This should work:
Code:
/* Declare varibles */
char szSelection[1];
int nLetterNum;
char szNumber[][16] =
{
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "W", "V", "X", "Y", "Z"
};
Code:
/* If Button the upper button is pressed: */
nLetterNum++;
szSelection[0] = (szNumber[nLetterNum]);
SetWindowText(hNumberEdit, szSelection);
Code:
/* If Button the lower button is pressed: */
nLetterNum--;
szSelection[0] = (szNumber[nLetterNum]);
SetWindowText(hNumberEdit, szSelection);
This script asumes your EditBox's handle is hNumberEdit
I haven't tried this script out yet, I am just saying that this should work.