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I'm writing a very long registry Key name (it's a list of programs for a combined uninstall) and I think it's too big.
What's the max size the key can be (in characters) ? (The smallest maximum among Win xp, vista, 7 since it'll need to work on all of them)
891
By default, the registry size limit is 25 percent of the paged pool. (The default size of the paged pool is 32 MB, so this is 8 MB.)
In the Windows 98, CE, NT, and 2000 operating systems, a registry key is an organizational unit in the Windows registry, an internal database the computer uses to store configuration information.
REG_SZ. A null-terminated string. This will be either a Unicode or an ANSI string, depending on whether you use the Unicode or ANSI functions.
Registry values are name/data pairs stored within keys. Registry values are referenced separately from registry keys. Each registry value stored in a registry key has a unique name whose letter case is not significant.
Key Name: 255 characters
Value name: 16,383 characters
Value: Available memory (latest format)
or 1 MB (standard format)
http://msdn.microsoft.com/en-us/library/windows/desktop/ms724872%28v=vs.85%29.aspx
170
According to this support article, it is 255 characters.
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