There are 2 picking modes in DEX
Pick
In this mode only top level objects are picked. Click the Edit→Select→
button.
Sub-pick
In this mode you can pick objects that are components of other objects. This is good for selecting objects inside a group or symbol/footprint. Click the Edit→Select→
button.
Single Selection
To select single objects, click on the object in the viewport.
If you hold the Shift key then the object you select will be added to the selected items if it is not already selected else it will be removed from the selected item.
Window Pick
To select multiple objects left-click and hold in an area not occupied by any objects and drag the mouse. As you drag the mouse you will see all objects inside the rectangle defined by the initial mouse press and the current location of the mouse are selected. The objects must be completely inside the picking rectangle.
Select All
Click the Edit→Select→
button to select all objects on a sheet.
Invert selection
Click the Edit→Select→
button to invert the selection. All selected objects become unselected and all previously unselected objects become selected.
Deselect All
Click the Edit→Select→
button to deselect all objects in a sheet.