how can you use delphi to create a dll that can be used with mirc and how do you setup mirc to use these?

For an example I'm just going to show you how to create the dll and make it report the dll version to mirc.

First off you create a dll as per normal then you can start by adding a function.

The function is setup as below because of the method required for mirc.

function versionreply( mWnd: hWnd; aWnd: hWnd; Data: PChar; Parms: PChar;
Show: Boolean; NoPause: Boolean ): Integer; export; stdcall;

var blah,blah2:pansichar;

begin

  blah2 := pchar(GetProgramVersion('zirc.dll'));
  // above line well get the version of zirc.dll which is What I decided to
  // call the current dll.

  blah := pchar('7[14 Zirc.DLL version ' + blah2 + ' 7][14 by Zoomer 7]');
  // above line is basic layouf and design of teh output.

  strcopy(data, blah );

  Result := 3;  // when result = 3 it will send back the content of data.

end;


Then in teh exports you put the function you have created and then compile.
eg.

exports
versionreply;


You should now have a dll that you can place in the mirc directory, once you have done this open up mirc and click the green icon with /a writen on it or goto the action screen.
in this section you are going to need to make an action to access the dll it will looke like this;

mydllversion {

  say $dll(zirc.dll,versionreply,_)

}

Then on one of the irc channels when connected if you type

/mydllversion

Now you should have on the screen what you want. (ie. the version reply message)

you can also send vars to to the dll using the $dll (in mirc) but changing the _ for what you want to send, in the function you then use Parms as the value of the sent var.