Table of Contents
Advertisement
When you place your cursor over a constrained object, you will see a glyph
denoting the object is constrained.
With AutoCAD LT, you can do the following:
View drawings containing constraints created using AutoCAD.
View and edit the geometric and dimensional constraints.
NOTE You cannot create constraints within AutoCAD LT.
Turn Off Perspective View in an AutoCAD Drawing
Set the PERSPECTIVE system variable to 0 to turn off perspective view in an
AutoCAD drawing that is open in AutoCAD LT. You cannot turn on perspective
view in a drawing that is open in AutoCAD LT.
Work with Custom and Proxy Objects
Custom objects provide additional capabilities to the program and related
products. When the application that created the custom object is not available,
a proxy object is substituted in its place.
A custom object is a type of object created by an ObjectARX
Run-Time Extension) application, which typically has more specialized
capabilities than standard AutoCAD LT objects. Custom objects include
parametric solids (AutoCAD
symbols (AutoCAD
associative dimension objects (AutoCAD and AutoCAD LT).
In addition to Autodesk, many software vendors use ObjectARX to write
programs that create graphical and nongraphical custom objects that are useful
in their AutoCAD based applications.
Proxy Objects
A proxy object is a substitute for a custom object when the ObjectARX
application that created the custom object is not available to AutoCAD LT or
other host applications. Later, when the application is available, the proxy
object is replaced by the custom object.
Proxy objects have significantly reduced capabilities compared to their
corresponding custom objects. The extent to which proxy objects can be edited
is determined by the parent ObjectARX application. For example, operations
such as erasing and moving an object, or changing object properties, may or
512 | Chapter 11 Share Data Between Files
®
Mechanical), intelligently interactive door
®
Architecture), polygon objects (AutoCAD
®
(AutoCAD
®
Map 3D), and
Advertisement
Table of Contents
