Any .dll Tutorials?

[Atomic_Sheep]

Of course you can write DLL that export simple functions.
Most of the WINAPI is done that way.
In your example from the beginning of this thread it seems you also managed to build a dll which only exported a simple function - so I am confused as to what you wrote here.

It never worked. It compiled but never spat out Hello World. So basically after reviewing a bunch of sources, I noticed that every .dll ever created in these examples had functions as part of a class. The hidden this pointer was from here:

http://www.learncpp.com/cpp-tutorial...-this-pointer/

But I hadn't read it in a while and now that I refreshed my memory, it doesn't seem to be of relevance in this case so my mistake.

But looks like I've managed to add the library without errors using the -L -l method. For some reason if I do something like:

LIBS += "C:/Users/MyUser/Docs/MyDLL.dll"

LIBS += "C:/Users/MyUser/Docs/MyDLL.dll"

To copy to clipboard, switch view to plain text mode 

The program exits with ".exe exited with code -1073741515" which basically says that the library wasn't found at least according to what I found on this forum.

But having added the library, I don't get a QDebug Hello World message as expected . Even though I can find the function in the hints box when I start typing the name of the function and it's at the start of main(){}.

What's more, if I add the HelloWorld() function in my .dll to namespace mynamespace and then call it in main of my program as mynamespace::HelloWorld(), I get an error:

error: undefined reference to `_imp___ZN14...' and that doesn't have many hits in google.