uses
DdeMan;
procedure mIRCDDE(Service, Topic, Cmd: string);
var
DDE: TDDEClientConv;
begin
try
DDE := TDDEClientConv.Create(nil);
DDE.SetLink(Service, Topic);
DDE.OpenLink;
DDE.PokeData(Topic, PChar(Cmd));
finally
DDE.Free;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
mIRCDDE('mIRC', 'COMMAND', '/say Hallo von SwissDelphiCenter.ch');
end;