Selecting items within Draft it is a straightforward process. Single and multiple selections are possible and items can be added to and removed from the current 'selection set' (see below).
The Selection Set is defined as the items currently selected. The line style of these items will be temporarily changed to a dashed style (highlight style)
and the entity handles will be displayed providing the Entity Selection Limit for Handle Display has not been exceeded.
Selecting a single item
Simply left click on the required item when the cursor is placed over it. The display of the selected item is then changed to the highlight style.
Clicking on another item will clear the current 'selection set' and select the new item clicked.
Clearing the selection set
The 'selection set' is cleared by executing a left mouse click in a clear area of the drawing.
Selecting items within a box
To select items within a rectangular box requires two opposing corners of an imaginary box to be indicated within the drawing area.
Simply click and hold down the mouse button to indicate the first point of the box, a rectangle will then dynamically follow the cursor as it is moved.
(If moved to the right a solid (window) box will be displayed, to the left a dotted (crossing) box is shown.) Release the mouse button at the opposing corner to define the box.
The items selected by the box will depend upon whether the box was solid (window) or dotted (crossing).
If solid then only items completely within the window box will be selected, if dotted then any item passing through the crossing box in whole or in part will be selected.
The picture here shows the affect of using the different types of selection box. The selection areas are the same size and relative position but because the points are picked differently you will see
in window selection box that only the left vertical line and the two left most circles are highlighted. However on the crossing selection
box more entities are highlighted because any items passing through the box are selected.
Selection Set - adding and removing items
The shift keyand control key keyboard buttons can be used to add and remove items from the selection set.
Holding down the shift key key always adds items to the selection set. .i.e. Holding down shift key and clicking on an item adds that item to the selection,
if the item is already selected, nothing changes. If selecting items within a box then any not already picked are added, whilst previously selected items are retained.
Holding down the control key key always toggles items in to or out of the selection set. i.e. Holding down control key and clicking on an item adds it to the selection
if the item is not already picked, otherwise if already selected the item is removed. If selecting items within a box then any items not already picked are added,
whilst previously selected items are removed.
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