Problem in Understanding the Libraries like user32.dll etc.

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Dear Friends.

I have seen many VB.Net source codes, that there are so many libraries (for example user32.dll) are used there.
For example

Private Declare Function CallNextHookEx Lib "user32"............

But I can't understand that why these libraries are used. And What functions are there in each library. And Where can I find the detail of these libraries and the use of their functions. Is there any site or Documentation related to them exists? If exists then where? Plz guide me.

Plz Help me in this problem.
Waiting for a satisfactory response.

Posted 18-Sep-10 23:42pm

rashidfarooq

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#realJSOP · Answer 1 · 2010-09-19T01:18:00

Solution 1

You use these kinds of libraries when you need to do something "closer to the metal" than .Net allows. There are too many examples to give you a comprehensive list. In eight out of ten apps that you write, you probably won't need to use the Windows API directly.

Posted 19-Sep-10 1:18am

#realJSOP

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rashidfarooq 19-Sep-10 7:25am

But Now I need to use the lib user32.dll in one of my application. So, can you plz provide me the link of the list in which i can find the detail of these libraries.

LloydA111 · Answer 2 · 2010-09-19T01:33:00

Solution 2

User32.DLL is one of the core libraries of Windows itself, along with things like Kernel32.DLL.

Have a read here: http://en.wikipedia.org/wiki/Windows_API[^]

After that, look for info at MSDN

Posted 19-Sep-10 1:33am

LloydA111