Retrieving VFP runtime DLL name required by EXE or DLL
VFP stores in an EXE/DLL information about what runtime DLL is required to run it.
| This is sample code. Add error handling and adjust to your requirements as necessary. | 
Obtaining DLL-specific version information
Most Windows Shell and common controls DLLs implement DllGetVersion function. It allows applications to obtain DLL-specific version information to make sure that required functionality in a DLL is implemented. The Windows API support class
is used to handle Windows API structures.
Adler32 Checksum
Adler32 is different from CRC32. It's much faster but a little bit less reliable. The free ZLIB.DLL from http://www.zlib.net/ has a function to calculate Adler32.