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Topic Discussed: Static, dynamic, implecit and explecit linking, imported and exported in a module, declspec(dllimport), declspec(dllexport), extern "C" , name mangled, AFX Extension class, AFX_EXT_CLASS.
1. What is DLL and what are their usages and advantages?
2. What are the
sections in a DLL executable/binary? 3. Explain the working
mechanism of a DLL?
4. Where should we store DLLs ? 5. Who loads and links the DLLs? 6. What is dependency
chain when using DLL? 7. How many types of linking are there? 8. What is the entry point function of a DLL? 9. What
is implicit and explicit linking in dynamic loading? 10. How
functions are imported and exported in a module? 11. How can I export a
function from a module? 12. What is
the utility of the keyword: __declspec(dllimport),
__declspec(dllexport)? 13. How can I export
a function without __declspec(dllexport) keyword? 14. Why the keyword
extern "C" is used for codes when used with a C++ compiler? 15. What is name mangling in
C++ function? 16. How a whole class can be
exported? 17. How can I call a function of
a DLL file? 18. When
ever we execute an EXE, one application instance is created for each
execution. Is it true for DLL also? How many instance of a DLL is created
if a DLL is loaded from 5 different applications? Explain. 19. How a
DLL comes to know that it has been loaded by one application as well as
unloaded by it? 20. How
Win32 sub-system informs the DLL when the application creates a
thread? 21. What are AFX
Extension class and Extension DLLs? 22. How classes are exported in
MFC DLL? 23. For
imports we use dllimport and for export we use dllexport keyword. MFC uses
only one keyword AFX_EXT_CLASS, how can that be possible? 24. How we use
dynamic linking in Linux? Give example. 25. What is
resource DLL? When and how we can use it? Similar topics related to this section
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