Chapter 19. DLL Basics
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Dynamic-link libraries (DLLs) have been the cornerstone of Microsoft Windows since the first version of the operating system. All the functions in the Windows application programming interface (API) are contained in DLLs. The three most important DLLs are Kernel32.dll, which contains functions for managing memory, processes, and threads; User32.dll, which contains functions for performing user-interface tasks such as window creation and message sending; and GDI32.dll, which contains functions for drawing graphical images and displaying text.
Windows also comes with several other DLLs that offer functions for performing more specialized tasks. For example, ...
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