readcomm.~dpr

编写最简单的DLL

library readcomm;
uses
  SysUtils,Inifiles,Classes;
{$R *.res}
var inifile:Tinifile;
function GetValue(Num:integer): integer; stdcall;
begin
   If Num=1 then  GetValue :=inifile.ReadInteger('com1','value',0);
   If Num=2 then  GetValue :=inifile.ReadInteger('com2','value',0);
end;

function GetStatus(Num:integer): integer; stdcall;
begin
   If Num=1 then GetStatus:=inifile.ReadInteger('com1','status',0);
   If Num=2 then GetStatus:=inifile.ReadInteger('com2','status',0);
end;

function SetCut1(Cut:integer): integer; stdcall;
begin
   inifile.WriteInteger('com1','inew',cut);
   inifile.UpdateFile;
   SetCut1:=cut;
end;

function SetCut2(Cut:integer): integer; stdcall;
begin
   inifile.WriteInteger('com2','inew',cut);
   inifile.UpdateFile;
   SetCut2:=cut;
end;

exports
   GetValue,
   GetStatus,
   SetCut1,
   SetCut2;
begin
   inifile:=Tinifile.Create('inicomm.ini');
end.