I do not have text widgets as such for Dex4u, but code them as needed.
Example of simple text menu

;====================================================;
; DrawFile.                                          ;
;====================================================;
DrawFile:
        pushad
        push  es
        mov   ax,8h
        mov   es,ax
        mov   [WinY],4
        cld
 ;----------------------------------------------------;
 ; Draw File Window.                                  ;
 ;----------------------------------------------------;
draw_f:
        mov   esi,WinFile+3
        xor   ecx,ecx
        mov   cl,[WinFile+1]
        xor   ebx,ebx
        mov   bx,12
loopf2:
        mov   edi,0xb8000
        add   edi,[Ytable+ebx+4]
        add   bx,4
        add   edi,4
        push  ecx
        xor   ecx,ecx
        mov   al,[WinFile+2]
        mov   cl,[WinFile]
loopf1:
        movsb
        stosb
        loop  loopf1
        pop   ecx
        loop  loopf2
 ;----------------------------------------------------;
 ; Mark Selection.                                    ;
 ;----------------------------------------------------;
        mov   bx,[WinY]
        shl   bx,2 
        mov   edi,0xb8000
        add   edi,[Ytable+ebx+4]
        add   edi,7
        xor   cx,cx
        mov   cl,[WinFile]
        sub   cl,2
        mov   al,reverse3
rev_f:
        mov   [es:edi],al
        add   edi,2
        loop  rev_f
get_f:
        call  GetKey
;some more code here
      pop   es
      popad
      ret

Some data for the above code:

WinFile      db 15,8,color2
             db 'ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿'
             db '³ Load        ³'
             db '³ Save        ³'
             db '³ Save As     ³'
             db '³ New         ³'
             db '³ OS Shell    ³'
             db '³ Exit        ³'
             db 'ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÙ'


Ytable              dd 0, 160, 320, 480, 640, 800, 960,1120,1280,1440,1600,1760,1920
                    dd 2080,2240,2400,2560,2720,2880,3040,3200,3360,3520,3680,3840
                    dd 4000,4160, 4320, 4480, 4640, 4800, 4960,5120,5280,5440,5600,5760,5920
                    dd 6080,6240,6400,6560,6720,6880,7040,7200,7360,7520,7680,7840

Basically the "WinFile" first 3 bytes are as follows byte 1 = how wide the box is (number of chars), byte 2 = how high the box is (number of chars down), byte 3 = forground & background color.
Once the box is draw, the marked part is draw by changing the forground & background over the maked area, but keeping the chars the same.

If you have any ?, or this is not what you meant, just ask away .

Heres a link to the char set   http://telecom.tbi.net/asc-ibm.html
me and bubach made a simple demo of how to change these unused chars
to make a logo, but you could just as easy design your own text boxs.
You can get it here:   http://www.dex4u.com/images/logo1.zip

Hope it helps.