintainAspectRatio is true (default), dragging one of the four corner thumbs will change the size of the annotation object while maintaining its aspect ratio. If this value is false, the aspect ratio is not preserved.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2