Com / Dcom

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

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

VB Code:

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

Quote:

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

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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!

Here's a pretty good explanation.

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

Quote:

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

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'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

Quote:

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

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'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")

Quote:

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Originally posted by harishpatel

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

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'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

Quote:

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Originally posted by harishpatel

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

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

Quote:

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Originally posted by harishpatel

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

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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