virtual key codes

[poonninja]

is there different key codes for vista. i have a program that i need to be able to push the up button bit it doesnt work i have tryed some different things.

#define VK_UP 0x26 
void handleKeypress(unsigned char key, int x, int y) {
	switch (key) {
           case VK_UP:
	      exit(0);
	   break;
}
}

#define VK_UP 38 
void handleKeypress(unsigned char key, int x, int y) {
	switch (key) {
           case VK_UP:
	      exit(0);
	   break;
}
}

im so desperate i even tried just putting in random number. i have been searching google for the past hour. im starting to get frustrated. especially because the escape virtual key works. i dont know why up isnt working.