How to work with a DLL???

[LadyInRed7]

Hey guys, so I was checking out some gaming 2d libraries and I thought about learning to program in Allegro(by the way this is not about allegro).But somewhere in the line I read about 'Dlls' and I went into a thought.
I know what dll stands for,but I dont know how to make it in C++.
If anyone would show me a article about dll in this website I would be glad.
This are the thinks I wanna know:-
1) How to make a dll
2) How to take input from a dll
3) How to use a dll(general)
Im sorry if I offend you guys in anyway,but hey I wanna grow up the learning path.
Thnx for reading,
Yours friendly newbie,
LadyInRed7.

[coder777]

Take a look at this:

https://msdn.microsoft.com/en-us/library/1ez7dh12.aspx

[LadyInRed7]

Thnx pal I will take a look at it....
By the way do you know how to make a dll in CodeBlocks?
I mean what type of code you put inside a dll??
Thnx anyways (^_^).

[coder777]

By the way do you know how to make a dll in CodeBlocks?

Create a project with the type 'dynamic link library'

I mean what type of code you put inside a dll??

There's no limitation. Except that classes / structs are compiler dependant while c functions are not.