Gets or sets keys that must be pressed to zoom the content relative to its
ZoomOrigin using the mouse wheel.
Property Value
All specified keys must be pressed in order for the operation to occur. If None is specified, the relative zoom will occur without any modifier keys. If the collection includes Blocked, a zoom cannot be performed. The default value includes only the Ctrl key.
Target Platforms: Windows 11, Windows 10, 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