Good resources on User32.dll windows messaging

Here are a number of good resources I found went I was researching the solution that allowed me to Inject a .NET REPL into an Unmanaged/C++ Application


SetParent

• Create window as child in third party application 
• Embedding HWND into external process using SetParent
• SetParent (MSDN)

pinvoke.net (which is a great resource with tons of DllImport C# declarations)

• SetParent (user32) 
• SendMessage (user32)
• CreateWindow (user32) 
• CreateWindowEx (user32) 
• SetWindowText (user32) 
• GetWindowText (user32) 
• ShowWindowCommand (Enums) 
• EnumChildWindows (user32) 
• CloseWindow (user32) 
• GetProcAddress (kernel32) 

Windows related

• How can I get the child windows of a window given its HWND? 
• Why is EnumChildWindows skipping children?
• C# how to use WM_GETTEXT / GetWindowText API 
• CreateWindow function 
• CreateWindowEx function (Windows) 
• How to Add Tree-View Items (Windows) 
• Enumerating Windows 
• Control.DefWndProc Method and Control.WndProc Method (MSDN)
• List of Windows Messages

CodeProject articles

• Trapping windows messages 
• A Revolutionary New Approach to Custom Drawn Menus 
• A template singleton class for easy implementation of Windows hooks 
• InterSpy - An integrated Windows message trace and filter utility 
• Manipulating Windows using messages and simple CBT hooking 
• Windows Message Handling - Part 1 , Part 2 , Part 3 , Part 4 
• Spying Window Messages from the Inside 
• Using Window Messages to Implement Global System Hooks in C# 
• How to make a Message Only Window 

Other 

• http://www.dotnetinterop.com/faq.aspx and http://www.dotnetinterop.com/samples.aspx
• Managed Windows API  (somebody should move this to GitHub)
• Windows® API Code Pack for Microsoft® .NET Framework 
• CommonWin32 

Managed Spy++

• Managed version of Spy++ Tool? 
• Deliver The Power Of Spy++ To Windows Forms With Our New Tool (MSDN)