AddIn - ObjectDev. A Class Building Addin

Monday Oct 13th 2003 by Jason Fehr

This is an excellent VB6 (5?) addin replacement for the Microsoft Class builder utility. Supports Implemented Interfaces classes and all VB DataTypes. (Originally posted July 30, 2000.)



This whole project began because of my utter loathing for Visual Basic’s Class Builder utility. I spent long amounts of time creating COM objects with repetitive coding. I also became interested in VB add-ins. I then decided to write my own Class Builder utility. I named it ObjectDev because it helps you develop objects. ObjectDev requires a knowledge of COM both to use it and to understand its code. I hope you find ObjectDev a useful and informative tool.

What ObjectDev Does:

ObjectDev allows the user to specify any number of subs, functions, and properties. If Create Interface is selected, ObjectDev then generates an interface and an object which implements the interface. If Create Interface is not selected, then ObjectDev creates an object with no interface. If Persistable is selected, code is added to the ReadProperties and WriteProperties functions which enables persistence. If IsDirty is selected, a property let/get and a boolean is added to the objects. When a property is changed, the IsDirty boolean changes to True. ObjectDev will cut hours off the time required to create components for your program.


When I first began designing ObjectDev, I noticed that if you show another form, the variables on the original form do not hold their values. The best way around this problem was to create global variables to hold the information.


Since I wanted ObjectDev to be flexible, I decided to allow the prefixes on all variables to be changed. Since I allowed this changing, I needed something to hold the prefixes, and CPrefixes was born. CPrefixes is just a straightforward object that does nothing but hold data.

CProperty and CPropertyCollection:

In order to store the properties created by the user, I wrote an object/collection. The properties/functions of CProperty are detailed below. The collection is self-explanatory.

  • PropName - the name of the property

  • ReturnType - enumeration of the type of the property (i.e. string, variant, etc.)

  • Style - specifies if the property is Let/Get, Set/Get, Get (an object), or Get

  • RetAsStr - returns a string with the ReturnType spelled out (i.e. “string”, “variant”, etc)

  • VarName - returns the name of the property’s variable (i.e. ByVal sName as String) if you pass True, then either ByVal or ByRef is added on the front

  • ByType - specifies if the property’s variable is passed ByRef or ByVal


CSubFunction and CSubFunctionCollection:

In order to store the subs/functions created by the user, I wrote these objects. The properties/functions of CProperty are detailed below. The collection is self-explanatory.

  • Arguments - holds the arguments collection for this sub/function (see the doc on CArgument and CArgumentCollection)

  • IsPrivate - specifies if the sub/function is private or public

  • RetAsStr - returns a string with the function return type spelled out (i.e. “string”,“variant”, etc.)

  • ReturnType - an enum which specifies the function return type

  • SubName -the name of the sub/function which will be written in code


CArgument and CArgumentCollection:

In order to store the arguments of each subs/function created by the user, I wrote these objects. The properties/functions of CProperty are detailed below. The collection is self-explanatory.

  • ArgName - the name of the argument which will be written to code

  • ArgOptional - specifies if the argument is optional or not

  • ArgType - the type of the argument (i.e. string, variant, etc.)

  • ByType - specifies if the argument is passed ByVal or ByRef

  • ByTypeAsString - returns “ByVal” or “ByRef” depending on what ByType is

  • TypeAsString - returns a string with the argument type (i.e. FuncName As String, FuncName As Variant, etc.)


Legal Garbage:

I developed this add-in for my personal growth as a Visual Basic developer. I also feel that programmers should help each other out as much as possible. Therefore, I really do not care what you do with this code. I would prefer that you just not compile my code and show everyone this wonderful add-in you created, but you can. If you improve my code, I would appreciate if you give me some credit, but you do not have to. Also, if you improve on my code, I would like you to send your code to me (pclogic15@hotmail.com). In short, you can do whatever you want to with my code. You do not have to give me any compensation or recognition.


I hope you either learn from ObjectDev, find it useful, or both. I would appreciate your comments. Also, I would appreciate a quick email if you find something wrong. Please send all emails to pclogic15@hotmail.com.

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