How To Use RegObji.exe to Copy a Registry Key Programmatically (297292)

SUMMARY

This article serves two purposes:

Demonstrate how to use RegObji.exe to copy a registry key to another location in the registry.
Demonstrate how to use a registry key that contains binary data (specified as type REG_BINARY) because the examples that come with RegObji.exe do not demonstrate how to handle a binary registry value.

The code sample in this article does not store the REG_BINARY value. If you need to preserve a value by assigning it to a variable, you can store the binary data in a variable of the VARIANT datatype.

The following file is available for download from the Microsoft Download Center:

Download RegObji.exe now

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

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Step-by-Step Procedure

Create a new Standard EXE project in Visual Basic. Form1 is created by default.
On the Project menu, add a new standard Module, Module1, to the project.
On the Project menu, click References, select Registration Manipulation Classes (RegObji.exe), and then click OK.

Add the following code to Module1:

Option Explicit

Dim readReg As Registry
Dim writeReg As Registry
Dim keyExists As Boolean
Dim I As Integer
Dim wKeys As RegKey
Dim rKeys As RegKey
Dim hiveR As RegKey
Dim hiveW As RegKey
Dim KeyToAdd As String
Dim KeyToFind As String

Public Sub main()

KeyToAdd = "Testing"
' The following key should be present on all systems.
KeyToFind = "Microsoft\Direct3D\Drivers\Direct3D HAL"
Set writeReg = New Registry
Set readReg = New Registry

Set readReg = New RegObj.Registry
Set writeReg = New RegObj.Registry

Set hiveR = readReg.RegKeyFromString("\HKEY_LOCAL_MACHINE\SOFTWARE\")
Set rKeys = hiveR.SubKeys(KeyToFind)
Set hiveW = writeReg.RegKeyFromString("\HKEY_LOCAL_MACHINE\SOFTWARE\")

For I = 1 To hiveR.SubKeys.Count
    If hiveR.SubKeys(I).Name = KeyToAdd Then
        keyExists = True
        Exit For
    End If
Next

' If the key already exists, do not modify it.
' This may be changed as needed.
If Not keyExists Then
    hiveW.SubKeys.Add (KeyToAdd)
    hiveW.SubKeys.Reset

    Set wKeys = hiveW.SubKeys(KeyToAdd)

    For I = 1 To rKeys.Values.Count
        wKeys.Values.Add rKeys.Values(I).Name, rKeys.Values(I).Value, _
           rKeys.Values(I).Type
    Next
End If
End Sub

On the Project menu, click Project1 Properties, and change the StartUp object to Sub Main.
Run the project.
To verify that a key named Testing is created under HKEY_LOCAL_MACHINE\SOFTWARE, run Regedit.exe. You may want to remove the Testing key when you are finished.