Passing counters in functions?

Hi,
I'll post my code here if someone wants to help. It's a bit simplified compared to the real code. I've borrowed some stuff from others on this forum. Thanks!

Code:

#include <windows.h>
#include <iostream>

using namespace std;


int MouseScroll(int roof) {
	
	HANDLE hStdin,hStdout;
	hStdin=GetStdHandle(STD_INPUT_HANDLE);
	hStdout=GetStdHandle(STD_OUTPUT_HANDLE);
	DWORD num;
	INPUT_RECORD inputrecord;
	COORD location;
	
	location.X=0;
	location.Y=0;
	
	int x_gammal = 0;
	int i = 0; //What to do with counter int?
	
	while (true) {
		
		ReadConsoleInput(hStdin,&inputrecord,1,&num); 
		
		if (inputrecord.EventType == MOUSE_EVENT) {
			
			SetConsoleCursorPosition(hStdout,location);
			int x_ny = inputrecord.Event.MouseEvent.dwMousePosition.X;
			
			if (x_gammal != x_ny) {
				
				if (x_gammal < x_ny) {
					
					if (i < roof) {
						i++; 
						cout << i << flush; }
					
					else {
						i = roof+1;
						cout << i << flush; }
				}
				
				else {
					
					if (i > 0) {
						i--; 
						cout << i << flush; }
					
					else {
						i = 0;
						cout << i << flush; }
				}
				
				x_gammal = x_ny;
			}
		}
	}
}



void MenuHandler(int choice) {
	
	int x_gammal = 0;
	
	int i = 0; 
	int menu_roof = 0;
	long menu[] = {0,0,0};
	
	//Menu choice 
		
	switch (choice) { //More cases will be added
		
	case 1: //Focus mode
		menu[0] = 2; 
		menu[1] = 6;
		menu[2] = 3; 
		
		menu_roof = 2;
		
		MouseScroll(menu_roof);
		
		//SetPropFocusMode(0, menu[i]);  //Used with other SDK
		break;	
	}
}
	


	int main() {
		
		int menu_value = 0;
		bool Continue = 1;
		
		
		//camera control
		//InitControl();
		//GetPropCameraCount();
		//Connect(0);
		
		while(Continue) {
			
			if (GetAsyncKeyState(VK_F1) < 0) {
				menu_value = 1;
				MenuHandler(menu_value);
			}
			
		}
		
		//DisConnect(0);
		return 0;
	}

Every time the function MouseScroll is called i is set to zero. This stops it from changing its value. I would like MouseScroll to remember what value i had previously.

If everything then works as I expect the following will happen:
when F1 is held down I would be able to move the mouse in the x-direction and increase or decrease i.

I made it work when I wrote the code in one piece but not when splitting it into different functions.

Thanks very much for any help!

/Kristian

Code:

int MouseScroll(int roof) {
	/* .... */
	static int i = 0;
        /* .... */
}

Thanks! Now it's working.