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AutoCAD is a professional design tool that has a wide user base, spanning many different industries. There are now two AutoCAD versions, AutoCAD R18.2 released in October 2016 and AutoCAD LT 18.2 released in April 2017. AutoCAD (desktop) is subscription software, while AutoCAD LT is a perpetual license product. AutoCAD R18.2 has all of the features of AutoCAD LT 18.2 and adds new features and options.

As of January 2018, Autodesk said that AutoCAD LT 2018 is the last version of AutoCAD LT for desktops that support 32-bit processors. Autodesk said that Autocad LT for desktops will be discontinued in January 2019, with no new version currently planned.

Table of Contents

What Is AutoCAD?

AutoCAD is a commercial CAD software application and it is used to create 2D and 3D drawings and model data. It is a direct descendant of AutoCAD DWG, which was a non-linear data editor for drafting 2D and 3D drawings and models. AutoCAD also features many of the functions of the discontinued AutoCAD LT desktop software, including the ability to create parametric drawings, drawing templates, and 3D drawings.

AutoCAD is designed to make it easier for a user to create 2D and 3D drawings by offering features such as an integrated graphical interface (IGI), an object-based architecture, and the ability to create forms, construction drawings, and assembly drawings, among other things.

While the main purpose of AutoCAD is to create 2D and 3D drawings, many features can be used to create other types of data, such as 2D architectural or mechanical drawings. The various features are grouped into different “layers,” and these layers can be accessed by either selecting a type of object to edit or by using the icons located in the toolbar.

AutoCAD has several major components. Some of the more basic features are:

An Application Manager (menu bar icon).

A toolbox, containing the icons for the various tools and commands.

A system tray, containing the icons for AutoCAD’s various settings.

A drawing window, where you can draw or design drawings.

The Browsing window, which is an organizational tool that lets you add and edit layers and view data.


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Design applications
Other third-party CAD applications support AutoCAD Free Download as a CAD format. They generally do not provide the same level of interoperability with AutoCAD as other CAD applications do.

CAD applications

There are many other applications which provide the capability to draw and edit with a program that follows the same rules and conventions of the AutoCAD design software. Many are specialized applications to draw and edit specific engineering, architectural and mechanical design tasks. These CAD applications generally operate on their own file formats and may or may not use the same file formats as AutoCAD.

Military and government
For the U.S. Department of Defense, multiple vendors offer the following product lines. In 2011, the Department of Defense outlined a common set of 3D content standards for the Defense Advanced Research Projects Agency (DARPA), the U.S. Army, and the U.S. Air Force. It also called for the development of a commercial release of the 3D content. As of 2012, a number of public-private partnerships had been formed to lead efforts for the adoption of a common 3D file format.

AutoCAD not only allows users to extend the design environment through plugins, but also provides a standard way to develop and distribute Add-ons via the Autodesk Exchange Apps.

AutoCAD Architecture
AutoCAD Architecture is a plugin created by Autodesk to be a part of the AutoCAD system. It is a Windows application developed in the Visual LISP programming language that implements a number of architectural and building design features within AutoCAD. The development of the Autodesk Architectural Suite occurred after the release of AutoCAD LT, in order to address the lack of architectural features in AutoCAD LT. The suite allows importing of both CAD files and free form drawing into AutoCAD.

Other applications
3D Content.3D is an AutoCAD plug-in that provides building support for 3D buildings and land-use models such as zoning, size and quantity. The files can be imported and exported from other CAD applications.
AggreDraw is a computer aided design application based on AggreTech BIM technology that lets you design and analyze 3D models.
BasiCAD is a topological design package supporting 2D design, 3D drafting and embedded computing. It is a BIM-enabled system that connects to the Autodesk WorldBuilder BIM

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Open the Autocad file type association manager:

– From start menu open:
Programs and Features

– On the right side, expand:
Windows Explorer
Right click:
In the window that opens, check:
File Type Associations
Right click:
Open With
Autocad 2010(*.dwg)
Set as default program

– Wait while Autocad loads, after loading, the autocad file type association will be set and it will be set as default program to open the file type:

– Open and view the file.


Change background color of a listview on user click

I have the following code. My issue is that I want to highlight each list view item when a user clicks on it. But when I click on an item, it does not highlight. I’m not getting any errors either.
What am I doing wrong?
lv.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView arg0, View arg1, int arg2, long arg3) {

lv.getBackground().setColorFilter(Color.GREEN, Mode.MULTIPLY);



As a first step, you need to know that the order of parameters of setColorFilter is wrong.

public void setColorFilter(ColorFilter cf, int displayId)
cf – ColorFilter to use, or null.
displayId – Id of the view’s display, or 0.

So, the right way to use it is:
lv.getBackground().setColorFilter(Color.GREEN, Color.BLUE);

Further, you need to set this color before you set the adapter of your listview.
So, your code will look like this:
public void onItemClick(AdapterView arg0, View arg1, int arg2, long arg3) {

What’s New in the AutoCAD?

Draft and in-place modeling:

Easily build accurate 3D models and adjust them to the context of your drawing before you print or export. (video: 2:12 min.)

Removes existing components and inverts selections, and aligns plans and sections. Drafting capabilities come to the command line.

Adobe Illustrator 32, Flash Builder, Dreamweaver, Apple Scripting, and Photoshop

CAD updates in Adobe Illustrator, Adobe Flash Builder, and Adobe Dreamweaver

Adobe Photoshop

Improvements to the Adobe Stock Library:

Create and embed layers for high-resolution images and videos. (video: 1:33 min.)

New document templates in Adobe Stock:

Built-in templates include a series of commonly used files, such as construction drawings, architectural plans, blueprints, site plans, floor plans, and architectural sections.

Tiled PDFs in a standard A4 or legal-sized canvas.

Print multiple high-quality PDFs at once to reduce printing costs.

Add more than 2,500 images to your Adobe Stock Library without additional fee.

Speed up the loading of large projects with navigation libraries.

New design tools for developers in Adobe Flash Builder and Dreamweaver:

New libraries and components for use in Flash Builder or Dreamweaver.

Access a library of symbols, including icons, clip arts, gauges, buttons, and more.

Maintain a library of symbols in an open project.

Make a single symbol appear in multiple components in a single Flash Builder or Dreamweaver window.

New features in the Magic Line tool, the vector tool, and the transparency tool:

Improved performance, accuracy, and support for vector images.

Easily create a grid or an alignment guide using magic lines.

Edit your line style with the vector tool.

Add a pattern to a line or an object.

Add transparency to line objects.

Magic-line search improvements.

Better visibility for single-line autocomplete.

Easier way to change line style, using the vector tool.

New tools in the vector tool:

Free-hand painting.

Draw a line with any width.

Draw a circle or square.

Draw a filled polygon.

Add a colored border.

Add a colored fill

System Requirements For AutoCAD:

Mac OS X 10.6 or later
Intel Pentium 4 or higher processor (1.6GHz)
1 GB of RAM (2 GB recommended)
12 GB of available space
Windows 7 or later
Windows XP or higher processor (1.6GHz)
Recommended System Requirements:
Mac OS X 10.7 or later
Intel Core 2 Duo or higher processor (1.6GHz