C# Signature:

[DllImport("advapi32.dll", SetLastError=true)]
static extern int RegCloseKey(
    IntPtr hKey);

VB Signature:

Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As IntPtr) As Integer

User-Defined Types:

None.

Notes:

In my VB.Net project I used the Integer data type instead of IntPtr and I can confirm it works great. My alternative declaration is posted below:

    Public Declare Function RegCloseKey Lib "advapi32.dll" (ByVal hKey As Integer) _
    As Integer

Tips & Tricks:

Please add some!

Sample Code:

The following is VB.Net sample code:

    Dim hkeyKeytoOpen As Integer
    Dim ErrororResultValue1 As Integer = RegOpenKeyEx(inthKey, strlpSubKey, 0, KEY_ALL_ACCESS, hkeyKeytoOpen)

    RegSetValueEx(hkeyKeytoOpen, strlpValueName, 0, REG_SZ, strValueData, strValueData.Length)
    RegDeleteValue(hkeyKeytoOpen, strlpValueName)
    RegCloseKey(hkeyKeytoOpen)

Alternative Managed API:

Microsoft.Win32.RegistryKey.Close() Method.

(Special Note: The .NET Framework (3.0 and earlier at least) cannot read registry values of special types (for example: REG_RESOURCE_LIST and REG_FULL_RESOURCE_DESCRIPTOR). I am not sure if they will ever be available under .NET, to see examples of these types of values at work, visit your registry under (HKLM\HARDWARE\DESCRIPTION\System) and (HKLM\HARDWARE\RESOURCEMAP\Hardware Abstraction Layer\ACPI x86 platform).