How to use an interface and a function that is present in a .dll
hi, i am new to qt. i m developing a tool for controlling a CCD. i have the drivers required and i have tried to include the .dll file in my program using QLibrary but i have no idea how to include the required interfaces and the corresponding functions in my program. i have no idea how to include it during the compiletime but since there is no particular header file.
thanks in advance.
there is no general answer to that. First you have to think of the interface. is it:
pure C interface (only eC exported functions) in the dll
C++ interface (exported classes from the dll)
This has much influence on how to use it.
If it's a C-interface, you can use late binding: Use "QLibrary":http://doc.qt.nokia.com/latest/qlibrary.html to load the library and "QLibrary::resolve":http://doc.qt.nokia.com/latest/qlibrary.html#resolve to get the function pointers. If you don't know how to use function pointers, you could look "here":http://www.cprogramming.com/tutorial/function-pointers.html or use google :-)
If it's a C++ library you need the header files and an import library (on windows MSVS it would be a .lib file, for gcc a .a file). Without header and import lib file, I see no chance to use a C++ dll :-(