1. Understanding DLLs
and headers, and libs…
Jeff Chastine

2. Dynamic Link Libraries
Real world: No longer building from scratch!
DLLs – Dynamic Link Libraries
Just a compiled set of functions
Reusable
Look in system32!
Header file(s)
Lib file(s)
Jeff Chastine

3. HEADER FILES A description of available functions
No implementation (in DLL)
Use #include
“” search locally
< > search elsewhere
Jeff Chastine

4. LIB Files It’s a mystery! Relates the header file to the DLL
Binary file
Tells where in the DLL the functions are!
#include Header File
LIB File
DLL
function1
function2
Needs
function3
function75
function76
function77
Jeff Chastine

5. Now That you Understand
You’ll have to configure your environment (VS 2010)
Tell it:
Where the header files are
Where the lib files are
Which lib files to use
Make sure the .exe can find the DLL!
Jeff Chastine