C / C++ / MFC

#ifndef NEWSTRING_H_INCLUDED
#define NEWSTRING_H_INCLUDED

struct Newlist
{
    char data;
    Newlist *next;
};

class listClass
{
    public:
        listClass();
        ~listClass();
        void insert(char);
        void display();
        int length();
        void concatenate(listClass);
        void concatenate(char);
        bool substring(Newlist);
    private:
        Newlist *head;
        Newlist *current;
};

#endif // NEWSTRING_H_INCLUDED




#include <iostream>
#include "Newstring.h"

using namespace std;

listClass::listClass()
{
    head = NULL;
}

listClass::~listClass()
{
	if(head != NULL)
	{
		do
		{

			Newlist *nodePtr = head;

			head = head->next;
			delete nodePtr;
		} while(head!=NULL);
	}
}

void listClass::insert(char value)
{
	 Newlist *insert, *temp;

     insert = new Newlist;

     insert->data = value;

     insert->next = NULL;

     if(head == NULL)
       {
           head = insert;
           current = head;
       }
     else
       {
           temp = head;

           while(temp->next != NULL)
           {
               temp = temp->next;
           }
           temp->next = insert;
       }
}


void listClass::display()
{
    Newlist *displayPtr;

    displayPtr = head;

    while(displayPtr != 0)
    {
        cout << displayPtr->data << endl;
        displayPtr = displayPtr->next;
    }
}

int listClass::length()
{
    Newlist *countPtr;

    int count = 0;

    countPtr = head;

    while(countPtr != NULL)
    {
        count++;
        countPtr = countPtr->next;
    }

    return count;
}

void listClass::concatenate(listClass newlist)
{
    insert(newlist);
}




#include <iostream>
#include "Newstring.h"

using namespace std;

int main()
{
    listClass list;
    listClass newlist;


    list.insert('a');
    list.insert('b');
    list.insert('c');

    list.display();

    cout << list.length() << endl;;

    newlist.insert('d');
    newlist.insert('e');
    newlist.insert('f');

    list.concatenate(newlist);

    list.display();

    return 0;
}</iostream></iostream>

//Inside the Globalhook.dll

extern "C"
__declspec(dllexport) void InstallHotkeyHook()
{ 
	
	hHotkeyHook = SetWindowsHookEx(WH_KEYBOARD, HotkeyMessageProc, hMod, 0); // hMod is taken from dllmain.

}