Windows registry utilities

getRegistryValue - get a value from Windows registry (winqueryreg wrapper) setRegistryValue - set a value in the registry (new or updated)

Contains two utility functions to access the Windows registry:

1) getRegistryValue - Get a registry value. Sample usage:

value = getRegistryValue('HKEY_LOCAL_MACHINE', 'Software\Classes\.zip', 'Content Type')
value = getRegistryValue('HKEY_LOCAL_MACHINE\Software\Classes\.zip', 'Content Type')
value = getRegistryValue('HKEY_LOCAL_MACHINE\Software\Classes\.zip', '')

If the 2nd output argument (errorMsg) is requested, then registry query errors do not raise an error, but rather return an empty value and the error message. For example:

[value, errorMsg] = getRegistryValue('HKEY_CURRENT_USER', 'No-such-key', '')

If no specific value key is specified, the entire key-group is returned in a struct format. For example:

>> values = getRegistryValue('HKEY_CURRENT_USER\Software\MyProgram')
values = 
  struct with fields:

    FileTime: 738833.4883
    Filename: 'C:\MyProgram\abcd.dat'

2) setRegistryValue - Set a registry value. Sample usage:

[status, msg] = setRegistryValue('HKEY_CURRENT_USER', 'Software\MyProgram', 'DataFolder', 'C:\Data')
[status, msg] = setRegistryValue('HKEY_CURRENT_USER\Software\MyProgram', 'DataFolder', 'C:\Data')