I am reading "Inside ODBC" from Microsoft Press to learn how to perform SQL in my "C" application. I am writing the first "hello world" ODBC program. I only added the header file sql.h and compiled and I get several unknown type name errors ULONG, USHORT, PVOID, UCHAR, HWND, DWORD, WORD and BYTE. As a second test I added, sqlext.h and compiled and I get additional errors. How do I resolve these errors?
By including the proper header.
Read the docs, search the internet or ask in a win32 api support forum.
This one is not such and you're violating the rules of it!
Solution: Include windows.h before sql.h