An article on how to write an Edit control used for HEX and DEC number input.

code segment assume cs:code sum_p proc near jcxz exit add ax,cx dec cx call sum_p exit: ret sum_p endp start: mov ax,2000h mov ds,ax mov ax,0 mov si,0 mov cx,7 call sum_p mov [si],ax mov ah,4ch int 21h

Recently, I was working on a diagnostic software which requires a Edit Control used for HEX/DEC numbers input. The CEdit that comes with MFC is not so good for this job, as it can not prevent the user from typing an invalid HEX number. Therefore

User build MFC Class for view and edit data in Hex, Dec, Bin, Oct, Ascii formats etc :)