C / C++ / MFC

typedef BOOL (*PFN_MAG_INITIALIZE)(void);

PFN_MAG_INITIALIZE MagInitialize = NULL;

if (osVersion >= "VISTA")   // Consider this as pseudo-code
{
    HMODULE hmod = LoadLibrary(_T("Magnification.dll"));

    MagInitialize = GetProcAddress(hmod, "MagInitialize");
}

if (MagInitialize)
{
    MagInitalize();
}

thanh_bkhn wrote:

But we know this library doesn't exist in windows XP.
How can I ignore this library when opening the application in windows XP?

nonness wrote:

Can someone help me ?

#include "stdafx.h"

using namespace System;
using namespace System::IO::Ports;

int main(array<System::String ^> ^args)
{
	
	String^ answer;
	String^ portName;
	int baudRate=9600;
	Console::WriteLine("Type in a port name and hit ENTER");
	portName=Console::ReadLine();
	// arduino settings
	SerialPort^ arduino;
	arduino = gcnew SerialPort(portName, baudRate);
	// open port
	try
	{
		arduino->Open();

		do
		{
			// ask on or off
			Console::WriteLine("Type \"on\" to turn the light on or \"off\" to turn it off");
			// get answer
			answer=Console::ReadLine();
			//check that user typed one of the options
			if(String::Compare(answer,"on")==0)
				arduino->WriteLine("1"); // send 1 to arduino
			else if(String::Compare(answer,"off")==0)
				arduino->WriteLine("0"); // send 0 to arduino
			else
				Console::WriteLine(answer+" was not an option");
			// ask user if he wants to continue
			Console::WriteLine("Try again? yes/no");
			// get answer
			answer=Console::ReadLine();
			// clear the screen
			Console::Clear();
		}while(String::Compare(answer,"yes")==0);
		// close port to arduino
		arduino->Close();
	}
	catch (IO::IOException^ e  ) 
	{ 
		Console::WriteLine(e->GetType()->Name+": Port is not ready");
	}
	catch (ArgumentException^ e)
	{
		Console::WriteLine(e->GetType()->Name+": incorrect port name syntax, must start with COM/com");
	}
	// end program
	Console::Write("Press enter to close the program");
	Console::Read();
    return 0;
}

int ledPin = 13;
int state=0;
void setup() {
    pinMode(ledPin, OUTPUT); // pin will be used to for output
    Serial.begin(9600); // same as in your c++ script
}

void loop() {
  if (Serial.available() > 0)
  {
    state = Serial.read(); // used to read incoming data
    
    switch(state)// see what was sent to the board
    {
      case '1': // if the the one was sent
        digitalWrite(ledPin,HIGH);
      break;
      case '0': // if 0 was sent
        digitalWrite(ledPin,LOW);
      break;
      default:
      break; 
    }
  }
}

#include "stdafx.h"

using namespace System;
using namespace System::IO::Ports;
int main()

{
	String^ answer;
	String^ portName;
	int baudRate=9600;
	Console::WriteLine("Type in a port name and hit ENTER");
	portName=Console::ReadLine();
	// arduino settings
	SerialPort^ arduino;
	arduino = gcnew SerialPort(portName, baudRate);
try
	{
		arduino->Open();

		do
		{
			// ask on or off
			Console::WriteLine("Type \"on\" to turn the light on or \"off\" to turn it off");
			// get answer
			answer=Console::ReadLine();
			//check that user typed one of the options

			if (((350<=x)&&(x<=550))&&((200<=y)&&(y<=300)) )
			{
			cout << "Left" ;
			arduino->WriteLine("76");

			cout << "\n" ;
			}
			if (((100<=x)&&(x<=250))&&((200<=y)&&(y<=300))){
				cout << "Right" ;
				arduino->WriteLine("82");
			cout << "\n" ;
			}if (((300<=x)&&(x<=350))&&((300<=y)&&(y<=400))){
				cout << "Back";
			arduino->WriteLine("66");
			cout << "\n" ;
			}
			if (((300<=x)&&(x<=350))&&((80<=y)&&(y<=200))){
				cout << "Froward" ;
			arduino->WriteLine("70");
			cout << "\n" ;
			}
		Console::WriteLine("Try again? yes/no");
			// get answer
			answer=Console::ReadLine();
			// clear the screen
			Console::Clear();
			
			}while(String::Compare(answer,"yes")==0);
		// close port to arduino
		arduino->Close();
	}
	catch (IO::IOException^ e  ) 
	{ 
		Console::WriteLine(e->GetType()->Name+": Port is not ready");
	}
	catch (ArgumentException^ e)
	{
		Console::WriteLine(e->GetType()->Name+": incorrect port name syntax, must start with COM/com");
	}
	// end program
	Console::Write("Press enter to close the program");
	Console::Read();
  
}