A library intended to contain all P/Invoke method signatures for popular operating systems. Think of it as http://pinvoke.net, but proven to compile and work properly, and often with sample usage in the form of unit tests.

Install the NuGet package(s) for the DLLs you want to P/Invoke into. For example, if you want to P/Invoke into Win32's BCrypt.dll, install this package:

Install-Package PInvoke.BCrypt

Then import the following namespaces, as demonstrated below (if using C# 6):

using PInvoke;
using static PInvoke.BCrypt; // Supported in C# 6 (VS2015) and later.

This will allow you to conveniently call these methods directly by method name:

var error = BCryptOpenAlgorithm(AlgorithmIdentifiers.BCRYPT_SHA256_ALGORITHM); // C# 6 syntax
var error = BCrypt.BCryptOpenAlgorithm(BCrypt.AlgorithmIdentifiers.BCRYPT_SHA256_ALGORITHM); // C# 5 syntax

Provide a slightly higher than lowest level API for P/Invoke signatures. For example, instead of IntPtr parameters and uint flags, you'll see SafeHandle-derived types as parameters and flags enum types. API documentation will be provided via XML doc comments for easy reading with Intellisense, along with links to the describing pages on MSDN or elsewhere as applicable.

This is a portable library so you can use it anywhere.

This library should be available on NuGet for easy consumption by your projects. You may also copy and paste the P/Invoke signatures you need directly into your projects if desired.

Packages:

Library	Package name	NuGet	Description
advapi32.dll	PInvoke.AdvApi32		Windows Advanced Services
bcrypt.dll	PInvoke.BCrypt		Windows Cryptography API: Next Generation
gdi32.dll	PInvoke.Gdi32		Windows Graphics Device Interface
hid.dll	PInvoke.Hid		Windows Human Interface Devices
kernel32.dll	PInvoke.Kernel32		Windows Kernel API
ncrypt.dll	PInvoke.NCrypt		Windows Cryptography API: Next Generation
setupapi.dll	PInvoke.SetupApi		Windows setup API
user32.dll	PInvoke.User32		Windows User Interface

Check out the P/Invoke coverage we have for each library.

Please consider contributing more P/Invoke method signatures to this project. Once you contribute, you can immediately consume your additions without waiting for another public release of the library.