Answer Posted / sam
Anchors fasten an edge of one object to an edge of another
object, ensuring that they maintain their relative
positions. For example, you can anchor boilerplate text to
the edge of a variable-sized repeating frame, guaranteeing
the boilerplate's distance and position in relation to the
repeating frame, no matter how the frame's size might
change. Anchors determine the vertical and horizontal
positioning of a child object relative to its parent. The
child object may be either outside of or contained within
the parent. Since the size of some layout objects may
change when the report runs (and data is actually fetched),
you need anchors to define where you want objects to appear
relative to one another. An anchor defines the relative
position of an object to the object to which it is
anchored. Positioning is based on the size of the objects
after the data has been fetched rather than on their size
in the editor. It should also be noted that the position of
the object in the Paper Layout view affects the final
position in the report output. Any physical offset in the
layout is incorporated into the percentage position
specified in the Anchor properties.
There are two types of anchors:
Implicit anchors:::
At runtime, Reports Builder generates an implicit anchor
for each layout object that does not already have an
explicit anchor. It determines for each layout object which
objects, if any, can overwrite it, then creates an anchor
from the layout object to the closest object that can
overwrite it. This prevents the object from being
overwritten. The implicit anchor functionality saves you
from having to define the positioning of each object.
Implicit anchors are not visible in the Paper Layout view.
However, you can specify in the Object Navigator Options
dialog box that the Object Navigator display anchoring
information. By default, objects are anchored to the upper
left corner of their enclosing object. If this view of the
Object Navigator does not show anchoring information for an
object, you can assume that the object is anchored to its
enclosing object, which might be the frame or the body.
Explicit anchors:::
You can create an anchor in the Layout editor using the
Anchor tool, dragging from one edge of the child to the one
of the parent's edges. Any anchor you create for an object
will override its implicit anchoring. Explicit anchors are
always visible in the Paper Layout view unless you specify
otherwise in the Layout Options dialog box.
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