The string specified for ImageDirectory will be prefixed onto the image related properties.
Note that if a particular image's file name starts with a ".", "/" or "\\" character, or contains the ":" character, then that filename will be used as it is without the ImageDirectory prefix.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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