c++ cli - c++/cli Multithreading Socket and form -

could point me in right direction this, seem loop around web in vain...

private: system::void loginbutton_click(system::object^  sender, system::eventargs^  e) {              mlogin* lgn;              string text = marshal_as<string>(subjectname->text);               if (lgn->login(&text) == "master")              {                  delete this;                  msockserv server;                  vmaster master;                  thread^ newthread = gcnew thread(gcnew threadstart(master, &vmaster::showdialog));                  newthread->start();                   //master.showdialog();                  server.sockinit();              }              else if (lgn->login(&text) == "slave")              {                  delete this;                  vslave slave;                  msockclnt client;                  thread^ newthread = gcnew thread(gcnew threadstart(client, &msockclnt::sockinit));                  newthread->start();                  //client.sockinit(text);                  slave.showdialog();              }              else if (lgn->login(&text) == "no")              {                 messagebox::show("not valid username or password");              }          } 

i want start new form in new thread run concurrently socket server or client start in new thread. can't seem start neither socket nor form, errors:

error 1 error c3352: 'showdialog' : specified function not match delegate type 'void (void)'

error 2 error c3352: 'void msockclnt::sockinit(std::string)' : specified function not match delegate type 'void (void)'

although made sure sockinit of type void...

thank you.