C / C++ / MFC

Aryan S wrote:

I want my exe should run in the machine only if a windows service is already installed in the machine. How to detect whether the service is installed?

this->ShowWindow(SW_SHOWMAXIMIZED);

procedure TForm1.Button1Click(Sender: TObject);
 var
   Nada : integer;
 begin
   Nada:=0;
   {DesHabilitar ALT-TAB}
   {Disable ALT-TAB}
   SystemParametersInfo( SPI_SETFASTTASKSWITCH, 1, @Nada, 0);
 end;

class Base
{
public:
  virtual void Behavior();
};
class derA : public Base
{
public:
  virtual void Behavior();
};
class derB : public Base
{
};
void SomeFunction( Base* base ){
   base->Behavior();
}
//
derA A;
derB B;
SomeFunction(&A); // calls derA::Behavior();
SomeFunction(&B); // calls Base::Behavior(), 
                  // since derB doesn't implement it

derA* einA = dynamic_cast<derA>(base);
derB* einB = dynamic_cast<derB>(base);
if(einA) {
} else if(einB) {
} else {
  // verdammt!!
}