Com / Dcom

[harishpatel]

Hi friends,

many greetings,

I want to know how to implement early binding and late binding while creating a com object.

I also want to know array starting element is zero but i want to start array from 4 number element.

I want to know how to create a n number parameters function.

I want to know the details for creating COM component and how to use it.

Regards
Harish

[RobDog888]

Wouldn't it be the same as when you early/late bind in a
standard exe?

Dim oRS As Object 'Late binding
Dim oRS as ADODB.Recordset 'Early binding

[Dave Sell]

Originally posted by harishpatel
I want to know the details for creating COM component and how to use it.

This question gets asked alot here, and gets just as few good answers. Why? It's like asking for help building your own city from scratch (Insert Sim-joke here). There is alot of information out there, but the topic is large, and hard to understand, and frankly becoming legacy.

I recommend getting several books on the topic and put your nose to the grindstone; you've got a lot of work ahead. Better get crackin!

[Jmacp]

Here's a pretty good explanation.

http://www.sei.cmu.edu/str/descriptions/com.html

[Muddy]

Originally posted by harishpatel
I want to know how to implement early binding

'Early binding using Excel for example
'Set a reference to Excel using Project-References menu options in VB IDE then:
Dim objExcel as New Excel.Application

'or you can:

Dim objExcel as Excel.Application
Set objExcel = New Excel.Application

Originally posted by harishpatel
and late binding while creating a com object.

'Late Binding with Excel for example (no need to set Reference with menu options for Late Binding)

Dim objExcel as Object
Set objExcel = CreateObject("Excel.Application")

Originally posted by harishpatel

I also want to know array starting element is zero but i want to start array from 4 number element.

'To make this the default for everything with an element you can
Option Base 4
'Or you can do it as you Dim
Dim myArray(4 to 100) as Integer

Originally posted by harishpatel

I want to know how to create a n number parameters function.

Private Function myFunction(one as integer, two as double, ... , n as Long) As Double
'Code here
end Function

Originally posted by harishpatel

I want to know the details for creating COM component and how to use it.

When starting a project in VB6, select ActiveX exe or ActiveX DLL instead of EXE. Access and use the compiled project (dll or exe) using early or late binding