How to create Windows DLL with Visual Basic?

[Flaco]

Hi friends,
I don't know much about creating the DLL files in Visual Basic. I have tried to create but was not successful. I even tried to search on the Web but that wasn't also not so useful. So I thought that posting here would help me.!! Please tell me how to create Windows DLL with Visual Basic? Expecting the help like you guys always do.!!

[Warner]

A dynamic link library (DLL) is a library of functions and procedures that can be called an application or another DLL. Using a library in this way has two important functions :

• It allows sharing of code. The same DLL can be used by many other applications and other DLLs. The Win32 API, for example, is implemented as a set of Windows DLLs.
• As long as multiple processes load the same DLL at the same base address, they can share the DLL code. In other words, a single DLL in memory can be used by multiple processes.
• It allows for development based on modular components, making it easier to develop and process upgrade.

[Allan.d]

You should know that when a static library is used in application development, the modules of the library must be incorporated in the final application. With dynamic linking, the modules reside in a DLL which is dynamically loaded, either loading or when the application becomes necessary to call one of its member functions. A dynamic link library can include internal functions, available only in the DLL. Its main purpose, however, provide exported functions, that is to say, functions that reside in a DLL module and can call other DLLs and applications.

[MELTRONICS]

A DLL also includes an optional entry point that is called when a process or thread loads or unloads a DLL. There are some things that you will have to keep in mind. The first is that although it includes a procedure DllMain, no process "by thread" or initialization should be executed. Thus DllMain simply returns true if it is called with the argument equal to fdwReason DLL_PROCESS_ATTACH. Secondly, to provide a Windows DLL is to allow other languages to call. To ensure interoperability, you must limit yourself to the characteristics of languages used by the Win32 API, so that your DLL can be called by the greatest number of environments and platforms possible development.y

[void]

The following code sample might be useful for you to create Windows DLL with Visual Basic :

Option Explicit
'Uncomment the following if using MSXML 4.0
'Private xmlDoc As MSXML2.DOMDocument40
Private mvarIt As String

Public Property Let It(ByVal vData As String)
    mvarIt = vData
End Property

Public Property Get It() As String
    'Uncomment the following if using MSXML 4.0
    'Set xmlDoc = New DOMDocument40
    xmlDoc.async = False
    xmlDoc.loadXML "<" & mvarIt & "/>"
    It = xmlDoc.xml
End Property

Private Sub Class_Initialize()
    mvarIt = "test"
End Sub

Private Sub Class_Terminate()
    Set xmlDoc = Nothing
End Sub