property IsRegistryValueReadable.
Checks whether a full keyname is readable in the Registry.
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regFullKeyName
[in] .   Full keyname of the Registry
pVal
[out,
retval] The returned value 1 if readable, 0 otherwise
S_OK
The
operation was successfull.
E_POINTER
A NULL
pointer was supplied as an argument.
E_UNEXPECTED
An
unexpected error occoured.