delphi message queue registing Window procedure AllocateHWnd

 delphi message queue registing Window procedure AllocateHWnd RegisterWindowMessage DeallocateHWnd

https://zarko-gajic.iz.hr/receive-windows-messages-in-your-custom-delphi-class-nonwindowed-control-object/

  Window procedure 

https://stackoverflow.com/questions/36079268/bringing-tcallbackthunk-to-64-bit-via-anonymous-function

http://computer-programming-forum.com/31-pascal/a8757a5d056efcad.htm

https://www.programmersought.net/article/334918782.html

https://edn.embarcadero.com/article/10323

 TWndMethod
 TWinControl.MainWndProc
 TWinControl.WndProc
 TControl.WndProc
 TObject.Dispatch
 TWinControl.DefaultHandler
 TControl.Perform
 TWinControl.Broadcast
 TWinControl.WMPaint
 TWinControl 

https://blog.actorsfit.com/a?ID=00200-873e72f4-0375-4905-a5ba-9f1d7cdb85b4

TranslateMessage
DispatchMessage
PostMessage
GetMessage
PeekMessage

https://stackoverflow.com/questions/50041183/properly-overriding-wndproc

https://docwiki.embarcadero.com/RADStudio/Sydney/en/The_WndProc_Method

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-registerwindowmessagea

https://docwiki.embarcadero.com/RADStudio/Sydney/en/Declaring_a_New_Message-handling_Method

TApplicationEvents RegisterWindowMessage  Message Event

https://www.codeproject.com/Articles/546/Message-Management#Registered%20Window%20Messages

https://edn.embarcadero.com/article/38447

https://stackoverflow.com/questions/52380172/sendmessage-fail-using-registerwindowmessage-api

Adventures in Delphi 6 Messaging

https://www.informit.com/articles/article.aspx?p=27217&seqNum=9