Mouse Box

The mouse box is an area displayed around the mouse pointer when it hovers over a preview image. This also invokes a zoom window, which displays a larger image of the mouse box area.

ImageZoom - MouseBox

You can use the ImageZoomZoomModeSettings.MouseBoxOpacityMode property to specify the mouse box opacity mode.

Inside Outside
ImageZoom_MouseBoxOpacityMode_Inside ImageZoom_MouseBoxOpacityMode_Outside

The mouse box size is calculated automatically based on the zoom window size and large image size.