The setting for tabbed chats in WLM 2011 is stored in the registry at
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\PerPassportSettings\USERID
under the binary registry value
ShowConvWndTabs. This REG_BINARY value consists of 4 bytes representing a little-endian 32-bit integer which equals 1 (01 00 00 00) when tabbed chats are enabled or 0 (00 00 00 00) when they are disabled. Actually, this format is identical to REG_DWORD which defaults to little-endian.
Normally, you should only have to read the value and check whether it's non-zero to determine the state.
As for reading a REG_BINARY from the registry, you'll probably want to use some registry functions for that. Screenshot Sender 5 comes with a nifty set of registry functionalities which support REG_BINARY. Feel free to use that script file but please credit the original authors in a comment block at the top of the file.
However, the Screenshot Sender implementation reads binary values as strings where each two bytes represents a Unicode character (as it's mainly used for string data in the script). If you're planning to use this, you'll either need to modify Registry_GetKeyValue to read the value as a number or convert the string data to a number first after calling Registry_GetKeyValue. That's up to you.
quote:
Originally posted by matty
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger\PerPassportSettings\%Messenger.MyUserId%\DisableTabs
0: Enabled
1: Disabled
That registry value doesn't seem to reflect the tabbed chats setting... I think it's some kind of leftover from previous versions for the tabs in the contact list.
ShowConvWndTabs does reflect the correct setting though.
/ 
