DLL动态调用函 //获取dll 文件路径

//公用单元函数
function dllform(dllname, funcname: string): DWORD;
// DLL动态调用函
//获取dll 文件路径
var
  myinifile: Tinifile;
  DllHandle: THandle;
  Dllform: TCallBaseForm;
begin
  DllHandle := LoadLibrary(PChar(CurWorkDLLPath +'\'+ dllname + '.dll'));
  if DllHandle <> 0 then
  begin
    Dllform := GetProcAddress(DllHandle, PChar(funcname)); //窗体函数
    if Assigned(Dllform) then
    begin
      Dllform(Application, Screen);   //调用dll主窗
    end
    else
      Application.MessageBox('程序文件调用错误,请联系系统管理员!', '错误', MB_OK + MB_ICONSTOP);
  end
  else
  begin
    MessageBox(0, Pchar('没有找到' + dllname + '.dll程序文件,请联系系统管理员'), '错误:加载DLL失败', MB_OK + MB_ICONSTOP);   //判断dll文件是否存在
    Exit;
  end;
end;

//DLL
function CreateFrmLRPT01(App: TApplication; Scr: TScreen):TForm;
begin
  Application := App;
  Screen := Scr;
  Application.CreateForm(TfrmLRPT01, frmLRPT01);
  result:=frmLRPT01;
end;

exports
  CreateFrmLRPT01;

//main调用函数
dllform('LRPT01','CreateFrmLRPT01');