hab (HAB) - input
idCodepage (ULONG) - input
If idCodepage is set to 0, the current code page of the caller is used.
idCountryCode (ULONG) - input
If idCountryCode is set to 0, the country information for the default system country code is used.
pszString1 (PSZ) - input
pszString2 (PSZ) - input
ulReserved (ULONG) - input
ulResult (ULONG) - returns
WCS_EQ