dll headers to Delphi

 tlb COM Object  CoInitialize

 

http://www.drbob42.com/headconv/ 

https://www.freepascal.org/tools/h2pas.var

http://rvelthuis.de/articles/articles-convert.html#main

http://rvelthuis.de/articles/articles-cobjs.html

http://rvelthuis.de/programs/convertpack.html

https://github.com/neslib/Chet

https://www.drbob42.com/Delphi/headconv.htm

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

https://github.com/RRUZ/delphi-dev-shell-tools

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

 CreateComObject CreateOleObject ComObj.pas.
  if SaveInitProc <> nil then TProcedure(SaveInitProc);
  if (CoInitFlags <> -1) and Assigned(ComObj.CoInitializeEx) then
    NeedToUninitialize := Succeeded(ComObj.CoInitializeEx(nil, CoInitFlags));
    IsMultiThread := IsMultiThread or
      ((CoInitFlags and COINIT_APARTMENTTHREADED) <> 0) or
      (CoInitFlags = COINIT_MULTITHREADED); //this flag has value zero
    NeedToUninitialize := Succeeded(CoInitialize(nil));
Obviously he is used to call CoInitialize to initialize the com environment.
In the initialization section of ComObj.pas:
initialization
  LoadComExProcs;
  VarDispProc := @VarDispInvoke;
  DispCallByIDProc := @DispCallByID;
  SafeCallErrorProc := @SafeCallError;
  if not IsLibrary then
    SaveInitProc := InitProc;
   //point the InitProc pointer to the function InitProb
    InitProc := @InitComObj;
end; Come to the Forms.pas file, take a look at the TApplication.Initialize section:
procedure TApplication.Initialize;
  if InitProc <> nil then TProcedure(InitProc);

https://flylib.com/books/en/3.264.1.146/1/

Creating and Using COM Interfaces | C++Builder 5 ...

IDataBroker	Design time interface for remote data modules.
IDispatch	Interface used for providing Automation. (This is used in some of the following examples.)
IEnumVARIANT	Interface used for enumerating a collection of variant objects.
IFont	Interface to a COM font object, which is actually a wrapper around a Windows font object.
IPicture	Interface to a picture object, which is a language-neutral abstraction for bitmaps, icons, and metafiles, and its properties.
IProvider	Provider interface for TClientDataSet .
IStrings	Collection Interface for TStrings .
IUnknown	The base interface for all other interfaces. Introduces the QueryInterface() method, which is useful for discovering and using other interfaces implemented by the same object.

https://docs.microsoft.com/en-us/windows/win32/learnwin32/initializing-the-com-library

http://www.techvanguards.com/stepbystep/comdelphi/insideclient.asp

https://theroadtodelphi.com/category/com/

https://flylib.com/books/en/2.37.1/from_com_to_com_.html