Thread: Application::DoEvents()

I have a piece of code that have Application:: DoEvents() and I have read on MSDN, but there's something that I still don't understand.
for example, here is my pseudocode:

Code:

void functionA()
{
   while(true)
  {
       //command A;
      //command B;
      Application::DoEvents();
  }
}
void Button_Click( System::Object^ sender, System::EventArgs^ e )
{
     //do something
}

So, when program run to command A or command B, if I click -->nothing.
when run to Application:oEvents(): if I click. Program will excute event Button Click. If I don't, program will loop again.

Does my explanation about Application:: DoEvents() true.

Please explain for me,please.
thanks