hiding the cursor

This is a discussion on hiding the cursor within the C++ Programming forums, part of the General Programming Boards category; How do you hide the cursor in C using dos...

  1. #1
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    hiding the cursor

    How do you hide the cursor in C using dos

  2. #2
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    One method is to make a few inline ASM calls. You'll just have to port these to the appropriate compiler:

    Deactivate cursor:
    mov cx,1900h
    xor bh,bh
    mov ah,1
    int 10h

    Activate cursor:
    mov cx,607h
    xor bh,bh
    mov ah,1
    int 10h

    There are probably other methods, but this is the one that i'm familiar with. the common directive is _asm ... . just consult the FAQ section.

    Peter Kimberley
    peter_kimberley@hotmail.com

  3. #3
    Normal vector Carlos's Avatar
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    Through direct VGA-port programming (not using BIOS)
    ---------------
    // hiding cursor
    push ax
    push dx
    mov dx,03d4h ;/*CRTC*/
    mov al,0ah ;/*cursor-start VGA reg*/
    out dx,al
    inc dx
    in al,dx
    or al,0010000b ;/*cursor off*/
    out dx,al
    pop dx
    pop ax
    --------------
    // show it again
    push ax
    push dx
    mov dx,003d4h ;/*CRTC*/
    mov al,0ah ;/*cursor-start VGA reg*/
    out dx,al
    inc dx
    in al,dx
    and al,11011111b ;/*cursor on*/
    out dx,al
    pop dx
    pop ax

    Assembly rules!!!!
    Have fun & enjoy!

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