The viewer has an image when the value of ImageSize is not empty (0,0). In other words, if Image contains a valid image or if the user set the value of ImageSize directly.
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