AutoCAD 2010 Secondary Development Example Tutorial330

AutoCAD 2010 is a powerful computer-aided design (CAD) software that allows users to create and edit 2D and 3D models. It is widely used in various industries, including architecture, engineering, and manufacturing.

Secondary development of AutoCAD 2010 involves creating custom applications and features that extend the software's functionality. This can be achieved through programming languages such as Visual Basic for Applications (VBA) and ObjectARX.

In this tutorial, we will provide step-by-step instructions on how to create a simple secondary development application in AutoCAD 2010 using VBA. We will create a custom command that adds a circle to the drawing.

Creating a New VBA Project

1. Open AutoCAD 2010.

2. Click on the "Visual Basic Editor" icon in the "Tools" menu.

3. In the VBA Editor, click on "File" > "New" > "Project."

4. Save the project to a desired location.

Adding a Custom Command

1. In the VBA Editor, right-click on the project name in the "Project Explorer" pane.

2. Select "Insert" > "Module."

3. Paste the following code into the module:```vba
Public Sub AddCircle()
Dim doc As AcadDocument
Dim db As AcadDatabase
Dim ent As AcadEntity
Set doc =
Set db =
Set ent = (0, 0, 1)
ent
End Sub
```

4. Save the VBA project.

Loading the Custom Command

1. In AutoCAD, type "APPLOAD" at the command prompt.

2. In the "Load/Unload Applications" dialog box, click on "Browse..."

3. Navigate to the location where you saved the VBA project (.dvb file) and select it.

4. Click on "Load."

5. Close the "Load/Unload Applications" dialog box.

Executing the Custom Command

To execute the custom command, type "CIRCLEADD" at the command prompt. A circle will be added to the drawing with a radius of 1 unit.

Further Development

The example provided in this tutorial is just a simple demonstration of secondary development in AutoCAD 2010 using VBA. You can further develop more complex applications and features to extend the software's functionality according to your specific requirements.

AutoCAD 2010 provides a rich set of programming interfaces and tools for secondary development. By leveraging these resources, you can unleash the full potential of AutoCAD and create custom solutions that meet your unique needs.

2025-02-04

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