Create two procedures: (1) SetColor receives two BYTE parameters: forecolor and
ID: 3536156 • Letter: C
Question
Create two procedures: (1) SetColor receives two BYTE parameters: forecolor and backcolor.It calls the SetTextColor procedure from the Irvine32 library. (2) WriteColorChar receives three byte parameters: char, forecolor, and backcolor. It displays a single character, using the color attributes specified in forecolor and backcolor. It calls the SetColor procedure, and it also calls WriteChar from the Irvine32 library. Both SetColor and WriteColorChar must contain declared parameters. Complete the missing part of the code for the two procedures.
Explanation / Answer
INCLUDE Irvine32.inc
; procedure prototypes:
SetColor PROTO forecolor:BYTE, backcolor:BYTE
WriteColorChar PROTO char:BYTE, forecolor:BYTE, backcolor:BYTE
.data
.code
main PROC
INVOKE WriteColorChar, 'A', green,red
INVOKE WriteColorChar, 'B', black,yellow
INVOKE WriteColorChar, 'C', gray,blue
INVOKE WriteColorChar, 'D', blue,white
call Crlf
exit
main ENDP
WriteColorChar PROC USES eax,
char:BYTE, forecolor:BYTE, backcolor:BYTE,
INVOKE SetColor, forecolor, backcolor
mov al,char
call WriteChar
ret
WriteColorChar ENDP
SetColor PROC, forecolor:BYTE, backcolor:BYTE
movzx eax,backcolor
shl eax,4
or al,forecolor
call SetTextColor ; from Irvine32.lib
ret
SetColor ENDP
END main