Method ClearViewport
ClearViewport()
Clears Viewport with the normal background.
public void ClearViewport()
Remarks
If ViewportSettings has ClearContentOnly only the portion of the content area that is visible within the Viewport will be cleared. This is useful for views that have a content area larger than the Viewport (e.g. when AllowNegativeLocation is enabled) and want the area outside the content to be visually distinct.