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C++ and VC++ Code Generator Tool, Free UML Class Diagram Drawing Tool

 By darkoman. 

A free C++ code generator tool with source code.


This article is about a free C++ code generator tool. The code generator does what its name says: it generates source code based on an object model (like a UML class drawing diagram tool ), which represents the logical structure of your classes. It also helps you develop your applications faster and change things inside their structure, using a graphical user interface.

Using the Application

This submission is a tool, so the source code will not be discussed here. Instead, I will discuss how to use the tool.

The code generator has a graphical user interface by which you can build and manipulate simple UML class definitions on the screen. To insert a new class, select the Insert->Class... option from the main menu. The new class object will appear on the screen. You can place it wherever you want by dragging it. Similarly, to insert a new struct, select Insert->Struct... from the main menu and the new struct object will appear on the screen.

To change a class's settings, double click on the class object. The following dialog box will appear:

ClassOptionsDialog - General Page

Here, you can change the names of the class and its header and implementation files. You can also add author information and a short class description.

On the next page you can add member variables and properties to your class:

ClassOptionsDialog - Class Members Page

The settings on this tab page will be easily recognizable by C++ developers, so I will not waste space in this article by explaining them all in detail. The interesting option here is the Declare as property checkbox which, when enabled, will cause a pair of accessor methods (GetPropertyName() and SetPropertyName()) to be added to read/write values directly to the member variable. You have to specify a name for the property before you add it.

The next tab page is for class methods:

ClassOptionsDialog - Class Methods Page

Just as you can add member variables, you can also add class methods by declaring them on this tab page. A default method body will be generated in the class implementation file.

There are also additional class settings that you can change:

ClassOptionsDialog - Other Settings Page

Here you can add inheritance parents to this class (the classes that current class is derived from), include MFC precompiled headers, and turn on/off comment generation. Comments are important since the code can turn into a real mess later, and you will not be able to find what you need if you don't add explanations to what you create.

Working with structs is simpler than working with classes so I will not take the time to explain it.

Using the Results

After you build your class diagram you can select Build->Generate files option from the main menu and VisualClassBuilder will generate the required C++ files in the default output directory for you. From there, you can add them to your Visual Studio (or other) project.

Also, you can print the class diagram you have built by selecting File->Print from the main menu. To save your work, use File->Save. To load a saved project, use File->Open.

Points of Interest

I needed a tool like this one to speed up my work on different projects that use a similar class structure, so that I could avoid having to write the same source code multiple times.

VisualClassBuilder v1.0 features:

  • Class generation
  • Struct generation
  • Class inheritance support
  • MFC precompiled header support
  • Comments generation
  • Project saving/loading
  • Class diagram printing


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