Register Com Object - follow up from http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20147812

Here is how I register these things to the system.

ShellExecute(Handle, 'OPEN', PChar('REGSVR32.exe') , PChar(TheFile), '', sw_normal);

Now I know of three possible messages...there may be more...that will return in a message box and I have not figured out quite how to trap for these messages and then us ones that I have designed. But this does work or at least it has for me. :>)


The Crazy One

You can't register a COM exe with regsvr32. Use something like this:

ShellExecute(Handle, 'open', 'Project1 /regserver' , '', '', sw_hide);

Oh Ok. Sorry I did not know that. :>)

rllibby has posted a comment about this in the old question (https://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=delphi&qid=20147812) - dated 07/13/2001 11:58AM PST .

Could i have your comment on this, please.

Thanks
Peter

Peter > once again. Search Microsoft's web site to find what registry entries must be done to register COM server, registering COM/DCOM servers is nothing more than changeing registry.
Epsylon & CrazyOne > use tregsvr.exe instead regsvr32.exe
easier to use and runs only in commandtext mode which means no dialog boxes.
ziolko.

Peter, what should I comment on that? It's a fact.

Ziolko, we are talking about an exe here. It has no exported functions (entry points) like a dll. That's why it has the /regserver and /unregserver parameter switches. The only way to register an exe is by running it. To do that silently use the /regserver switch.

Epsylon > if you want register COM/DCOM server by changeing registry entries it makes no difference if it is DLL or EXE same thing for tregsvr, even more with tregsvr You can register COM/DCOM object with only .TLB file (simlpe add -t switch)
ziolko.

Ziolko, tregsvr registers a COM-exe using CreateProcess. So it executes it using the /regserver parameter switch.

Epsylon > I didn't look in source code.

Hi Peter

Hang on here!
The thing is - as you allready know - that you have to register your COM object with Windows for other programs to be able "to see" and use the object.

There are a lot of diferent ways to register your COM object. But it all comes down to some entries added to the registry. Delphi has some helper rutines to do this for you. DllRegisterServer and DllUnregeisterServer.

At the end I have posted the source from at project that will actually help you carry out some of the suggestions in this thread. Notice that it is not possible to register your COM object by using LoadLibrary as suggested in the thread you reffered to. It is possible to add this to your project source
    program Project1;
    uses ComServ;
    exports
      DllGetClassObject,
      DllCanUnloadNow,
      DllRegisterServer,
      DllUnregisterServer;
    ... (rest of the source)
and call DllRegisterServer by LoadLibrary and GetProcAddress. However things are not initialized right so you will get an access violation.

Well back to problem in hand! During installation of your program (or just the COM object) you must call "project1.exe /regserver" using ShellExecute or what ever suits you best (might even be from within you installation program).

You could add the registry entries manually. Open the registry (regedit.exe - like you didn't know that :o) and navigate down to "HKEY_CLASSES_ROOT\CLSID\{CLASS ID OF YOUR COM}" and be inspired!

So now there's only one thing left. The source!

Good luck

Martin

program Project1;

uses
  ComServ, // Add this...
  Dialogs,
  Forms,
  COMObj,
  Unit1 in 'Unit1.pas' {Form1},
  Project1_TLB in 'Project1_TLB.pas',
  Unit2 in 'Unit2.pas' {COMTest: CoClass};

{$R *.TLB}
{$R *.res}

begin
// ...not forgetting this...
  if ParamStr(1) = '/regserver' then begin
    DllRegisterServer;
    Exit;
  end;
  if ParamStr(1) = '/unregserver' then begin
    DllUnregisterServer;
    Exit;
  end;
// ...and now you're done!



  Application.Initialize;
  Application.CreateForm(TForm1, Form1);
  Application.Run;
end.

Ten13, what the .... are you doing ??????????????????

READ THE QUESTION AND COMMENTS!!!!!!!!!!!!

Peter?

Dead and not kicking :-(((
ziolko.

I'm out of office for vacation and will not return until the beginning of august. I have not read your comments  before now. For that i apologize.

I dont think Ten13 proposed answer help me much.
I my com-exe had the function 'DllRegisterServer' i would use 'LoadLibrary' etc.

The '/regserver' switch - is that a silent switch or do i have to capture it similar to what Ten13 propose ??

Regards
Peter

> The '/regserver' switch - is that a silent switch

That is correct.