PowerShell
There are two ways to query the default value in
PowerShell:
PS C:\> (get-itemProperty hkcu:\AppEvents\EventLabels\Open)."(default)"
PS C:\> (get-item hkcu:\AppEvents\EventLabels\Open).getValue('')
Similarly, the default value can be assigned PowerShell with
PS C:\> set-item hkcu:\AppEvents\EventLabels\Open -value '…'
A key's default value can be deleted as shown below. The key (subkey named
''
) must be opened writable by setting the second parameter to
$true
:
(get-item 'hkcu:\Software\tq84').OpenSubKey('', $true).DeleteValue('')