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Database course experiment, ODBC programming control heterogeneous databases, a function with SQLConnection (), has appeared
error C2664: 'SQLConnectW': cannot convert parameter 2 from 'SQLCHAR *' to 'SQLWCHAR *'
Cast is useless, because the final is as follows:
When VS2005 in the development process, the default character set is Unicode. So if the string constants used in the program must be converted to Unicode display type, or a compile-time error
amend as below:
Project menu - Project Properties (the last one) - Configuration Properties - General - Item Default - character set will be changed to use the Unicode character set is not set.